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1. Alfalfa reference ET measurement and prediction

Author:
Evett, S.R.; Howell, T.A.; Todd, R.W.; Schneider, A.D.; Tolk, J.A.
Source:
National irrigation symposium: proceedings of the 4th Decennial Symposium : November 14-16, 2000, Phoenix, Arizona / edited by Robert G. Evans, Brian L. Benham, Todd P. Trooien pp. -
Subject:
evapotranspiration; solar radiation; equations; clay loam soils; Medicago sativa; semiarid zones; alfalfa; measurement; prediction; Texas
Datasets:
Weighing Lysimeter Data for The Bushland, Texas Alfalfa Datasets
Evapotranspiration, Irrigation, Dew/frost - Water Balance Data for The Bushland, Texas Alfalfa Datasets
Growth and Yield Data for the Bushland, Texas Alfalfa Datasets
The Bushland, Texas, Alfalfa Datasets
Handle:
10113/2357

2. Ammonia and gaseous nitrogen emissions from a commercial beef cattle feedyard estimated using the flux-gradient method and N:P ratio analysis

Author:
Todd, R.W.; Cole, N.A.; Harper, L.A.; Flesch, T.K.; Baek, B.H.
Source:
Proceedings, Symposium, State of the Science, Animal Manure and Waste Management : January 4-7, 2005, San Antonio, Texas / sponsored by: National Center for Manure and Animal Waste Management and Cooperative State Research Extension and Education Service (CSREES) Multi-State Committee, S-1000, Animal Manure and Waste Utilization, Treatment and Nuisance Avoidance for a Sustainable Agriculture pp. -
Subject:
estimation; ammonia; diet; chemiluminescence; feeds; winter; nitrogen; feedlots; body weight; air temperature; beef cattle; cattle manure; wind speed; summer; gas emissions; phosphorus; air pollution; Texas; High Plains (United States)
Abstract:
... Micrometeorological methods used to estimate emissions are advantageous because they are noninterfering and can integrate fluxes over large areas. They have not been routinely applied to beef cattle feedyards, where physical complexity and the possibility of disturbed air flow may be problematic. Our objective was to use the flux-gradient method to estimate NH3 emissions from beef cattle feedyard ...
Handle:
10113/16188

3. Application of remote sensing and spatial information technologies for detecting and mapping insect infestations

Author:
Everitt, J.H.; Escobar, D.E.; Davis, M.R.; Richerson, J.V.; Karges, J.P.
Source:
Natural resource management using remote sensing and GIS : proceedings of the Seventh Forest Service Remote Sensing Applications Conference, Nassau Bay, Texas, April 6-10, 1998 / Jerry Dean Greer, editor pp. -
Subject:
insect pests; Aleurocanthus woglumi; Pogonomyrmex barbatus; Dendroctonus brevicomis; pest monitoring; remote sensing; global positioning systems; geographic information systems; aerial photography; video cameras; rangelands; coniferous forests; Citrus; orchards; Texas
Handle:
10113/39953

4. Automatic drip irrigation of corn and soybean

Author:
Evett, S.R.; Howell, T.A.; Schneider, A.D.; Upchurch, D.R.; Wanjura, D.F.
Source:
National irrigation symposium: proceedings of the 4th Decennial Symposium : November 14-16, 2000, Phoenix, Arizona / edited by Robert G. Evans, Brian L. Benham, Todd P. Trooien pp. -
Subject:
Zea mays; Glycine max; canopy; water use efficiency; soybeans; corn; microirrigation; automation; grain yield; irrigated farming; temperature; Texas
Handle:
10113/4189

5. Canopy Temperature Based Automatic Irrigation Control

Author:
Evett, S.R.; Howell, T.A.; Schneider, A.D.; Upchurch, D.R.; Wanjura, D.F.
Source:
Evapotranspiration and irrigation scheduling : proceedings of the international conference, November 3-6, 1996, San Antonio Convention Center, San Antonio, Texas / editors, C.R. Camp, E.J. Sadler, and R.E. Yoder ; co-sponsors, the Irrigation Association, International Committee on Irrigation Drainage pp. -
Subject:
Zea mays; corn; irrigated farming; microirrigation; automation; canopy; temperature; water use efficiency; grain yield; Texas
Handle:
10113/1662

6. Chemical transport in agricultural runoff: model improvement and application

Author:
Sharpley, A.N.; Ahuja, L.R.; Smith, S.J.
Source:
Modeling agricultural, forest, and rangeland hydrology : proceedings of the 1988 International Symposium, December 12-13, 1988, Hyatt Regency Chicago, in Illinois Center, Chicago, Illinois pp. -
Subject:
water pollution; phosphorus fertilizers; nitrogen fertilizers; pesticides; runoff; watersheds; crops; fields; models; Oklahoma; Texas; Iowa
Handle:
10113/20212

7. Comparing SEBAL ET with lysimeter data in the semi-arid Texas High Plains

Author:
Gowda, Prasanna; Howell, T.A.; Chavez, J.L.; Copeland, K.S.; Paul, G.
Source:
World Environmental and Water Resources Congress 2008 : Ahupua'a : May 12-16, 2008, Honolulu, Hawai'i / sponsored by Environmental and Water Resources Institute (EWRI) of the American Society of Civil Engineers ; edited by Roger W. Babcock, Jr., Raymond Walton pp. -
Subject:
evapotranspiration; Landsat; remote sensing; algorithms; lysimeters; soil water content; data analysis; Texas
Abstract:
... Surface Energy Balance Algorithm for Land (SEBAL), a spatial evapotranspiration (ET) estimation method, has been applied with Landsat Thematic Mapper (TM) data throughout the world. However, it has never been tested for semiarid conditions of the Texas High Plains. In this study, SEBAL algorithm was applied to a Landsat TM image acquired on July 10, 2007 covering a major portion of the Texas High ...
Handle:
10113/37749
DOI:
10.1061/40976(316)96

8. Conversion between evapotranspiration references and methods

Author:
Wright, J.L.; Allen, R.G.; Howell, T.A.
Source:
National irrigation symposium: proceedings of the 4th Decennial Symposium : November 14-16, 2000, Phoenix, Arizona / edited by Robert G. Evans, Brian L. Benham, Todd P. Trooien pp. -
Subject:
Medicago sativa; alfalfa; grasses; evapotranspiration; equations; estimation; prediction; lysimeters; Idaho; Texas
Handle:
10113/2358

9. Cotton production potential and water conservation impact using the regional irrigation demand model of northern Texas

Author:
Marek, Thomas; Porter, Dana; Howell, Terry; Gowda, Prasanna; Colaizzi, Paul; Amosson, Steve; Bretz, Fran
Source:
World Environmental and Water Resources Congress 2008 : Ahupua'a : May 12-16, 2008, Honolulu, Hawaiʻi / sponsored by Environmental and Water Resources Institute (EWRI) of the American Society of Civil Engineers ; edited by Roger Babcock, Jr., Raymond Walton pp. -
Subject:
cotton; crop production; irrigation water; water conservation; water supply; Gossypium hirsutum; Texas
Abstract:
... Revised irrigation demands are calculated for the 21 northernmost counties in Texas, identified as Region A, using the TAMA (Texas A&M-Amarillo) agricultural water use demand estimation model. Year 2000 demands are presented using the existing mixture of crops, average evapotranspiration values and actual irrigation application practice values. Current demand values are expected to exceed the allo ...
Handle:
10113/37758
DOI:
10.1061/40976(316)105

10. Crop Coefficient Based Evapotranspiration Estimates Compared with Mechanistic Model Results

Author:
Evett, S.R.; Howell, T.A.; Schneider, A.D.; Tolk, J.A.
Source:
Water resources engineering : proceedings of the first international conference / sponsored by the Water Resources Engineering Division of the American Society of Civil Engineers, in cooperation with American Institute of Hydrology ... [et al.] : San Antonio, Texas, August 14-18, 1995 ; edited by William H. Espey, Jr. and Phil G. Combs pp. -
Subject:
estimation; evapotranspiration; leaf area index; mechanistic models; Triticum aestivum; crop coefficient; winter wheat; heat sums; Texas
Handle:
10113/1099

11. Crop emergence with alternative SDI designs in a Pullman clay loam soil

Author:
Colaizzi, P.D.; Evett, S.R.; Howell, T.A.
Source:
Proceedings of the 28th annual Southern Conservation Systems Conference improving conservation technologies to compete for global resources and markets : June 26, 27, and 28, 2006, Amarillo, Texas / edited by R.C. Schwartz, R.L. Baumhardt, and J.M. Bell pp. -
Subject:
Glycine max; row spacing; clay loam soils; subsurface irrigation; soybeans; microirrigation; spatial distribution; crop yield; irrigation rates; furrows; seedling emergence; Texas
Handle:
10113/2982

