PubAg
Main content area
Limit your search
Search
7,244 Search Results
« Previous |
1 - 50 of 7,244
|
Next »
Search Results
- 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
- Author:
- Walter, I.A.; Allen, R.G.; Elliott, R.; Jensen, M.E.; Itenfisu, D.; Mecham, B.; Howell, T.A.; Snyder, R.; Brown, P.; Echings, 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:
- evapotranspiration; equations; grasses; field crops; Medicago sativa; alfalfa; crop coefficient
- Handle:
- 10113/2442
- 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
- Handle:
- 10113/2357
- Author:
- Tu, Shu-I; Gehring, Andrew; Irwin, Peter
- Source:
- Microbial safety of fresh produce / Xuetong Fan ... [et al.], editors pp. -
- Subject:
- raw fruit; disease detection; human diseases; cantaloupes; sprouts (food); irrigation water; raw vegetables; NADP (coenzyme); animal pathogenic bacteria; Medicago sativa; alfalfa; foodborne illness; food pathogens; Cucumis melo subsp. melo var. cantalupo; food safety; biosensors
- Handle:
- 10113/37328
- Author:
- Sullivan, Michael; Thoma, Sharon; Samac, Deborah; Hatfield, Ronald
- Source:
- Molecular breeding of forage and turf : the proceedings of the 3rd International Symposium on the Molecular Breeding of Forage and Turf / edited by A. Hopkins, [et al.] pp. -
- Subject:
- Trifolium pratense; Medicago sativa; alfalfa; catechol oxidase; molecular cloning; transgenic plants; proteolysis; conserved sequences; complementary DNA; enzyme activity; substrate specificity; gene expression regulation
- Abstract:
- ... Red clover contains high levels of polyphenol oxidase (PPO) activity and o-diphenol substrates. This results in a characteristic post-harvest browning reaction associated with decreased protein degradation during ensiling. To define PPO's role in inhibition of post-harvest proteolysis, we are taking both biochemical and molecular approaches. We have cloned three unique PPO cDNAs from red clover le ...
- Handle:
- 10113/43872
- 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
- Author:
- Cassida, Kim; Turner, Ken; Neel, Jim; Foster, Joyce
- Source:
- Appalachian workshop and research update : improving small ruminant grazing practices : proceedings : Beaver, West Virginia, 11 July 2009 / editor, Mario R. Morales pp. -
- Subject:
- goats; grazing; pastures; Medicago sativa; alfalfa; Trifolium pratense; Dactylis glomerata; liveweight gain; phosphorus; fertilizer application; phosphorus fertilizers; soil fertility; Cichorium intybus; chicory; Brassica; forage crops; gastrointestinal nematodes; nematode infections; nematode control; West Virginia; Pennsylvania
- Handle:
- 10113/42327
- Author:
- Coleman, S.W.; Hart, S.P.; Sahlu, T.
- Source:
- Proceedings of the XIX International Grassland Congress : grassland ecosystems : an outlook into the 21st century, 11-21 February 2001, Sao Pedro, Sao Paulo, Brazil pp. -
- Subject:
- Festuca arundinacea; Triticum aestivum; Bothriochloa bladhii; Bothriochloa ischaemum; Cynodon dactylon; Tripsacum dactyloides; Digitaria sanguinalis; Medicago sativa; alfalfa; forage grasses; hay; goats; animal feeding; dry matter intake; dry matter accumulation; digestibility; crude protein; rumination; liveweight gain; prediction
- Abstract:
- ... Eight species of forage, a cool-season perennial (Festuca arundinacea) and annual grass (Triticum aestivum), four warm-season perennial grasses (Bothriochloa caucasica, B. ischaemum, Cynodon dactylon, and Tripsacum dactyloides), a warm season annual (Digitaria sanguinalis) and a perennial legume (Medicago sativa), were cut at two or three maturities to provide a wide array of quality difference (n ...
- Handle:
- 10113/48406
- Author:
- Jaradat, A.A.; Archer, D.W.; Johnson, J.; VanKempen, S.; Wagner, S.; Eklund, J.
- Source:
- Proceedings of the 7th International Conference on Precision Agriculture and other precision resources management : July 25-28 2004, Minneapolis, Minnesota, USA / D.J. Mulla, ed pp. -
- Subject:
- plant growth; Zea mays; Glycine max; plant development; soil chemical properties; tillage; fertilizer application; soybeans; corn; wheat; alfalfa; Medicago sativa; crop yield; Triticum aestivum; multivariate analysis; crop rotation; cropping sequence; Minnesota
- Handle:
- 10113/47715
- Author:
- Ritchie, J.T.; Howell, T.A.; Meyer, W.S.; Wright, 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:
- evapotranspiration; estimation; equations; geographical variation; lysimeters; Medicago sativa; alfalfa; Triticum aestivum; wheat; solar radiation; wind; Ohio; California
- Handle:
- 10113/1660
- Author:
- Hendry, G.W.