12. Crop production comparison under various irrigation systems

Author:
Colaizzi, P.D.; Lamm, F.R.; Howell, T.A.; Evett, S.R.
Source:
Proceedings for the 2006 Central Plains Irrigation Conference, Colby, Kansas, Feb 21-22 pp. -
Subject:
Helianthus annuus; subsurface irrigation; Gossypium hirsutum; grain yield; Triticum aestivum; Zea mays; Glycine max; corn; center pivot irrigation; irrigated farming; winter wheat; cotton; grain sorghum; soybeans; microirrigation; irrigation rates; Sorghum bicolor; Kansas; Texas
Handle:
10113/2980

13. Daily measurement and calculation of crop water use

Author:
Lascano, R.J.; Baumhardt, R.L.; Hicks, S.K.; Evett, S.R.; Heilman, J.L.
Source:
Evapotranspiration and irrigation scheduling : proceedings of the international conference, November 3-6, 1996, San Antonio Convention Center, San Antonio, Texas / editors, C.R. Camp, E.J. Sadler, and R.E. Yoder ; co-sponsors, the Irrigation Association, International Committee on Irrigation Drainage pp. -
Subject:
cotton; simulation models; evapotranspiration; surface irrigation; Gossypium hirsutum; microirrigation; transpiration; mechanistic models; irrigation scheduling; measurement; Texas
Handle:
10113/1654

14. Determining the optimum solar water pumping system for domestic use, livestock watering or irrigation

Author:
Vick, Brian D.; Clark, R. Nolan
Source:
Solar 2009 : Buffalo/Niagara, May 11-16, 2009 : proceedings of the 38th ASES National Solar Conference, proceedings of the 34th National Passive Solar Conference, proceedings of the 4th Annual Renewable Energy Policy, Advocacy and Marketing Conference / edited by R. Campbell-Howe pp. -
Subject:
solar energy; irrigation; equipment design; equipment performance; pumps; case studies; livestock feeding; wind power; Texas
Abstract:
... For several years we have field tested many different types of solar powered water pumping systems. In this paper, several steps are given to select a solar-PV water pumping system. The steps for selection of stand-alone water pumping system were: deciding whether a wind or solar water pumping system would be best, determining the type of PV module, how controller can affect the decision, selectin ...
Handle:
10113/46008

15. Ecoregion partitioning for AVHRR and Landsat TM regresion modeling

Author:
Cooke, Bill
Source:
Natural resource management using remote sensing and GIS : proceedings of the Seventh Forest Service Remote Sensing Applications Conference, Nassau Bay, Texas, April 6-10, 1998 / Jerry Dean Greer, editor pp. -
Subject:
thematic maps; regression analysis; vegetation cover; radiometers; forest ecosystems; remote sensing; Landsat; woody plants; forests; Oklahoma; Texas
Handle:
10113/41266

16. Effects of taller wheat residue after stripper header harvest on wind run, irradiant energy interception, and evaporation

Author:
Baumhardt, R.L.; Schwartz, R.C.; Todd, R.W.
Source:
Proceedings of the Southern Conservation Tillage Conference for Sustainable Agriculture 1978 to 2002 : 25 years pp. -
Subject:
agricultural soils; solar radiation; wind; crop residues; wheat; height; evaporation; Triticum aestivum; combine harvesters; soil water; Texas
Handle:
10113/2364

17. Estimations of ammonia and hydrogen sulfide fluxes from cattle feedlot surfaces in Texas High Plains

Author:
Baek, B.H.; Koziel, J.A.; Spinhirne, J.D.; Parker, D.B.; Cole, N.A.
Source:
Air pollution from agricultural operations III : proceedings of the third International Symposium, 12-15 October 2003, Raleigh, North Carolina pp. -
Subject:
water content; air pollution; air quality; ammonium nitrogen; hydrogen sulfide; gas emissions; cattle; feedlots; air temperature; cattle manure; pH; analytical methods; measuring devices; equipment design; Texas
Handle:
10113/16613

18. Evapotranspiration of Corn -- Southern High Plains

Author:
Howell, T.A.; Evett, S.R.; Tolk, J.A.; Schneider, A.D.; Steiner, J.L.
Source:
Evapotranspiration and irrigation scheduling : proceedings of the international conference, November 3-6, 1996, San Antonio Convention Center, San Antonio, Texas / editors, C.R. Camp, E.J. Sadler, and R.E. Yoder ; co-sponsors, the Irrigation Association, International Committee on Irrigation Drainage pp. -
Subject:
Zea mays; corn; irrigation; plant growth; dry matter accumulation; leaf area index; evapotranspiration; grain yield; seasonal variation; diurnal variation; water use efficiency; infiltration (hydrology); Texas
Handle:
10113/1663

19. Evapotranspiration of Corn and Forage Sorghum for Silage

Author:
Howell, T.A.; Evett, S.R.; Tolk, J.A.; Copeland, K.S.; Colaizzi, P.D.; Gowda, P.H.
Source:
World Environmental and Water Resources Congress 2008 : Ahupua'a : May 12-16, 2008, Honolulu, Hawai'i / sponsored by Environmental and Water Resources Institute (EWRI) of the American Society of Civil Engineers ; edited by Roger W. Babcock, Jr., Raymond Walton pp. -
Subject:
Zea mays; forage crops; evapotranspiration; soil water content; irrigation; grain sorghum; corn; lysimeters; crop yield; soil water; Sorghum bicolor; silage; Texas
Abstract:
... In the U.S. Southern High Plains, dairies have expanded and have increased the regional demand for forage and silage. The objectives were to measure water use and determine crop coefficients for corn (Zea mays L.) and forage sorghum (Sorghum bicolor (L.) Moench) produced for silage on the Southern High Plains. Water use was measured with large, precision weighing lysimeters in 2006 and 2007. Both ...
Handle:
10113/37756
DOI:
10.1061/40976(316)88

20. Flux-Gradient Estimates of Ammonia Emissions from Beef Cattle Feedyard Pens

Author:
Todd, R.W.; Cole, N.A.; Harper, L.A.; Flesch, T.K.
Source:
International Symposium on Air Quality and Waste Management for Agriculture : proceedings of the 16-19 September 2007 conference, Broomfield, Colorado pp. -
Subject:
estimation; ammonia; animal feeding operations; chemiluminescence; winter; nitrogen; air temperature; beef cattle; spring; wind speed; summer; gas emissions; ammonium nitrogen; Texas
Abstract:
... Concentrated animal feeding operations are major sources of ammonia emitted to the atmosphere. There is a considerable literature on ammonia emissions from poultry and swine, but few studies have investigated large, open lot beef cattle feedyards. We used the micrometeorological flux-gradient method to estimate ammonia emissions during six field campaigns in three seasons. Profiles of ammonia, win ...
Handle:
10113/46016

21. Hydrologic Instrumentation at the USDA-ARS Grassland, Soil and Water Research Laboratory, Riesel, TX

Author:
Harmel, R. Daren; Richardson, Clarence W.; King, Kevin W.; Arnold, Jeff G.
Source:
First Interagency Conference on Research in the Watersheds pp. -
Subject:
hydrologic data; measuring devices; Agricultural Research Service; pastures; data analysis; watershed hydrology; agricultural watersheds; Texas
Abstract:
... The USDA-ARS Grassland, Soil and WaterResearch Laboratory watershed facility near Riesel, TX, is one of the most intensively monitored hydrological research sites in the country. The 340 ha research site is currently divided into subwatersheds ranging from 0.1 to 125 ha under pasture and cropland management. Currently in operation are 18 runoff stations, 15 rain gauges, a weather station, a latera ...
Handle:
10113/45546

22. Influence of irrigation method, tillage, and crop residues on infiltration and interrill erosion on a Pullman soil

Author:
Howell, T.A.; Jones, O.R.; Reddell, D.L.; Schneider, A.D.
Source:
Clean water, clean environment, 21st century : team agriculture, working to protect water resources : conference proceedings, March 5-8, 1995, Kansas City, Missouri / [sponsored by Working Group on Water Quality, U.S. Department of Agriculture ; coordinated by ASAE, The Society for engineering in agricultural, food, and biological systems] pp. -
Subject:
interrill erosion; agricultural soils; ridge tillage; no-tillage; crop residue management; clay loam soils; agricultural runoff; crop residues; wheat; infiltration (hydrology); sprinkler irrigation; furrow irrigation; Triticum aestivum; Texas
Handle:
10113/1100

23. Irrigated fescue grass ET compared with calculated reference grass ET

Author:
Howell, T.A.; Evett, S.R.; Schneider, A.D.; Dusek, D.A.; Copeland, K.S.
Source:
National irrigation symposium: proceedings of the 4th Decennial Symposium : November 14-16, 2000, Phoenix, Arizona / edited by Robert G. Evans, Brian L. Benham, Todd P. Trooien pp. -
Subject:
estimation; grasses; mathematical models; evapotranspiration; Festuca arundinacea; irrigation; equations; lysimeters; crop coefficient; irrigated farming; Texas
Handle:
10113/2361