- Source:
- Agronomy journal 1923 v.15 no.5 pp. 171-176
- ISSN:
- 0002-1962
- Subject:
- Medicago sativa; alfalfa; history; ethnobotany
- DOI:
- 10.2134/agronj1923.00021962001500050002x
- https://doi.org/10.2134/agronj1923.00021962001500050002x
- Author:
- Kennedy, P.B.
- Source:
- Agronomy journal 1927 v.19 no.8 pp. 750-752
- ISSN:
- 0002-1962
- Subject:
- forage; weeds; alfalfa
- DOI:
- 10.2134/agronj1927.00021962001900080006x
- https://doi.org/10.2134/agronj1927.00021962001900080006x
- Author:
- Kirk, L.E.
- Source:
- Agronomy journal 1927 v.19 no.3 pp. 225-242
- ISSN:
- 0002-1962
- Subject:
- alfalfa; forage crops; plant breeding; plant cultural practices; university research; grasses; Bromus; Saskatchewan
- Abstract:
- ... 1. Selection within self-fertilized lines is being used for the improvement of many of the normally cross-pollinated crops. In general, reduced vigor and increased uniformity within selfed lines appear to accompany inbreeding in practically all of the crops studied. The occurrence of abnormalities are met with in greater or less frequency depending upon the crop. The selfed lines of some crops beh ...
- DOI:
- 10.2134/agronj1927.00021962001900030004x
- https://doi.org/10.2134/agronj1927.00021962001900030004x
- Author:
- Kiesselbach, T.A.; Anderson, A.
- Source:
- Agronomy journal 1927 v.19 no.2 pp. 116-126
- ISSN:
- 0002-1962
- Subject:
- alfalfa; methodology; transpiration; alfalfa hay; leaves
- Abstract:
- ... Windrowing and cocking relatively green hay materially extended the curing period as compared with swath curing. Prolonged swath curing resulted in undue loss of leaves and bleaching. Judicious, partial swath curing to hasten the rate of drying, followed by windrowing and by prompt storage when cured would seem to be the best farm practice for this region. The normal transpiratory function of the ...
- DOI:
- 10.2134/agronj1927.00021962001900020003x
- https://doi.org/10.2134/agronj1927.00021962001900020003x
- Author:
- Jordan, H.V.
- Source:
- Agronomy journal 1927 v.19 no.4 pp. 280-284
- ISSN:
- 0002-1962
- Subject:
- irrigation; soil chemistry; alfalfa; crop rotation; nitrogen; carbon; soil water; dryland farming; New Mexico
- Abstract:
- ... Studies by others both in humid regions and in "dry-farming" regions have shown that one noticeable effect of cropping has been to decrease the nitrogen and organic carbon of soils. In the study described herein the nitrogen and organic carbon of a virgin arid soil was compared with that in similar adjacent soils that had been irrigated and growing alfalfa for two, three, six, and seven years, res ...
- DOI:
- 10.2134/agronj1927.00021962001900040003x
- https://doi.org/10.2134/agronj1927.00021962001900040003x
- Author:
- Lyon, T.L.
- Source:
- Agronomy journal 1927 v.19 no.6 pp. 534-544
- ISSN:
- 0002-1962
- Subject:
- grasses; grain crops; green manures; alfalfa; alfalfa hay; crop rotation
- Abstract:
- ... A partial review of recent experiment station literature concerning experiments to ascertain the effect of legumes, grasses, and green manures on the yields of succeeding crops shows the following. With a few exceptions experiments in the humid portions of the country have demonstrated the superiority of red clover and alfalfa over timothy in their effect on the yields of crops that follow. That t ...
- DOI:
- 10.2134/agronj1927.00021962001900060009x
- https://doi.org/10.2134/agronj1927.00021962001900060009x
- Author:
- Karraker, P.E.; Kenney, R.; McKenney, H.F.
- Source:
- Agronomy journal 1927 v.19 no.4 pp. 351-356
- ISSN:
- 0002-1962
- Subject:
- alfalfa; soil analysis; soil pH; Kentucky
- Abstract:
- ... "Richorpoor" solution, "soiltex," and litmus paper were used in testing the reaction of soil in alfalfa fields in the northern part of the bluegrass region of Kentucky. The fields from which results are given had never been limed. The purpose of the study was to find out the extent to which the tests could be used in determining need for liming for alfalfa on doubtful areas in this section. Both " ...
- DOI:
- 10.2134/agronj1927.00021962001900040010x
- https://doi.org/10.2134/agronj1927.00021962001900040010x
- Author:
- Brown, B.A.