24. Irrigation Methods and Capacities for Cotton in the Northern High Plains

Author:
Colaizzi, P.D.; Evett, S.R.; Howell, T.A.
Source:
2004 High Plains groundwater resources : challenges and opportunities : conference proceedings December 7-9, 2004 Lubbock, TX, USA / editors, Ken A. Rainwater, Ted M. Zobeck pp. -
Subject:
lint cotton; Gossypium hirsutum; water use efficiency; subsurface irrigation; microirrigation; sprinkler irrigation; deficit irrigation; crop yield; irrigated farming; fiber quality; Texas
Handle:
10113/2365

25. Irrigation Scheduling Research And Its Impact on Water Use

Author:
Howell, T.A.
Source:
Evapotranspiration and irrigation scheduling : proceedings of the international conference, November 3-6, 1996, San Antonio Convention Center, San Antonio, Texas / editors, C.R. Camp, E.J. Sadler, and R.E. Yoder ; co-sponsors, the Irrigation Association, International Committee on Irrigation Drainage pp. -
Subject:
evapotranspiration; irrigation scheduling; agricultural runoff; transpiration; technology transfer; automation; evaporation; irrigated farming; drainage; Texas
Handle:
10113/1664

26. LEPA and spray irrigation in the Southern High Plains

Author:
Schneider, A.D.; Howell, T.A.
Source:
Water resources engineering : proceedings of the first international conference / sponsored by the Water Resources Engineering Division of the American Society of Civil Engineers, in cooperation with American Institute of Hydrology ... [et al.] : San Antonio, Texas, August 14-18, 1995 ; edited by William H. Espey, Jr. and Phil G. Combs pp. -
Subject:
sprinkler irrigation; irrigated farming; Zea mays; corn; Sorghum bicolor; grain sorghum; Triticum aestivum; wheat; grain yield; irrigation scheduling; irrigation rates; deficit irrigation; Texas
Handle:
10113/1133

27. LEPA irrigation developments

Author:
Schneider, A.D.; Buchleiter, G.; Kincaid, D.C.
Source:
National irrigation symposium: proceedings of the 4th Decennial Symposium : November 14-16, 2000, Phoenix, Arizona / edited by Robert G. Evans, Brian L. Benham, Todd P. Trooien pp. -
Subject:
water use efficiency; agricultural runoff; field crops; furrow irrigation; infiltration (hydrology); irrigated farming; grain yield; furrows; irrigation scheduling; sustainable agriculture; Texas
Handle:
10113/2360

28. Land Use Effects on Soil Hydraulic Properties

Author:
Schwartz, R.C.; Unger, P.W.; Evett, S.R.
Source:
ISTRO 2000 conference : proceedings of the 15th International Conference of the International Soil Tillage Research Organization, "ISTRO-2000" June 2000 / editor J.E. Morrison pp. -
Subject:
saturated hydraulic conductivity; Conservation Reserve Program; agricultural soils; soil pore system; unsaturated hydraulic conductivity; tillage; infiltration (hydrology); evaporation; grasslands; grassland soils; Texas
Abstract:
... Tillage alters the pore structure and hydraulic properties of soils. Likewise, reestablishment of grass on cropland will, over time, produce changes in soil hydraulic properties that can influence the amount of plant available water. We conducted a study to characterize and compare soil hydraulic properties on adjacent native grassland, cropland, and Conservation Reserve Program (CRP) sites at thr ...
Handle:
10113/45776

29. Landscape genetics of feral swine and implications for management

Author:
Delgado-Acevedo, J.; DeYoung, R.W.; Campbell, T.A.
Source:
Managing vertebrate invasive species : proceedings of an international symposium, Fort Collins, Colorado, August 7-9, 2007 / editors, Gary W. Witmer, William C. Pitt, and Kathleen A. Fagerstone pp. -
Subject:
swine; feral animals; invasive species; wildlife damage management; population genetics; population structure; microsatellite repeats; genetic variation; landscapes; Texas
Abstract:
... The management of the invasive feral pig (Sus scrofa) has been the subject of intense study in recent years. Feral pigs are also susceptible to diseases (e.g., brucellosis, pseudorabies) that can be transmitted to livestock, humans, and wildlife. Feral pigs clearly represent a threat to the sustainability of multiple agriculture products. Population reduction (trapping or shooting) is the best cur ...
Handle:
10113/17530

30. Measured and predicted evapotranspiration of grain sorghum grown with full and limited irrigation in three high plains soils

Author:
Tolk, J.A.; Howell, T.A.
Source:
National irrigation symposium: proceedings of the 4th Decennial Symposium : November 14-16, 2000, Phoenix, Arizona / edited by Robert G. Evans, Brian L. Benham, Todd P. Trooien pp. -
Subject:
mathematical models; agricultural soils; evapotranspiration; irrigation; equations; grain sorghum; lysimeters; model validation; crop coefficient; Sorghum bicolor; irrigated farming; Texas
Handle:
10113/2359

31. Prevention of ground and surface water contamination by new agricultural management systems

Author:
Sharpley, A.; Smith, S.J.; Daniel, J.A.
Source:
Clean water, clean environment, 21st century : team agriculture, working to protect water resources : conference proceedings, March 5-8, 1995, Kansas City, Missouri pp. -
Subject:
runoff; land application; subsurface flow; no-tillage; groundwater contamination; nitrogen; nitrate nitrogen; poultry manure; cover crops; potassium; soil fertility; phosphorus; ammonium nitrogen; Oklahoma; Texas; Arkansas
Handle:
10113/20488

32. Sediment-nutrient transport during severe storms

Author:
Smith, S.J.; Sharpley, A.N.; Williams, J.R.; Berg, W.A.; Coleman, G.A.
Source:
Proceedings of the Fifth Federal Interagency Sedimentation Conference, 1991 / edited by Shou-Shan Fan and Yung-Huang Kuo ; sponsored by Subcommittee on Sedimentation of the Interagency Advisory Committee on Water Data pp. -
Subject:
runoff; sediment deposition; storms; mathematical models; prediction; Modified Universal Soil Loss Equation; Oklahoma; Texas
Handle:
10113/20268

33. Soil hydraulic conductivity and retention curves from tension infiltrometer and laboratory data

Author:
Evett, S.R.; Peters, F.H.; Jones, O.R.; Unger, P.W.
Source:
Characterization and measurement of the hydraulic properties of unsaturated porous media : proceedings of the International Workshop on Characterization and Measurement of the Hydraulic Properties of Unsaturated Porous Media : Riverside, California, October 22-24, 1997 / edited by M. Th. van Genuchten and F.J. Leij, L. Wu pp. -
Subject:
saturated hydraulic conductivity; no-tillage; crop rotation; conventional tillage; long term experiments; soil water content; infiltrometers; grain sorghum; bulk density; infiltration (hydrology); wheat; fallow; Triticum aestivum; stubble mulching; Sorghum bicolor; soil water characteristic; Texas
Handle:
10113/3063

34. The Texas Imported Fire Ant Research and Management Plan: what is it and what does it include?

Author:
Vinson, S.B.; Drees, B.M.; Frisbie, R.E.
Source:
Proceedings of the 1997 Imported Fire Ant Research Conference April 14-16, 1997 Holiday Inn West, Gainesville, FL / compiled by D.P. Wojcik ; hosted by: USDA, ARS, CMAVE, Imported Fire Ant & Household Insects Research Unit pp. -
Subject:
Solenopsis invicta; insect control; fire ants; Texas
Handle:
10113/15917

35. Texas North Plains PET Network

Author:
Marek, T.; Howell, T.; New, L.; Bean, B.; Dusek, D.; Michels, G.J. Jr.
Source:
Evapotranspiration and irrigation scheduling : proceedings of the international conference, November 3-6, 1996, San Antonio Convention Center, San Antonio, Texas / editors, C.R. Camp, E.J. Sadler, and R.E. Yoder ; co-sponsors, the Irrigation Association, International Committee on Irrigation Drainage pp. -
Subject:
grasses; evapotranspiration; equations; developmental stages; data collection; field crops; lysimeters; automation; irrigation management; heat sums; Texas
Handle:
10113/1655

36. Using Rotor or Tip Speed in the Acoustical Analysis of Small Wind Turbines

Author:
Vick, Brian D.; Clark, R. Nolan
Source:
46th AIAA Aerospace Sciences Meeting & Exhibit : [7-10 January 2008, Reno, Nevada] pp. -
Subject:
wind power; acoustic properties; pumps; wind speed; equipment design; Texas
Abstract:
... Acoustical noise data have been collected and analyzed on small wind turbines used for water pumping at the USDA-ARS Conservation and Production Research Laboratory (CPRL) near Bushland, TX. This acoustical analysis differed from previous research in that the data were analyzed with rotor or tip speed being the independent variable in addition to analyzing the data with wind speed as the independe ...
Handle:
10113/43993

37. Water quality implications of playa lake containment of feedlot wastes

Author:
Sharpley, A.N.; Smith, S.J.; Daniel, J.A.; Jones, O.R.; Stewart, B.A.
Source:
Clean water, clean environment, 21st century : team agriculture, working to protect water resources : conference proceedings, March 5-8, 1995, Kansas City, Missouri pp. -
Subject:
waste disposal; runoff; storage; playa soils; lakes; nitrogen; phosphorus; inorganic salts; leaching; groundwater contamination; water quality; Texas
Handle:
10113/20487