- Source:
- Agronomy journal 1928 v.20 no.2 pp. 109-117
- ISSN:
- 0002-1962
- Subject:
- alfalfa; phosphorus; potassium fertilizers; fertilizer application
- Abstract:
- ... The effect of fertilizers on maintaining stands of alfalfa has received little attention if the scarcity of literature bearing on this point may be taken as a criterion. The stands and yields of alfalfa for 1923 to 1925 on a series of variously fertilized plats on Gloucester fine sandy loam soil at the Storrs (Connecticut) Agricultural Experiment Station are reported. All of the plats have been li ...
- DOI:
- 10.2134/agronj1928.00021962002000020003x
- https://doi.org/10.2134/agronj1928.00021962002000020003x
- Author:
- Carlson, J.W.
- Source:
- Agronomy journal 1928 v.20 no.6 pp. 542-556
- ISSN:
- 0002-1962
- Subject:
- alfalfa; flowers; pollination; pods
- Abstract:
- ... 1. This paper presents a report of the study of the seasonal behavior of alfalfa flowers as related to seed production. 2. Some stripping of alfalfa flowers is of common occurrence. The pods are also known to strip. 3. Of the 2,042 racemes studied 82.1% possessed pods with mature seed at harvest time. 4. On the average, 34.2% of the flowers on individual racemes formed pods, while the remainder st ...
- DOI:
- 10.2134/agronj1928.00021962002000060002x
- https://doi.org/10.2134/agronj1928.00021962002000060002x
- Author:
- Bartholomew, R.P.
- Source:
- Agronomy journal 1928 v.20 no.1 pp. 55-81
- ISSN:
- 0002-1962
- Subject:
- potassium; nutrient availability; alfalfa; oats; Sorghum bicolor subsp. drummondii; animal manures
- Abstract:
- ... Chemical analyses were made to determine the variations in the amount and availability of potassium manure. Alfalfa, oats, and Sudan grass were grown in quartz and soil cultures which had received various fertilizer treatments. In this manner some indication of the availability of the potassium in the manure was obtained. Analyses for potassium were made on the plants from jars which had received ...
- DOI:
- 10.2134/agronj1928.00021962002000010006x
- https://doi.org/10.2134/agronj1928.00021962002000010006x
- Author:
- Dillman, A.C.
- Source:
- Agronomy journal 1930 v.22 no.1 pp. 51-74
- ISSN:
- 0002-1962
- Subject:
- water content; grain crops; flax; wheat; seeds; alfalfa; absorption; harvesting
- Abstract:
- ... This paper reports the results of experiments on the rate of absorption of hygroscopic moisture by seeds of flax and wheat exposed to atmospheres of different relative humidities, the rate of drying of wet seeds, the effect of an air current on the rate of drying, and the rate of absorption of free water by wheat. The absorption and loss of moisture by standing grain is of particular significance ...
- DOI:
- 10.2134/agronj1930.00021962002200010006x
- https://doi.org/10.2134/agronj1930.00021962002200010006x
- Author:
- McCool, M.M.
- Source:
- Agronomy journal 1930 v.22 no.6 pp. 530-536
- ISSN:
- 0002-1962
- Subject:
- Trifolium; alfalfa; Medicago; soil pH; soil fertility; application methods
- DOI:
- 10.2134/agronj1930.00021962002200060007x
- https://doi.org/10.2134/agronj1930.00021962002200060007x
- Author:
- Dunnewald, T.J.
- Source:
- Agronomy journal 1931 v.23 no.9 pp. 744-750
- ISSN:
- 0002-1962
- Subject:
- crop production; nitrogen content; irrigation; soil chemistry; alfalfa; arid soils; phosphorus; Wyoming
- Abstract:
- ... Alfalfa growing on irrigated land builds up the organic matter and nitrogen content of arid soils and seems to bring up iron from the subsoil, counteracting the effects of too high lime content in the surface soils. Alfalfa should be rotated with cultivated crops or applications of superphosphate resorted to in order to keep up the yields on the older fields which are low in available phosphates. ...
- DOI:
- 10.2134/agronj1931.00021962002300090007x
- https://doi.org/10.2134/agronj1931.00021962002300090007x
- Author:
- Meyer, A.H.
- Source:
- Agronomy journal 1931 v.23 no.8 pp. 606-625
- ISSN:
- 0002-1962
- Subject:
- grain crops; soil chemistry; kaolin; nutrients; alfalfa; buckwheat; oats; corn; nutrient solutions; limestone; manganese; container-grown plants
- Abstract:
- ... The object of this study was to investigate some of the neglected soil factors in plant growth. It was observed in preliminary tests that when kaolin was added to the usual sand cultures better plant growth was obtained. As regards the factors involved, there appeared to be at least three possibilities, viz., (a) that kaolin contains as impurities small amounts of elements other than the usual 10 ...
- DOI:
- 10.2134/agronj1931.00021962002300080002x
- https://doi.org/10.2134/agronj1931.00021962002300080002x
- Author:
- Willard, C.J.