38. Wind, water, and growing season: cropping system selection pressures in the southern Great Plains

Author:
Baumhardt, R. Louis
Source:
Dynamic cropping systems principles, processes, and challenges : proceedings / Northern Great Plains Research Laboratory ; [J.D. Hanson and J.M. Krupinsky, editors] pp. -
Subject:
crop production; tillage; cropping systems; growing season; wind speed; Oklahoma; Texas; Great Plains region
Handle:
10113/20651

39. A weighing lysimeter for developing countries

Author:
Schneider, A.D.; Howell, T.A.; Moustafa, A.T.A.; Evett, S.R.; Abou-Zeid, W.
Source:
Evapotranspiration and irrigation scheduling : proceedings of the international conference, November 3-6, 1996, San Antonio Convention Center, San Antonio, Texas / editors, C.R. Camp, E.J. Sadler, and R.E. Yoder ; co-sponsors, the Irrigation Association, International Committee on Irrigation Drainage pp. -
Subject:
grasses; evapotranspiration; equations; Medicago sativa; field crops; lysimeters; alfalfa; equipment design; crop coefficient; measurement; grassland soils; Egypt; Texas
Handle:
10113/1661

40. Moisture relation of Texas soils

Author:
Fraps, G.S.
Source:
Agronomy journal 1915 v.7 no.1 pp. 31-33
ISSN:
0002-1962
Subject:
animal manures; tillage; soil water content; soil types; potassium fertilizers; Texas
DOI:
10.2134/agronj1915.00021962000700010006x

41. Relation of chemical composition to soil fertility

Author:
Fraps, G.S.
Source:
Agronomy journal 1915 v.7 no.1 pp. 33-36
ISSN:
0002-1962
Subject:
soil fertility; nitrogen fertilizers; phosphoric acid; potassium fertilizers; physicochemical properties; soil analysis; Zea mays; Texas
DOI:
10.2134/agronj1915.00021962000700010007x

42. The composition of grain sorghum kernels

Author:
Le Clerc, J.A.; Bailey, L.H.
Source:
Agronomy journal 1917 v.9 no.1 pp. 1-16
ISSN:
0002-1962
Subject:
Sorghum (Poaceae); seeds; agronomic traits; crop yield; nutritive value; protein content; ash content; chemical constituents of plants; breads; Texas
Abstract:
... The minimum and maximum results obtained and the average composition found in analyses of several hundred samples of grain sorghums grown at Amarillo, Tex., from 1908 to 1912, are given. The results have been arranged in tabular form so as to bring out the correlations between the percentage of protein and the weight per 1,000 kernels; and also to show how the composition of grain varies with (1) ...
DOI:
10.2134/agronj1917.00021962000900010001x

43. Natural cross-pollination in milo

Author:
Karper, R.E.; Conner, A.B.
Source:
Agronomy journal 1919 v.11 no.6 pp. 257-259
ISSN:
0002-1962
Subject:
hybrids; progeny; Sorghum bicolor; cross pollination; Texas
DOI:
10.2134/agronj1919.00021962001100060007x

44. Correlation of characters in Texas cotton

Author:
Dunlavy, H.
Source:
Agronomy journal 1923 v.15 no.11 pp. 444-448
ISSN:
0002-1962
Subject:
Gossypium hirsutum; variety trials; statistical analysis; Texas
DOI:
10.2134/agronj1923.00021962001500110004x

45. The inheritance of seed coat color in certain crosses in grain sorghum

Author:
Conner, A.B.; Karper, R.E.
Source:
Agronomy journal 1923 v.15 no.8 pp. 338-344
ISSN:
0002-1962
Subject:
Sorghum bicolor; hybrids; color; testa; inheritance (genetics); Texas
DOI:
10.2134/agronj1923.00021962001500080005x

46. The Texas Station plan of cooperative distribution of pedigreed cotton seed

Author:
Stroman, G.N.; Killough, D.T.
Source:
Agronomy journal 1924 v.16 no.2 pp. 127-130
ISSN:
0002-1962
Subject:
cottonseed; Gossypium; inbred lines; purity; variety trials; community development; Texas
DOI:
10.2134/agronj1924.00021962001600020007x

47. Time and rate of blooming in rice

Author:
Laude, H.H.; Stansel, R.H.
Source:
Agronomy journal 1927 v.19 no.9 pp. 781-787
ISSN:
0002-1962
Subject:
Oryza sativa; variety trials; inflorescences; duration; Texas
Abstract:
... In a study of the inflorescence of rice grown on Substation No. 4 of the Texas Agricultural Experiment Station observations were made on 45 panicles, including 7,902 florets and representing six varieties or selections. No blooming occurred before 8:00 a.m. and none after 4:00 p.m. The maximum number bloomed between 11:00 a.m. and 12:00 noon. The majority of the rice panicles completed blooming in ...
DOI:
10.2134/agronj1927.00021962001900090002x

48. Varietal and seasonal variation of "motes" in upland cotton

Author:
Rea, H.E.
Source:
Agronomy journal 1929 v.21 no.4 pp. 481-486
ISSN:
0002-1962
Subject:
Gossypium hirsutum; abnormal development; seasonal variation; cultivars; Texas
Abstract:
... The results of the study on the percentage of the motes made in 16 varieties grown in 1925 and 1926 justify the following conclusions: 1. The occurrence of motes in the commercial varieties of cotton studied was very common. In a study embracing two years, 1,323 plants were examined and only 2 failed to have any motes. 2. The percentage of motes occurring in the commercial varieties of cotton stud ...
DOI:
10.2134/agronj1929.00021962002100040013x

49. The influence of "motes" on the yield and boll-size of the cotton plant

Author:
Rea, H.E.
Source:
Agronomy journal 1929 v.21 no.12 pp. 1154-1155
ISSN:
0002-1962
Subject:
ovules; Gossypium hirsutum; varieties; crop yield; abnormal development; genetic variation; bolls; Texas
DOI:
10.2134/agronj1929.00021962002100120003x

50. The necessity for soil conservation

Author:
Short, A.K.
Source:
Agronomy journal 1929 v.21 no.4 pp. 433-438
ISSN:
0002-1962
Subject:
soil erosion; soil conservation; terracing; Texas
DOI:
10.2134/agronj1929.00021962002100040009x

51. The results and significance of the spur (Texas) run-off and erosion experiments

Author:
Dickson, R.E.
Source:
Agronomy journal 1929 v.21 no.4 pp. 415-422
ISSN:
0002-1962
Subject:
erosion control; soil erosion; runoff; Texas
Abstract:
... There are probably 50 million acres of land in Texas from which there should be no water lost as run-off. With a better understanding of the nature and character of the rainfall and with the development of practical methods of holding the water on the land where it falls, there will be more permanently anchored acres and the risk element crop farming will have been materially reduced. ...
DOI:
10.2134/agronj1929.00021962002100040006x

52. The accuracy of cotton line percentage figures

Author:
Quinby, J.R.; Stephens, J.C.
Source:
Agronomy journal 1930 v.22 no.2 pp. 157-163
ISSN:
0002-1962
Subject:
variety trials; lint cotton; equations; crop yield; Texas
Abstract:
... When cotton is ginned in an experimental gin, it is necessary to get a representative sample of the entire plat production of seed cotton or a composite sample of amounts in exact proportion to the yields of each picking if accurate figures for percentage of lint, and consequently for acre yield, are to be obtained. The two gins which were used, one an 8-saw and the other a 20-saw, ginned random s ...
DOI:
10.2134/agronj1930.00021962002200020006x

53. Some characteristics of an eroded soil

Author:
Musgrave, G.W.; Dunlavy, H.
Source:
Agronomy journal 1931 v.23 no.4 pp. 245-252
ISSN:
0002-1962
Subject:
eroded soils; soil profiles; Texas
Abstract:
... The practice of continuously growing cotton in the black belt of Texas is often followed by soil erosion, which, in turn, is accompanied by decreased yields. Observations indicate that even a relatively slight degree of erosion has a marked effect upon the yield. A study of a specific case has been made, using an area having a slight slope and a relatively slight degree of erosion extending in one ...
DOI:
10.2134/agronj1931.00021962002300040001x

54. The influence of date of planting cotton on the development of root-rot

Author:
Dana, B.F.; Rea, H.E.; Dunlavy, H.
Source:
Agronomy journal 1932 v.24 no.5 pp. 367-377
ISSN:
0002-1962
Subject:
Gossypium hirsutum; Phymatotrichopsis omnivora; clay soils; planting date; rain; mortality; root rot; varietal resistance; Texas
Abstract:
... Six varieties of cotton representing early, medium, and late varieties were planted in 1928 on seven dates and in 1929 on four different dates. In 1930, three of these varieties were planted on three different dates. The Houston soils on which the plats were placed are very favorable to the root-rot as shown by the amount of disease found in crops preceding 1928 and the abundance of disease in the ...
DOI:
10.2134/agronj1932.00021962002400050005x