- Source:
- Agronomy journal 1931 v.23 no.11 pp. 853-859
- ISSN:
- 0002-1962
- Subject:
- water content; forage crops; forage; alfalfa; soybeans; Trifolium pratense
- Abstract:
- ... Studies of the percentage of dry matter in forage at different times of the day have been made on alfalfa, soybeans, red clover, sweet clover, and alsike clover over a series of years and for continuous periods in the development of the forages, involving several hundred observations. After the dew is off, the range in the percentage of dry matter in the green forage was almost never greater than ...
- DOI:
- 10.2134/agronj1931.00021962002300110001x
- https://doi.org/10.2134/agronj1931.00021962002300110001x
- Author:
- Grizzard, A.L.
- Source:
- Agronomy journal 1935 v.27 no.2 pp. 81-99
- ISSN:
- 0002-1962
- Subject:
- potassium fertilizers; nitrogen content; calcium; Medicago sativa; phosphorus fertilizers; alfalfa; soil types; limestone; alfalfa hay; mineral content; Michigan
- Abstract:
- ... This paper reports experimental data obtained from a partial chemical analysis of alfalfa grown on Isabella sandy loam, Montcalm sandy loam, Mancelona gravelly sandy loam, Fox sandy loam, Brookston loam, Brookston clay loam, Brookston silt loam, Gilford loam, and Miami silt loam. The first cuttings of alfalfa grown on the several soil types exhibited a much lower ratio of leaves to stems than the ...
- DOI:
- 10.2134/agronj1935.00021962002700020001x
- https://doi.org/10.2134/agronj1935.00021962002700020001x
- Author:
- Rather, H.C.; Dorrance, A.B.
- Source:
- Agronomy journal 1935 v.27 no.1 pp. 57-65
- ISSN:
- 0002-1962
- Subject:
- alfalfa; range management; grazing; farmers' attitudes; Michigan
- Abstract:
- ... Experiments at Augusta, Michigan, and the summarized opinions of 35 farmers experienced in pasturing alfalfa are drawn on for information on the utilization of this crop for grazing purposes. Alfalfa is a more desirable pasture crop than sweet clover in the opinion of nearly all of these farmers, an opinion which is supported by experimental evidence at Augusta. The advantages of alfalfa lay in gr ...
- DOI:
- 10.2134/agronj1935.00021962002700010008x
- https://doi.org/10.2134/agronj1935.00021962002700010008x
28. The relation between effective rainfall and total calcium and phosphorus in alfalfa and prairie hay
- Author:
- Daniel, H.A.; Harper, H.J.
- Source:
- Agronomy journal 1935 v.27 no.8 pp. 644-652
- ISSN:
- 0002-1962
- Subject:
- Schizachyrium scoparium; calcium; prairies; alfalfa; rain; seasonal variation; alfalfa hay; phosphorus; mineral content
- Abstract:
- ... Thirty samples of little blue stem (Andropogon scoparius) were collected each season for 5 years from Kirkland loam soil. Twenty of these samples were taken from plats that were fertilized each year with commercial fertilizer and 10 of the samples were obtained from unfertilized areas. Sixty-eight samples of alfalfa hay were collected from a brown sandy loam, similar to the Bates series of soils, ...
- DOI:
- 10.2134/agronj1935.00021962002700080006x
- https://doi.org/10.2134/agronj1935.00021962002700080006x
- Author:
- B. A. Brown; R. I. Munsell
- Source:
- Soil Science Society of America journal 1939 v.3 no.C pp. 217-221
- ISSN:
- 0361-5995
- Subject:
- acidity; alfalfa; grasses; grasslands; lime requirement; limestone; liming; pastures; sandy loam soils; soil pH
- Abstract:
- ... SummaryOn a series of twenty-six alfalfa plats, limestone was mixed with the plow layer (0–8″) of Charlton fine sandy loam soil at from four to ten tons per acre between 1914 and 1919. In 1937, the soil in these plats was sampled by six-inch layers to a depth of thirty-six inches and the acidity determined by the quinhydrone (pH) and the Jones lime requirement methods. By both methods, the results ...
- DOI:
- 10.2136/sssaj1939.036159950003000C0045x
- https://doi.org/10.2136/sssaj1939.036159950003000C0045x
- Author:
- B. A. Brown; E. A. Hollowell
- Source:
- Soil Science Society of America journal 1941 v.5 no.C pp. 131-139
- ISSN:
- 0361-5995
- Subject:
- Lespedeza; Trifolium pratense; Trifolium repens; acid soils; alfalfa; alkaline soils; aluminum compounds; animals; calcium; chlorine; cobalt; copper; exchangeable calcium; feeds; forage; forage crops; grasses; grazing; hay; heading; iodine; iron; liming; manganese; mature plants; meadows; minerals; minor elements; nitrogen; nitrogen content; nitrogen fertilizers; pH; pastures; phosphorus; potassium; protein content; sodium; soil texture; spring; superphosphate; tillage; vegetative growth; zinc; Northeastern United States
- Abstract:
- ... Discussion and SummaryA few cases have been cited to illustrate the relationship of soils and their fertilization on the chemical composition of hay and pasture. Because of the mixed vegetation usually occurring in meadows and pastures, including the experimental plots, it was necessary to omit references to classic examples of the remarkable variations in the botanical and chemical composition of ...