55. Soil rebuilding at the Red Plains Erosion Station

Author:
Phillips, S.W.
Source:
Agronomy journal 1933 v.25 no.5 pp. 346-350
ISSN:
0002-1962
Subject:
Gossypium hirsutum; erosion control; crop yield; soil erosion; sandy loam soils; Oklahoma; Texas
Abstract:
... The investigations fall under three major groups, as follows: (1) Fundamental studies of erosion and run-off rates, fertility losses, and the processes involved, under various condition of slope and cropping and tillage practice; (2) experimentation with various vegetative and artificial means of erosion control; and (3) soil rebuilding after depletion by erosion. Under the first head the effects ...
DOI:
10.2134/agronj1933.00021962002500050006x

56. The effect of fertilizers and rainfall on the length of cotton fiber

Author:
Reynolds, E.B.; Killough, D.T.
Source:
Agronomy journal 1933 v.25 no.11 pp. 756-764
ISSN:
0002-1962
Subject:
animal manures; Gossypium hirsutum; length; lint cotton; nitrogen fertilizers; potassium fertilizers; phosphorus fertilizers; rain; sandy loam soils; tillage; seasons; Texas
Abstract:
... When the average results for the 3 years on the Lufkin fine sandy loam soil are considered, there did not appear to be any significant correlation between the percentage of nitrogen, phosphoric acid, or potash and the length of cotton fiber. However, there was a slight tendency for the potash to reduce the length of fiber. Nitrogen and potash had no appreciable effect on the length of fiber on the ...
DOI:
10.2134/agronj1933.00021962002500110004x

57. The effect of tillage on eradication of cotton root rot

Author:
Rea, H.E.
Source:
Agronomy journal 1933 v.25 no.11 pp. 764-771
ISSN:
0002-1962
Subject:
Ipomoea; Gossypium hirsutum; Phymatotrichopsis omnivora; host plants; tillage; sclerotia; disease control; Physalis; incidence; root rot; perennial weeds; Texas
Abstract:
... Several tillage treatments, including listing at weekly intervals during the winter, during the summer, for 12 months, and for 24 months, were used at a number of points in the Blackland Prairie region of Texas in an effort to control the root-rot disease of cotton. The following conclusions are drawn from the results of these studies: 1. The stand of host plants of the root-rot disease was reduce ...
DOI:
10.2134/agronj1933.00021962002500110005x

58. Effect of fertilizers on the yield of cotton and on the control of the root-rot disease of cotton on the Blackland Prairie soils of Texas

Author:
Reynolds, E.B.; Rea, H.E.
Source:
Agronomy journal 1934 v.26 no.4 pp. 313-318
ISSN:
0002-1962
Subject:
Gossypium hirsutum; Phymatotrichopsis omnivora; crop yield; compound fertilizers; clay soils; profitability; disease control; plant diseases and disorders; Texas
Abstract:
... Eighty-five cooperative fertilizer experiments on cotton were conducted with farmers on the soils in the Blackland Prairie of Texas in 1930, 1931, and 1932, to determine the effect of fertilizers on the yield of cotton and on the control of the root-rot disease of cotton. In these experiments the 4-8-4, 4-8-0, and 6-12-0 fertilizers produced significant increases in yield of cotton, but the increa ...
DOI:
10.2134/agronj1934.00021962002600040009x

59. Size, shape, and replication of plats for field experiments with cotton

Author:
Reynolds, E.B.; Killough, D.T.; Vantine, J.T.
Source:
Agronomy journal 1934 v.26 no.9 pp. 725-734
ISSN:
0002-1962
Subject:
Gossypium hirsutum; crop yield; lint cotton; dimensions; land productivity; analysis of variance; Texas
Abstract:
... A blank experiment was conducted at College Station, Texas, in 1931, and at Chillicothe, Texas, in 1932, to determine the proper size, shape, and number of replications of plats for field experiments with cotton. Analysis of variance was used in making a statistical analysis of the data. The results obtained indicate that the research worker has a considerable range in selecting size and replicati ...
DOI:
10.2134/agronj1934.00021962002600090003x

60. Effect of fertilizers on the length of cotton fiber

Author:
Reynolds, E.B.; Stansel, R.H.
Source:
Agronomy journal 1935 v.27 no.5 pp. 408-411
ISSN:
0002-1962
Subject:
Gossypium; plant fibers; fertilizers; phosphoric acid; Texas
Abstract:
... In previous work to determine the effect of fertilizers on length of fiber, the application of phosphoric acid to cotton on a soil that responds readily to phosphoric acid apparently increased the length of fiber. An experiment using 10 different fertilizers was conducted in 1933 on Lake Charles clay soil, which is low in phosphoric acid, to study the matter further. Some significant differences i ...
DOI:
10.2134/agronj1935.00021962002700050012x

61. Inheritance of earliness and length of kernel in rice

Author:
Jones, J.W.; Adair, C.R.; Beachell, H.M.; Davis, L.L.
Source:
Agronomy journal 1935 v.27 no.11 pp. 910-921
ISSN:
0002-1962
Subject:
seeds; Oryza sativa; early development; crossing; humidity; length; temperature; inheritance (genetics); Texas; Arkansas; California
Abstract:
... The segregation in F2 for date of first heading in the crosses Bozu X Edith and Bozu X Blue Rose appeared to be controlled by multiple genetic factors; in the cross Colusa X Edith mainly by complete genetic factors indicating a 9 late to 7 early ratio; and in the cross Colusa X Blue Rose largely by one main genetic factor giving about 3 late to 1 early plant. In the F2 populations of the crosses B ...
DOI:
10.2134/agronj1935.00021962002700110007x

62. Carbohydrate content of cotton plants at different growth periods and the influence of fertilizers

Author:
Ergle, D.R.
Source:
Agronomy journal 1936 v.28 no.10 pp. 775-786
ISSN:
0002-1962
Subject:
monosaccharides; Gossypium hirsutum; clay loam soils; crop yield; NPK fertilizers; polysaccharides; roots; bolls; shoots; Texas
Abstract:
... The data show that the total sugars, representing the soluble carbohydrates, decreased in concentration in the plant tops between the stages of seedling and square formation, after which the trend in concentration was upward and increased rapidly during active boll formation, the rate of increase diminishing as the bolls approached maturity. At maturity, when the cotton bolls began opening, the to ...
DOI:
10.2134/agronj1936.00021962002800100001x

63. Cotton root-rot and weeds in native hay meadows of central Texas

Author:
Rogers, C.H.
Source:
Agronomy journal 1936 v.28 no.10 pp. 820-823
ISSN:
0002-1962
Subject:
viability; grasses; Gossypium hirsutum; Phymatotrichopsis omnivora; sclerotia; fungal diseases of plants; soil depth; root rot; disease control; weeds; prairies; Texas
Abstract:
... The root-rot fungus Phymatotrichum omnivorum has repeatedly been found infecting and killing plants in undisturbed Texas blackland prairies. Sclerotia, the carry-over stage of the root-rot fungus, of extremely high viability were found at 1-, 2-, and 3-foot depths in the soil in an undisturbed meadow. Of a total of 47 plant species present in the meadow, 37 were susceptible to a greater or lesser ...
DOI:
10.2134/agronj1936.00021962002800100006x

64. Cotton varieties recognized as standard commercial varieties

Author:
Brown, H.B.
Source:
Agronomy journal 1936 v.28 no.1 pp. 69-79
ISSN:
0002-1962
Subject:
lint cotton; Gossypium hirsutum; drought tolerance; early development; agronomic traits; disease resistance; high-yielding varieties; fiber quality; bolls; Oklahoma; Texas; South Carolina; Alabama; Georgia; Mississippi
Abstract:
... Below are brief descriptions of cotton varieties recognized by the American Society of Agronomy and the Agronomists of the Association of Southern Agricultural Workers as standard commercial varieties. ...
DOI:
10.2134/agronj1936.00021962002800010010x

65. Reaction of sorghums to the root, crown, and shoot rot of milo

Author:
Wagner, F.A.
Source:
Agronomy journal 1936 v.28 no.8 pp. 643-654
ISSN:
0002-1962
Subject:
Sorghum (Poaceae); Pythium; disease course; wilting; growth retardation; roots; shoots; economic analysis; cultural control; provenance; varieties; variety trials; disease resistance; root rot; discoloration; varietal resistance; Kansas; Texas
Abstract:
... A disease known as the root, crown, and shoot rot of milo is described and reported as occurring in Kansas, Texas, New Mexico, and possibly California and Oklahoma. The disease cannot be controlled by any of the ordinary methods of cultivation or rotation or by changing the time of planting the crop. Studies on varietal susceptibility in the milo disease nursery at Garden City, Kan., have proved t ...
DOI:
10.2134/agronj1936.00021962002800080006x

66. Competition between cotton varieties in adjacent rows

Author:
Quinby, J.R.; Killough, D.T.; Stansel, R.H.
Source:
Agronomy journal 1937 v.29 no.4 pp. 269-279
ISSN:
0002-1962
Subject:
Gossypium; variety trials; plant competition; row spacing; field experimentation; Texas
Abstract:
... The results of studies at three Texas stations indicate that, as a general rule, cotton varieties grown in variety tests in Texas do not differ in ability to compete for moisture and plant food. It is desirable, therefore, to use single-row plats and to use the land saved in so doing for additional replications. Although differences in competing ability were not found, they may conceivably exist, ...
DOI:
10.2134/agronj1937.00021962002900040002x