- DOI:
- 10.2136/sssaj1941.036159950005000C0023x
- https://doi.org/10.2136/sssaj1941.036159950005000C0023x
- Author:
- G. E. Smith; Wm. A. Albrecht
- Source:
- Soil Science Society of America journal 1943 v.7 no.C pp. 322-330
- ISSN:
- 0361-5995
- Subject:
- alfalfa; animal growth; bioassays; chemical analysis; climate; corn; crops; cultivars; digestive juices; disease resistance; drought tolerance; economic productivity; farms; feed conversion; feeds; fertilizer application; fertilizers; foods; grain quality; hardness; hay; lambs; lignin; limestone; metabolism; mineral content; new variety; nitrogen; nutrients; nutritive value; oats; oils; phosphates; phosphorus; phosphorus content; physicochemical properties; soil; soil nutrients; soil treatment; soybeans; sulfur; vegetative growth; wheat; wool
- Abstract:
- ... Discussion and SummaryResults of most agronomic researches are measured in terms of increased yields as bushels or tonnage of crops per acre. Biological assays now point out that these measures may not be accurate when agronomic products are to render their service in sustenance for animals. The values of improved varieties, of fertilizer treatments, of rotations, or soil management practices are ...
- DOI:
- 10.2136/sssaj1943.036159950007000C0053x
- https://doi.org/10.2136/sssaj1943.036159950007000C0053x
- Author:
- Dawson, J.E.; Musgrave, R.B.; Danielson, R.E.
- Source:
- Agronomy journal 1950 v.42 no.11 pp. 534-536
- ISSN:
- 0002-1962
- Subject:
- fungicides; alfalfa; alfalfa hay; chemical control
- Abstract:
- ... Thirty-one fungicides were tested for control of mold development in hay at equilibrium with air of 85% relative humidity, 20 +/- 4% water on wet basis at odds of 99 to 1. Three of these compounds, Dowicide 2, Dowicide 2S, and mycotox No. 1, gave complete control of losses at rates of 6 to 8 pounds per ton of hay. Three other compounds, mycotox No. 12, mycotox No. 20, and Dowicide 1, warrant furth ...
- DOI:
- 10.2134/agronj1950.00021962004200110002x
- https://doi.org/10.2134/agronj1950.00021962004200110002x
- Author:
- W. T. Dible; K. C. Berger
- Source:
- Soil Science Society of America journal 1952 v.16 no.1 pp. 60-62
- ISSN:
- 0361-5995
- Subject:
- alfalfa; boron; field experimentation; leaves; nutrient solutions; soil water
- Abstract:
- ... The object of this investigation was to explain the variations in the boron content of boron deficient alfalfa and to outline a procedure for sampling plants which will give a more accurate measure of the plant boron status. Alfalfa, grown in nutrient solutions where the boron was excluded during a stage of active elongation of the plant, contained 8 ppm of boron in the apical part of the shoot an ...
- DOI:
- 10.2136/sssaj1952.03615995001600010018x
- https://doi.org/10.2136/sssaj1952.03615995001600010018x
- Author:
- Sven L. Jansson; Francis E. Clark
- Source:
- Soil Science Society of America journal 1952 v.16 no.4 pp. 330-334
- ISSN:
- 0361-5995
- Subject:
- alfalfa; alfalfa hay; ammonium; bacterial growth; denitrification; environmental factors; flora; fungi; nitrates; nitrites; nitrogen; oat straw; oxidation; pH; porosity; toxicity; water content
- Abstract:
- ... Oat straw and alfalfa hay were decomposed in the presence of added inorganic nitrogen under differing conditions of incubation. Changes in organic, ammonium, and oxidized forms of nitrogen were determined. With plant material in shallow (3 mm) layers and at two-thirds moisture saturation, there was loss of nitrogen in decomposition of alfalfa, but not in decomposition of oat straw. Some influences ...
- DOI:
- 10.2136/sssaj1952.03615995001600040002x
- https://doi.org/10.2136/sssaj1952.03615995001600040002x
- Author:
- Juan Colom; T. M. McCalla
- Source:
- Soil Science Society of America journal 1952 v.16 no.2 pp. 208-210
- ISSN:
- 0361-5995
- Subject:
- Chamaecrista fasciculata; alfalfa; nitrates; nitrification; pods; soil; weight loss; wheat straw
- Abstract:
- ... Comparative decomposition rates of alfalfa, wheat straw, and whole partridge pea, or its various plant parts taken separately, were determined by measuring weight losses during laboratory incubations. Effects of these plant materials on nitrification rates in soil were also determined. The alfalfa lost the most weight by decomposition during a 32-week period. The loss in weight of straw also excee ...
- DOI:
- 10.2136/sssaj1952.03615995001600020027x
- https://doi.org/10.2136/sssaj1952.03615995001600020027x
- Author:
- E. O. McLean; F. E. Baker
- Source:
- Soil Science Society of America journal 1953 v.17 no.2 pp. 100-102
- ISSN:
- 0361-5995
- Subject:
- Phalaris arundinacea; alfalfa; calcium; cation exchange capacity; cations; clay; electrodes; grasses; liquid junction potential; potassium; potassium chloride; root systems; roots; sodium; soybeans
- Abstract:
- ... The activities and mean free bonding energies of Na, K, and Ca on alfalfa, soybean, red top, and Reed canary grass roots were determined by the use of the clay membrane electrode technique. Samples of electrodialyzed roots were saturated with each cation by addition as the hydroxide after the exchange capacity of the roots had been previously determined. Examination of the techniques employed show ...
- DOI:
- 10.2136/sssaj1953.03615995001700020004x
- https://doi.org/10.2136/sssaj1953.03615995001700020004x
- Author:
- A. P. Mazurak; A. W. Zingg; W. S. Chepil
- Source:
- Soil Science Society of America journal 1953 v.17 no.3 pp. 181-185
- ISSN:
- 0361-5995
- Subject:
- air drying; alfalfa; animal manures; barley; beets; clods; corn; crop rotation; erodibility; irrigation; manure spreading; potatoes; sieves; soil erosion; sugar beet; total nitrogen; water content; wind; wind tunnels
- Abstract:
- ... In April 1951, a portable wind tunnel was set up at the Scotts Bluff Substation on plots that were planted to sugar beets and potatoes. The soil losses from wind under controlled conditions were measured on manured and non-manured plots from (i) a 3-year rotation of barley, potatoes and sugar beets and (ii) a 6-year rotation of barley with alfalfa, alfalfa 3-years, potatoes and sugar beets. On the ...
- DOI:
- 10.2136/sssaj1953.03615995001700030001x
- https://doi.org/10.2136/sssaj1953.03615995001700030001x
- Author:
- John Hanway; George Stanford; H. R. Meldrum
- Source:
- Soil Science Society of America journal 1953 v.17 no.4 pp. 378-382
- ISSN:
- 0361-5995
- Subject:
- alfalfa; botanical composition; chemical composition; fertilizer application; hay; meadows; nutrient availability; phosphorus; phosphorus pentoxide; potassium; potassium fertilizers; residual effects; soil; soil analysis
- Abstract:
- ... A two-year experiment was conducted in which phosphorus and potassium fertilizers were topdressed each year on an alfalfa-timothy meadow. In 1950, rates of 0, 60, and 120 pounds per acre of P₂O₅ and K₂O were applied alone and in all combinations. In 1951 each plot was split with a factorial of 0 and 60 pounds per acre of P₂O₅ and K₂O. Determinations of yield, botanical composition and chemical com ...
- DOI:
- 10.2136/sssaj1953.03615995001700040020x
- https://doi.org/10.2136/sssaj1953.03615995001700040020x
- Author:
- A. Mehlich
- Source:
- Soil Science Society of America journal 1953 v.17 no.3 pp. 231-234
- ISSN:
- 0361-5995
- Subject:
- Triticum; adsorption; alfalfa; bicarbonates; calcium; cations; magnesium; metal ions; neutralization; nitrates; potassium; protons; roots; sodium; soil; titration; wheat
- Abstract:
- ... The adsorption of Ca, Mg, K and Na by metabolically inactive H-roots of wheat and alfalfa in relation to the nature of the anion has been studied. Titration curves and fH values showed wheat roots to have a weaker acid character than alfalfa roots. A high retention of H⁺ over metal cations was indicated. As a consequence, only small amounts of cations were adsorbed when offered as nitrates, but la ...
- DOI:
- 10.2136/sssaj1953.03615995001700030011x
- https://doi.org/10.2136/sssaj1953.03615995001700030011x
- Author:
- K. F. Nielsen; P. F. Pratt; W. P. Martin
- Source:
- Soil Science Society of America journal 1953 v.17 no.1 pp. 46-49
- ISSN:
- 0361-5995
- Subject:
- alfalfa; corn; green manures; greenhouses; phosphorus; phosphorus fertilizers; potassium dihydrogen phosphate; silt loam soils
- Abstract:
- ... Greenhouse work was conducted in which alfalfa and KH₂PO₄, singly and in combination, were used as phosphate fertilizers. These materials were layered into pots of Wooster silt loam representing three levels of residual phosphorus. The availability to corn of the phosphorus in these carriers of phosphorus and in the soil was measured by the use of radiotracer techniques. A series of Neubauer tests ...