67. Germination of seeds from certain species of Paspalum

Author:
Ray, C.B.; Stewart, R.T.
Source:
Agronomy journal 1937 v.29 no.7 pp. 548-554
ISSN:
0002-1962
Subject:
seed germination; Paspalum dilatatum; temperature; Texas
DOI:
10.2134/agronj1937.00021962002900070004x

68. Male sterility in sorghum: its possible utilization in production of hybrid seed

Author:
Stephens, J.C.
Source:
Agronomy journal 1937 v.29 no.8 pp. 690
ISSN:
0002-1962
Subject:
hybridization; inheritance (genetics); Sorghum (Poaceae); Texas
Abstract:
... A male sterile plant of Texas Blackhull kafir was discovered in a plat of the sorghum variety test at Texas Substation No. 12, Chillicothe, Texas, in 1935. In the F2 generation of hybrids with this plant the progeny segregated into classes of approximately 3 normal plants to 1 male sterile plant. Studies of hybrid vigor in sorghum, particularly those of Karper and Quinby, show that the yields from ...
DOI:
10.2134/agronj1937.00021962002900080009x

69. The effect of three- and four-year rotations on cotton root-rot in the Central Texas Blacklands

Author:
Rogers, C.H.
Source:
Agronomy journal 1937 v.29 no.8 pp. 668-680
ISSN:
0002-1962
Subject:
Zea mays; Gossypium hirsutum; Phymatotrichopsis omnivora; fallow; root rot; Avena sativa; crop rotation; Sorghum (Poaceae); Texas
Abstract:
... Three-year rotation combinations of corn, oats, sorghum, or fallow with cotton were not effective in reducing cotton root-rot caused by the fungus Phymatotrichum omnivorum (Shear) Duggar during the period 1928-36 in the Houston soils at the Blackland Substation, Temple, Texas. Four-year rotations of cotton with the nonsusceptible crops corn, sorghum, and small grain (oats or wheat) showed a consis ...
DOI:
10.2134/agronj1937.00021962002900080007x

70. Bunt reaction of some varieties of hard red winter wheat

Author:
Rodenhiser, H.A.; Quisenberry, K.S.
Source:
Agronomy journal 1938 v.30 no.6 pp. 484-492
ISSN:
0002-1962
Subject:
Triticum aestivum; varieties; strains; hybrids; Tilletia laevis; Tilletia tritici; provenance; variety trials; varietal resistance; Texas; Oklahoma; Kansas; Colorado; Nebraska; Minnesota; Montana; Utah; West Virginia
Abstract:
... Bunt nurseries of hard red winter wheat were grown for 1 to 6 years at 10 experiment stations in the Great Plains states and at Kearneysville, W. Va., St. Paul, Minn., and Logan, Utah. Each nursery contained 50 varieties and strains of winter wheat grown in duplicate rows. The inoculum used was a composite of collections of T. levis and T. tritici obtained from fields selected at random throughout ...
DOI:
10.2134/agronj1938.00021962003000060005x

71. Row spacing and rate of seeding for rice nursery plats

Author:
Jodon, N.E.; Beachell, H.M.
Source:
Agronomy journal 1938 v.30 no.3 pp. 212-219
ISSN:
0002-1962
Subject:
Oryza sativa; crop yield; varieties; variety trials; row spacing; variance; Louisiana; Texas
Abstract:
... Among nursery plants of approximately the same area, increasing the number of rows per plat, with a concomitant increase in the proportion of the plat harvested, increased the yields of rice and reduced the variability somewhat in experiments at Crowley, La., but had no significant effect at Beaumont, Texas. Highly significant varietal differences were found at both stations by the analysis of var ...
DOI:
10.2134/agronj1938.00021962003000030006x

72. The relation of fertilizers to the cotton plant produced in the Blackland prairie section of Texas

Author:
Jordan, H.V.; Hunter, J.H.; Adams, J.E.
Source:
Agronomy journal 1938 v.30 no.3 pp. 254-262
ISSN:
0002-1962
Subject:
plant development; clay soils; nitrogen; Gossypium hirsutum; Phymatotrichopsis omnivora; loam soils; plant characteristics; disease control; height; crop yield; phosphates; NPK fertilizers; root rot; bolls; Texas
Abstract:
... Cotton was grown on Wilson clay loam, Wilson fine and Houston black clay soils, using fertilizers of 0-15-0, 3-9-3, 9-3-3, and 15-0-0 analyses. Periodic records were made of the numbers of plants killed by root-rot, of the height, and numbers of squares a bolls. Under the conditions of the experiment, an analysis of variance for four fields located on the Wilson soil showed that the 15-0-0 and 9-3 ...
DOI:
10.2134/agronj1938.00021962003000030010x

73. The Relation of Nitrogen, Phosphoric Acid, and Lime in the Soils of East Texas to Those Constituents in Bermuda and Little Bluestem Grasses

Author:
J. F. Fudge; G. S. Fraps
Source:
Soil Science Society of America journal 1939 v.3 no.C pp. 189-194
ISSN:
0361-5995
Subject:
Schizachyrium scoparium; forage; grasses; nitrogen; nitrogen content; phosphoric acid; soil; Bermuda; Texas
Abstract:
... SummaryA study was made of the relations between the protein, phosphoric acid, and lime contents of forty-nine samples of Bermuda and sixty-one samples each of young and mature bluestem and the nitrogen, active phosphoric acid, and active lime in the soils on which they grew. Coefficients of correlation between the composition of the plant and that of the soil were calculated. In Bermuda, a signif ...
DOI:
10.2136/sssaj1939.036159950003000C0041x

74. Comparative yields of transplanted and direct sown rice

Author:
Adair, C.R.; Beachell, H.M.; Jodon, N.E.; Davis, L.L.; Jones, J.W.
Source:
Agronomy journal 1942 v.34 no.2 pp. 129-137
ISSN:
0002-1962
Subject:
Oryza sativa; crop yield; sowing; varieties; variety trials; planting; California; Arkansas; Louisiana; Texas
Abstract:
... The varieties Caloro, Early Prolific, and Arkansas Fortuna rice were grown at the Arkansas, Louisiana, and Texas rice experiment stations, and Caloro and Early Prolific were grown at the Biggs, Calif., Rice Field Station during the 3-year period of 1937 to 1939 to compare the yields from plots direct seeded and transplanted. The average yields of Caloro for the 3-year period from direct seeding we ...
DOI:
10.2134/agronj1942.00021962003400020004x

75. Field studies of smut resistance in oats

Author:
Stanton, T.R.; Murphy, H.C.
Source:
Agronomy journal 1942 v.34 no.3 pp. 248-258
ISSN:
0002-1962
Subject:
variety trials; crossing; fungal diseases of plants; varieties; disease resistance; Avena nuda; Ustilago segetum var. avenae; Avena sativa; Iowa; Nebraska; Wisconsin; California; Kansas; Indiana; North Dakota; Idaho; Texas; Virginia; Minnesota; New York; Georgia; North Carolina
Abstract:
... Uniform tests of oats for smut resistance were conducted for 5 years at 9 to 15 stations each year. Local collections of smut were used at each station. The Canadian and Gothland check varieties showed high infection to nearly all collections of smut, averaging 73.86% and 36.92%, respectively. Comparable smut percentages for the other check varieties, Richland, Monarch, Black Mesdag, Fulghum, and ...
DOI:
10.2134/agronj1942.00021962003400030006x

76. Fluctuations in losses from milo disease on grain sorghums at Chillicothe, Texas, 1938-1947

Author:
Stevens, N.E.
Source:
Agronomy journal 1949 v.41 no.8 pp. 394
ISSN:
0002-1962
Subject:
Sorghum (Poaceae); crop yield; Periconia circinata; fungal diseases of plants; varietal resistance; Texas
DOI:
10.2134/agronj1949.00021962004100080014x

77. The effect of milo disease on grain and forage yields of sorghum

Author:
Quinby, J.R.; Karper, R.E.
Source:
Agronomy journal 1949 v.41 no.3 pp. 118-122
ISSN:
0002-1962
Subject:
Sorghum bicolor; Periconia circinata; crop yield; forage; disease resistance; roots; Texas
Abstract:
... Milo disease, caused by Periconia circinata (Mang.) Sacc., a malady of sorghum that kills the roots of susceptible varieties, has been present in the United States for about 20 years. The disease suddenly became widespread during the drought years of the 1930's and resistant strains were quickly found, increased, and distributed. Yield trials for 10 years at the Texas Agricultural Experiment Stati ...
DOI:
10.2134/agronj1949.00021962004100030005x