- DOI:
- 10.2136/sssaj1953.03615995001700010011x
- https://doi.org/10.2136/sssaj1953.03615995001700010011x
- Author:
- J. R. Gingrich; F. W. Smith
- Source:
- Soil Science Society of America journal 1953 v.17 no.4 pp. 383-386
- ISSN:
- 0361-5995
- Subject:
- alfalfa; ammonium nitrate; chemical analysis; crop year; data analysis; grain yield; nitrogen; nitrogen fertilizers; oats; phosphoric acid; phosphorus; potassium; soil; sowing date; wheat; Kansas
- Abstract:
- ... Four wheat and three oat fertilizer experiments were established at various locations in the eastern half of Kansas for the crop year 1950–51. Objectives of these experiments were to obtain information (1) relative to the best time, rate, and method of applying nitrogenous fertilizers to wheat and oats, and (2) concerning the use of phosphorus and potassium in combination with various rates of nit ...
- DOI:
- 10.2136/sssaj1953.03615995001700040021x
- https://doi.org/10.2136/sssaj1953.03615995001700040021x
- Author:
- E. J. Dennis; Leon Chesnin
- Source:
- Soil Science Society of America journal 1953 v.17 no.1 pp. 49-52
- ISSN:
- 0361-5995
- Subject:
- alfalfa; calcium; cations; greenhouse experimentation; magnesium; nitrogen; phosphates; phosphorus; phosphorus fertilizers; soil horizons; total nitrogen; total phosphorus; Nebraska
- Abstract:
- ... Thurman, Carrington, Crete, and Crofton soils of eastern Nebraska were sampled by horizons to determine their availability of phosphorus to alfalfa. In a greenhouse study, alfalfa was grown on part of each sample which was treated with phosphate fertilizer, and part which was left untreated. The growth and composition of the alfalfa made on the untreated soil provided a measure of the availability ...
- DOI:
- 10.2136/sssaj1953.03615995001700010012x
- https://doi.org/10.2136/sssaj1953.03615995001700010012x
- Author:
- C. W. Bingeman; J. E. Varner; W. P. Martin
- Source:
- Soil Science Society of America journal 1953 v.17 no.1 pp. 34-38
- ISSN:
- 0361-5995
- Subject:
- alfalfa; biodegradation; carbon 14; carbon dioxide; glucose; organic matter; organic soils; radiolabeling
- Abstract:
- ... Glucose, alfalfa insolubles, and complete alfalfa uniformly labeled with carbon-14 were added to an organic soil to determine under controlled conditions, if the loss of the soil due to biological decomposition could be counteracted. Carbon-14 labeled material was used so that it could be determined whether or not there was an increase in the decomposition of the native organic matter as a result ...
- DOI:
- 10.2136/sssaj1953.03615995001700010008x
- https://doi.org/10.2136/sssaj1953.03615995001700010008x
- Author:
- Maurice Fried
- Source:
- Soil Science Society of America journal 1953 v.17 no.4 pp. 357-359
- ISSN:
- 0361-5995
- Subject:
- Bromus; Crotalaria; Dactylis glomerata; Lolium perenne; alfalfa; buckwheat; grasses; millets; monocalcium phosphate; oats; phosphorus; rock phosphate
- Abstract:
- ... Plant species were compared as to their feeding power for both monocalcium phosphate and rock phosphate. Even after the effect of size and extensiveness of the root absorbing surface was eliminated, species differed in their capacity to absorb phosphorus from basic calcium phosphates. The phosphorus of rock phosphate was most available to buckwheat and was more available to the legumes, alfalfa, c ...
- DOI:
- 10.2136/sssaj1953.03615995001700040014x
- https://doi.org/10.2136/sssaj1953.03615995001700040014x
- Author:
- D. L. Hallock; O. J. Attoe
- Source:
- Soil Science Society of America journal 1954 v.18 no.1 pp. 64-67
- ISSN:
- 0361-5995
- Subject:
- alfalfa; farms; inorganic phosphorus; organic soils; phosphorus content; silt loam soils; soil organic phosphorus; soil pH
- Abstract:
- ... A study was made of the availability to alfalfa of acid soluble and alkali soluble inorganic and organic soil phosphorus. Samples of both soil and alfalfa were taken from experimental plots and farm fields located on eight soil types. In the case of the plot samples, it was found that the content of acid soluble soil phosphorus in 1948 and soil pH in 1949 were the variables most closely related to ...