78. Brush control and pasture development in the Red Plains

Author:
Elwell, H.M.; Daniel, H.A.; Cox, M.B.
Source:
Agronomy journal 1950 v.42 no.8 pp. 390-394
ISSN:
0002-1962
Subject:
shrublands; brush control; chemical control; herbicides; trees; application methods; land restoration; grasses; Oklahoma; Texas
DOI:
10.2134/agronj1950.00021962004200080005x

79. The effects of time and method of pollination on seed set in American Upland cotton

Author:
Loden, H.D.; Lewis, C.F.; Richmond, T.R.
Source:
Agronomy journal 1950 v.42 no.11 pp. 560-564
ISSN:
0002-1962
Subject:
Gossypium hirsutum; pollination; methodology; cottonseed; crop yield; Texas
Abstract:
... An experiment was conducted in 1949 to determine the effect of time and method of pollination on seed set in American Upland cotton. The results may be summarized as follows: 1. Pollination of emasculated flowers before normal receptivity of the stigma was unsatisfactory for the production of crossed seed. 2. No significant differences were found in number of bolls set for any method of pollinatio ...
DOI:
10.2134/agronj1950.00021962004200110007x

80. The Effect of Conservation Practices on Runoff, Available Soil Moisture and Cotton Yield

Author:
Earl Burnett; C. E. Fisher
Source:
Soil Science Society of America journal 1954 v.18 no.2 pp. 216-218
ISSN:
0361-5995
Subject:
conservation practices; crop yield; evaporation; lint cotton; runoff; soil water; terraces; terracing; weeds; Texas
Abstract:
... The mechanical conservation practices of contouring and terracing have produced significant differences in runoff, available soil moisture, and cotton yield in a 26-year experiment at Spur, Tex. The increased cotton yield may be attributed primarily to reduction or elimination of runoff with attendant deeper penetration of moisture which resulted in reduction of moisture losses by evaporation and ...
DOI:
10.2136/sssaj1954.03615995001800020026x

81. The Influence of Soil Properties on the Effectiveness of Synthetic Soil Conditioners

Author:
W. Derby Laws
Source:
Soil Science Society of America journal 1954 v.18 no.4 pp. 378-381
ISSN:
0361-5995
Subject:
acid soils; calcium carbonate; clay; clay fraction; clay loam soils; clay soils; colloids; oxidation; sandy loam soils; soil conditioners; soil organic matter; soil pH; soil texture; Texas
Abstract:
... The influence of soil organic matter, soil acidity, free calcium carbonate, soil texture, type of clay mineral, and destruction and re-forming of stabilized aggregates on the effectiveness of the soil conditioners was studied. Wet-sieve aggregation data were expressed as mean weight-diameter and the effectiveness of the conditioner was obtained by subtracting the mean weight-diameter of the untrea ...
DOI:
10.2136/sssaj1954.03615995001800040007x

82. Seasonal Fluctuations in Soil Structure and Erodibility of Soil by Wind

Author:
W. S. Chepil
Source:
Soil Science Society of America journal 1954 v.18 no.1 pp. 13-16
ISSN:
0361-5995
Subject:
clods; erodibility; frost; prairie soils; seasonal variation; soil separates; soil structure; soil texture; spring; summer; water stable soil aggregates; wind; winter; Kansas; Texas
Abstract:
... The objective of this investigation was to elucidate the effects of seasons on soil structure and erodibility by wind. Little change in soil structure and erodibility occurred during a mild, dry winter near Lubbock, Tex., in 1952–53, but considerable change occurred during several consecutive winters in some areas of the Prairie soil zone of Kansas where the soils were usually moist. Under moist c ...
DOI:
10.2136/sssaj1954.03615995001800010004x

83. Observations on Certain Fluorescent Spots in Raw Cotton Associated with the Growth of Microorganisms

Author:
P.B. Marsh; K. Bollenbacher; J.P. San Antonio; G.V. Merola
Source:
Textile research journal 1955 v.25 no.12 pp. 1007-1016
ISSN:
0040-5175
Subject:
Alternaria; Aspergillus flavus; chromatography; fabrics; fluorescence; fluorescent substances; fungi; lint cotton; microbial growth; spectral analysis; textile fibers; ultraviolet radiation; Arizona; Texas
Abstract:
... Evidence is presented which indicates that certain fluorescent spots observed in raw cotton under ultraviolet light are associated with the prior growth of microorganisms on the fiber. A striking and characteristic type of spot which fluoresces bright greenish- yellow was noted frequently in classers' samples from the 1954 cotton crop grown around Yuma, Arizona, and Brownsville, Texas. It was also ...
DOI:
10.1177/004051755502501206

84. Effect of Nitrogen Fertilization on Yield and Protein Content of Grain Sorghum in the Lower Rio Grande Valley of Texas

Author:
C. A. Burleson; W. R. Cowley; G. Otey
Source:
Agronomy journal 1956 v.48 no.11 pp. 524-525
ISSN:
0002-1962
Subject:
agronomy; field experimentation; forage; grain sorghum; nitrogen; protein content; Texas
Abstract:
... SynopsisIn a field experiment with grain sorghum, applications of 60 and 120 pounds per acre of nitrogen gave significant increases in both content and yield of protein in the grain and forage. Apparent nitrogen recovery was 83.2 and 89.6%, respectively, when 60 and 120 pounds of nitrogen per acre were applied. ...
DOI:
10.2134/agronj1956.00021962004800110012x

85. Factors Influencing Swelling and Shrinking in Soils

Author:
S. E. Davidson; J. B. Page
Source:
Soil Science Society of America journal 1956 v.20 no.3 pp. 320-324
ISSN:
0361-5995
Subject:
adsorption; clay; clods; exchangeable cations; iron; organic compounds; organic matter; plant growth; shrinkage; soil conditioners; soil structure; swelling (materials); Texas
Abstract:
... The mechanism of the swelling process and its influence on soil structure and plant growth is critically evaluated. The tendency of a soil to swell in relation to mineralogical composition, adsorbed organic compounds, exchangeable cations, and iron content is discussed. A description is given of the apparatus developed to measure the swelling pressure of extracted soil clays. A comparison is made ...
DOI:
10.2136/sssaj1956.03615995002000030007x

86. Houston Black Clay, the Type Grumusol: II. Mineralogical and Chemical Characterization

Author:
G. W. Kunze; E. H. Templin
Source:
Soil Science Society of America journal 1956 v.20 no.1 pp. 91-96
ISSN:
0361-5995
Subject:
C horizons; X-ray diffraction; calcite; calcium carbonate; clay; clay fraction; differential thermal analysis; ethylene glycol; leaching; montmorillonite; organic matter; pH; particle size distribution; quartz; silt; silt fraction; weathering; Texas
Abstract:
... The following analyses are reported on each of the several horizons of five profiles of typical Houston Black clay from widely separated sites in Texas described in Part I: particle size distribution, organic matter, calcium carbonate equivalent, exchange capacity, ethylene glycol retention and pH. In addition X-ray diffraction analyses are reported for the following fractions: silt (0.05 to 0.002 ...
DOI:
10.2136/sssaj1956.03615995002000010023x

87. Interactions of Cytoplasm and Genes in a Group of Male Sterile Corn Types

Author:
L. W. Briggle
Source:
Agronomy journal 1957 v.49 no.10 pp. 543-547
ISSN:
0002-1962
Subject:
agronomy; corn; cytoplasm; heterozygosity; inbred lines; male sterility; males; Texas
Abstract:
... SynopsisThe “U.S.D.A.”, Brazilian, Vg, and Reid male steriles were not greatly different in cytoplasmic-genotypic interactions involved in expression of male sterility. The Texas type differed from the others studied. Modifier genes in an inbred line background appeared to influence expression of male sterility more in the “U.S.D.A.” type than in the Texas type. A degree of selective fertilization ...
DOI:
10.2134/agronj1957.00021962004900100007x

88. Quality Characteristics of Two Pairs of Isogenic Lines of Wheat

Author:
I. M. Atkins; Karl F. Finney
Source:
Agronomy journal 1957 v.49 no.7 pp. 351-353
ISSN:
0002-1962
Subject:
awns; color; isogenic lines; seed coat; wheat; Texas
Abstract:
... SypnosisPaired isogenic lines, differing in one case in the presence or absence of awns and in the other in seed coat color, were compared in quality characteristics over a 3 year period in Texas and in regional nurseries. Within the limits of measuring quality now available, the pairs were identical. However, the awned segregate averaged 0.52 pound greater in test weight. ...
DOI:
10.2134/agronj1957.00021962004900070003x

89. Some Criteria for Capability Classification of the Soils of the Southern Great Plains of Texas

Author:
James R. Coover; Wm. C. Moldenhauer
Source:
Soil Science Society of America journal 1957 v.21 no.6 pp. 641-644
ISSN:
0361-5995
Subject:
climate; crop residues; crops; grain yield; rain; sandy loam soils; surface roughness; wind erosion; Great Plains region; Texas
Abstract:
... The natural cloddiness of soils largely determines their susceptibility to wind erosion. As cloddiness decreases, greater amounts of cover and surface roughness are needed to reduce soil losses to insignificant amounts. The use of a rotary sieve to help characterize soils for natural cloddiness is proposed. Procedures to be used are discussed. Results are reported from studies made of some of the ...
DOI:
10.2136/sssaj1957.03615995002100060018x