- DOI:
- 10.2136/sssaj1954.03615995001800010016x
- https://doi.org/10.2136/sssaj1954.03615995001800010016x
46. Effect of Rate and Placement of Superphosphate on the Yield and Phosphorus Absorption of Legume Hay
- Author:
- K. Lawton; M. B. Tesar; B. Kawin
- Source:
- Soil Science Society of America journal 1954 v.18 no.4 pp. 428-432
- ISSN:
- 0361-5995
- Subject:
- Bromus; absorption; alfalfa; cutting; fertilizers; forage; hay; meadows; phosphorus; phosphorus content; phosphorus pentoxide; soil; spring; superphosphate; Michigan
- Abstract:
- ... A study was undertaken to determine the effect of superphosphate topdressing on the yield and phosphorus content of legume and legume-grass hay. Radioactive superphosphate containing 20% P₂O₅ was broadcast in the early spring on established meadows at five locations in central Michigan. A significant yield response of first cutting hay was obtained on all fields as a result of topdressed applicati ...
- DOI:
- 10.2136/sssaj1954.03615995001800040019x
- https://doi.org/10.2136/sssaj1954.03615995001800040019x
- Author:
- E. O. McLean; D. Adams
- Source:
- Soil Science Society of America journal 1954 v.18 no.3 pp. 273-275
- ISSN:
- 0361-5995
- Subject:
- Phalaris arundinacea; alfalfa; buckwheat; calcium; cation exchange capacity; cations; clay; crops; electrodes; energy; oats; phosphates; potassium; prediction; roots; solubility; weathering
- Abstract:
- ... Cationic activities were determined by means of clay membrane electrodes, and mean free bonding energies were computed for Ca and K in systems of plant roots representing five different plant species. The study involved measurements in both homoionic and biionic systems of roots from Reed canary grass, red top, oats, alfalfa, and buckwheat. When all cation saturations of the roots studied are cons ...
- DOI:
- 10.2136/sssaj1954.03615995001800030011x
- https://doi.org/10.2136/sssaj1954.03615995001800030011x
48. Solubility of Phosphorus in Chemical Extractants as Indexes to Available Phosphorus in Ohio Soils
- Author:
- L. F. Thompson; P. F. Pratt
- Source:
- Soil Science Society of America journal 1954 v.18 no.4 pp. 467-470
- ISSN:
- 0361-5995
- Subject:
- alfalfa; citric acid; corn; greenhouses; hydrochloric acid; phosphorus; radioactivity; sodium bicarbonate; soil; solubility; soluble phosphorus; sulfuric acid; superphosphate; Ohio
- Abstract:
- ... Eighteen samples of soils were subjected to greenhouse cropping with alfalfa and corn and to various extractant solutions for measurements of soluble P. The P removed from the soils by alfalfa and the “A” values calculated from the uptake by corn of radioactivity tagged superphosphate were used as a measure of plant-available P. The accuracy of estimation of available P by the solubility data was ...
- DOI:
- 10.2136/sssaj1954.03615995001800040028x
- https://doi.org/10.2136/sssaj1954.03615995001800040028x
- Author:
- A. C. Caldwell; A. Hustrulid; F. L. Hammers; J. M. MacGregor
- Source:
- Soil Science Society of America journal 1954 v.18 no.4 pp. 440-443
- ISSN:
- 0361-5995
- Subject:
- absorption; alfalfa; meadows; phosphorus; phosphorus content; phosphorus fertilizers; phosphorus pentoxide; potassium; silt loam soils; spring; superphosphate; tricalcium phosphate
- Abstract:
- ... In the spring of 1950 radioactive superphosphate and fused tricalcium phosphate at rates of 40 and 120 pounds of P₂O₅ per acre were applied as a topdressing to alfalfa on two fields of Waukegan silt loam. Superphosphate was more effective than fused tricalcium phosphate in supplying phosphorus to the plant but differences became less with time. The yield and phosphorus content of alfalfa were incr ...
- DOI:
- 10.2136/sssaj1954.03615995001800040022x
- https://doi.org/10.2136/sssaj1954.03615995001800040022x
- Author:
- Albert E. Kretschmer; W. T. Forsee
- Source:
- Soil Science Society of America journal 1954 v.18 no.4 pp. 471-474
- ISSN:
- 0361-5995
- Subject:
- Avena sativa; Brassicaceae; Digitaria eriantha; Lolium; Paspalum notatum; Stenotaphrum secundatum; Trifolium pratense; Trifolium subterraneum; Vicia; alfalfa; cattle; chlorosis; copper; copper deficiency; copper sulfate; cupric oxide; eggplants; fertilizers; field experimentation; forage; forage crops; green leafy vegetables; greenhouse experimentation; greenhouses; muck soils; oats; plant growth; plant response; root crops; tomatoes; Florida
- Abstract:
- ... One of the classic examples of plant response to Cu is found in the vast area of organic soils of Peninsular Florida. Most crops failed to grow on these soils until the middle 1920's when the need for Cu was first demonstrated. Tremendous growth response of various leafy vegetables, cruciferous plants, root crops, eggplant, tomatoes, and certain forage crops have been obtained with initial applica ...
- DOI:
- 10.2136/sssaj1954.03615995001800040029x
- https://doi.org/10.2136/sssaj1954.03615995001800040029x