90. Fertility Restoration and Yields in Maize

Author:
G. H. Stringfield
Source:
Agronomy journal 1958 v.50 no.4 pp. 215-218
ISSN:
0002-1962
Subject:
corn; cytoplasm; genes; genotype; heterosis; Texas
Abstract:
... SynopsisTests of 30 maize cultures in the Texas (cms) cytoplasm and segregating for fertility restoring genes gave a significant advantage in yield for the restored plants. Apparently normal fertiles and restored fertiles are different in productiveness. Working hypotheses are: (1) Restorer genes have a pleiotropic vigor-producing effect, (2) The Texas cytoplasm is superior to the more common Unit ...
DOI:
10.2134/agronj1958.00021962005000040013x

91. Yields and Other Agronomic Characteristics of Cytoplasmically Pollen Sterile Corn Hybrids, Compared to Their Normal Counterparts

Author:
Donald N. Duvick
Source:
Agronomy journal 1958 v.50 no.3 pp. 121-125
ISSN:
0002-1962
Subject:
USDA; Zea mays; agronomic traits; corn; cytoplasm; genotype; grain yield; growing season; lodging; pollen; tillering; Texas
Abstract:
... SynopsisPerformance patterns of several corn hybrids were changed with respect to grain yield, barrenness, tillering and in one instance, root lodging when Texas (T) cytoplasm was substituted for the hybrids' normal cytoplasm. Grain yield and barrenness of another hybrid were affected when USDA (S) cytoplasm was substituted for its normal cytoplasm. The extent and direction of these induced change ...
DOI:
10.2134/agronj1958.00021962005000030003x

92. Establishment of Grasses on Sandy Soil of the Southern High Plains of Texas Using a Mulch and Simulated Moisture Levels

Author:
William C. Moldenhauer
Source:
Agronomy journal 1959 v.51 no.1 pp. 39-41
ISSN:
0002-1962
Subject:
germination; grasses; mulches; sandy soils; temperature; water content; weather; High Plains (United States); Texas
Abstract:
... SynopsisEmergence of seven grasses occurred at a much lower moisture level when a mulch covered the seeded area. The mulch was much less beneficial with cool temperatures during the period of germination. Weather records show that a mulch would have been helpful in 31% of the years at Big Spring, Texas, and 36% of the years at Seminole, Texas. ...
DOI:
10.2134/agronj1959.00021962005100010014x

93. Influence of Cropping System-Treatment Combinations and Climatic Factors on Corn Yields in the Blackland Area of Texas

Author:
J. W. Collier
Source:
Agronomy journal 1959 v.51 no.10 pp. 587-590
ISSN:
0002-1962
Subject:
climatic factors; corn; crop yield; irrigation; leaves; nitrates; nitrogen; soil; temperature; Texas
Abstract:
... SynopsisWithout irrigation, corn after sweetclover produced higher yields than continuous corn every year but one. Responses to nitrogen were small and inconsistent. Irrigation increased yields but responses to nitrogen occurred only in the continuous corn system. Soil nitrates and leaf nitrogen were generally higher from plots following sweetclover. Maximum yields were negatively correlated with ...
DOI:
10.2134/agronj1959.00021962005100100005x

94. Some Relationships Between Climate and Yields of Corn and Wheat in Spink County, South Dakota, and Yields of Milo and Cotton at Big Spring, Texas

Author:
W. C. Moldenhauer; F. C. Westin
Source:
Agronomy journal 1959 v.51 no.7 pp. 373-376
ISSN:
0002-1962
Subject:
Sorghum bicolor; agronomy; corn; cotton; rain; summer; temperature; wheat; South Dakota; Texas
Abstract:
... SynopsisTemperature was a highly important factor in crop yields. In Spink county, the effect of June and July average maximum temperatures on wheat and corn yields, respectively, overshadowed the effects of rainfall for these two months. At Big Spring, temperature effects also overshadowed the effects of seasonal rainfall. An explanation for the overshadowing effect of temperature is that summer ...
DOI:
10.2134/agronj1959.00021962005100070001x

95. The Influence of Nutrient Balance on Yield and Lodging of Texas Hybrid Corn No. 28

Author:
Flake L. Fisher; Oliver E. Smith
Source:
Agronomy journal 1960 v.52 no.4 pp. 201-204
ISSN:
0002-1962
Subject:
corn; crop yield; fertilizer application; hybrids; lodging; nitrogen; nitrogen fertilizers; nutrient balance; potassium; Texas
Abstract:
... SynopsisSoil nutrient balance had to be maintained along with at least 10,000 plants per acre to obtain good corn yields. Yield was shown to be a function of plant lodging, which was increased by nitrogen fertilization and decreased by potassium. ...
DOI:
10.2134/agronj1960.00021962005200040007x

96. Some Physical, Chemical, and Mineralogical Properties of Compacted and Adjacent Soil Layers in Coarse-Textured Soils

Author:
M. H. Milford; G. W. Kunze; M. E. Bloodworth
Source:
Soil Science Society of America journal 1961 v.25 no.6 pp. 511-515
ISSN:
0361-5995
Subject:
aluminum; cation exchange capacity; clay fraction; coarse-textured soils; exchangeable cations; feldspar; hardpans; hydraulic conductivity; illite; iron; organic matter; pH; quartz; sand; sand fraction; sandy loam soils; silt; soil texture; Texas
Abstract:
... Some physical, chemical, and mineralogical properties of compacted and adjacent soil layers, which were selected from cultivated and virgin Willacy fine sandy loam soils in the lower Rio Grande Valley of Texas, were studied to attain a better understanding of the compacted zone and its development. Hydraulic conductivity measurements and field studies substantiated the presence of a hardpan layer, ...
DOI:
10.2136/sssaj1961.03615995002500060028x

97. A Comparison of Selected Methods for Expressing Soil Aggregate Stability

Author:
Andrew W. Conaway; Edward Strickling
Source:
Soil Science Society of America journal 1962 v.26 no.5 pp. 426-430
ISSN:
0361-5995
Subject:
aggregate stability; cropping systems; silt loam soils; water stable soil aggregates; Maryland; North Carolina; South Dakota; Texas; Wisconsin
Abstract:
... Aggregate stability was determined on samples taken from plots under 10 cropping systems on a Beltsville silt loam and on samples taken from selected soil types in Maryland, North Carolina, South Dakota, Texas, and Wisconsin. Complete aggregate and mechanical analysis curves were determined on the 2.0- to 4.76-mm. fraction from each soil sample. The method of Bryant et al. (2) was also used to det ...
DOI:
10.2136/sssaj1962.03615995002600050007x

98. A Characterization and Genetic Study of Two Modal Reddish Prairie Soils

Author:
H. D. Molthan; Fenton Gray
Source:
Soil Science Society of America journal 1963 v.27 no.1 pp. 69-74
ISSN:
0361-5995
Subject:
Permian period; X-ray diffraction; brackish water; cation exchange capacity; clay; clay fraction; ethylene glycol; freshwater; illite; kaolinite; prairie soils; vermiculite; weathering; Kansas; Oklahoma; Texas
Abstract:
... The Zaneis and Kingfisher series are both developed from Permian “Red Bed” deposits and occur primarily in the Reddish Prairie Provinces of Oklahoma, Kansas, and Texas. Four profiles of the Zaneis series and two profiles of the Kingfisher series were sampled in detail. Chemical and physical studies were made on each subhorizon. Clay mineralogical studies were made for each major horizon. The clay ...
DOI:
10.2136/sssaj1963.03615995002700010025x

99. Grumusols of the Coast Prairie of Texas

Author:
G. W. Kunze; H. Oakes; M. E. Bloodworth
Source:
Soil Science Society of America journal 1963 v.27 no.4 pp. 412-421
ISSN:
0361-5995
Subject:
calcium carbonate; clay; clay fraction; clay soils; climatic factors; coasts; energy; fractionation; montmorillonite; physical properties; rain; soluble salts; Texas
Abstract:
... Morphological, chemical, mineralogical, and physical data are reported for 13 profiles of Grumusols, representing 3 soil series, all of which have developed in the Beaumont clay geological formation. These are the dominant soils in a narrow 10 million-acre strip, some 40 miles wide, that extends 300 miles in a southwest direction from the Texas-Louisiana border on the east to about Kingsville. Rai ...
DOI:
10.2136/sssaj1963.03615995002700040019x

100. Seed Treatment Studies on Sorghum in Texas

Author:
J. R. Quinby; Robert B. Stewart; G. M. Watkins
Source:
Agronomy journal 1963 v.55 no.6 pp. 550-551
ISSN:
0002-1962
Subject:
agronomy; seed treatment; Texas
Abstract:
... SynopsisThe most effective treatments increased emergence about 10%, but the least effective did not increase it at all. Organic protectants were more effective than mercurial. The protection increased as seed aged, but seed more than 2 years old did not emerge well enough to be used for planting. ...
DOI:
10.2134/agronj1963.00021962005500060014x