PubAg
Main content area
Limit your search
Search
14 Search Results
1 - 14 of 14
Search Results
- Author:
- D. R. Huggins, et al. ; W. L. Pan; F. L. Young; T. M. Maaz; Show all 4 Authors
- Source:
- Crop & pasture science 2016 v.67 no.4 pp. 253-265
- ISSN:
- 1836-0947
- Subject:
- agricultural machinery and equipment; agroecological zones; canola; climate change; cold; crop insurance; crop rotation; cultivars; direct seeding; disease control; economic analysis; ecophysiology; energy crops; fallow; fuel production; issues and policy; markets; oilseed crops; plant adaptation; planting; prediction; risk; seedlings; semiarid zones; soil; spring; summer; weed control; weeds; wheat; winter; Northwestern United States; Pacific States
- Abstract:
- ... The inland Pacific Northwestern USA (iPNW) wheat-producing region has a diversity of environments and soils, yet it lacks crop diversity and is one of the few semi-arid wheat-growing regions without significant integration of oilseeds. Four major agroecological zones, primarily characterised by water availability, feature distinctly different fallowed and annually cropped systems, each presenting ...
- Handle:
- 10113/62553
- DOI:
- 10.1071/CP15217
- https://doi.org/10.1071/CP15217
- Author:
- D. R. Huggins, et al. ; J. C. Dawson; K. M. Murphy; S. S. Jones; Show all 4 Authors
- Source:
- Organic agriculture 2011 v.1 no.2 pp. 65-80
- ISSN:
- 1879-4238
- Subject:
- aboveground biomass; analysis of variance; breeding lines; crops; cultivars; ecological zones; environmental management; grain protein; grain yield; management systems; nitrogen; nitrogen content; organic production; plant breeding; selection index; winter wheat; Pacific States
- Abstract:
- ... There is growing interest in breeding crop cultivars specifically for organic agriculture, based on recognized differences in environmental conditions and management in organic systems compared to conventional systems, and especially due to environmental heterogeneity among and within individual organic systems. There is a need to develop effective strategies for improving crop performance in orga ...
- DOI:
- 10.1007/s13165-011-0006-3
- https://doi.org/10.1007/s13165-011-0006-3
3. Carbon Sequestration in Native Prairie, Perennial Grass, No-Till, and Cultivated Palouse Silt Loam
- Author:
- D. R. Huggins, et al. ; T. J. Purakayastha; J. L. Smith; Show all 3 Authors
- Source:
- Soil Science Society of America journal 2008 v.72 no.2 pp. 534-540
- ISSN:
- 0361-5995
- Subject:
- Poa pratensis; grasses; agricultural soils; mineralization; soil organic carbon; no-tillage; prairie soils; conventional tillage; land use; bulk density; carbon sequestration; biological activity in soil; silt loam soils; prairies; grassland soils; Idaho
- Abstract:
- ... Comparative assessments for evaluating soil organic C (SOC) and its characteristics were made at different soil (Palouse silt loam) depths (0–5, 5–10, 10–20, and 0–20 cm) among sites with seven contrasting management histories: conventional inversion tillage (CT) followed by no-till (NT) for 4 (NT4) and 28 (NT28) yr; bluegrass (Poa pratensis L.) seed production for 9 yr followed by NT for 4 yr (BG ...
- Handle:
- 10113/12330
- DOI:
- 10.2136/sssaj2005.0369
- https://doi.org/10.2136/sssaj2005.0369
- Author:
- D. R. Huggins, et al. ; R. R. Allmaras (deceased); C. E. Clapp; J. A. Lamb; G. W. Randall; Show all 5 Authors
- Source:
- Soil Science Society of America journal 2007 v.71 no.1 pp. 145-154
- ISSN:
- 0361-5995
- Subject:
- Zea mays; Glycine max; soil organic carbon; plowing; isotopes; soybeans; corn; cropping sequence; carbon sequestration; grain yield; soil pH; soil-atmosphere interactions; disturbed soils
- Abstract:
- ... Soil organic carbon (SOC) in agroecosystems is regulated by crop rotation and soil disturbance. We assessed crop sequence and tillage effects on SOC dynamics and storage using natural ¹³C abundance of corn (Zea mays L.) and soybean [Glycine max (L.), Merr.]. Treatments consisted of tillage: moldboard plow (MP), chisel plow (CP), and no-tillage (NT); and crop sequence: continuous corn (CC), continu ...
- Handle:
- 10113/8145
- DOI:
- 10.2136/sssaj2005.0231
- https://doi.org/10.2136/sssaj2005.0231
- Author:
- D. R. Huggins, et al. ; P. J. A. Kleinman; S. Spiegal; J. R. Rigby; S. C. Goslee; J. M. Baker; B. T. Bestelmeyer; R. K. Boughton; R. B. Bryant; M. A. Cavigelli; J. D. Derner; E. W. Duncan; D. C. Goodrich; K. W. King; M. A. Liebig; M. A. Locke; S. B. Mirsky; G. E. Moglen; T. B. Moorman; F. B. Pierson; G. P. Robertson; E. J. Sadler; J. S. Shortle; J. L. Steiner; T. C. Strickland; H. M. Swain; T. Tsegaye; M. R. Williams; C. L. Walthall; Show all 29 Authors
- Source:
- Journal of environmental quality 2018 v.47 no.6 pp. 1412-1425
- ISSN:
- 0047-2425
- Subject:
- Long-Term Agroecosystem Research Network; agroecosystems; cropland; diet; ecosystem services; energy; energy industry; environmental protection; environmental quality; feed industry; food production; natural resources conservation; pastures; rangelands; rural development; sustainable agricultural intensification; textile industry; United States
- Abstract:
- ... Agriculture in the United States must respond to escalating demands for productivity and efficiency, as well as pressures to improve its stewardship of natural resources. Growing global population and changing diets, combined with a greater societal awareness of agriculture's role in delivering ecosystem services beyond food, feed, fiber, and energy production, require a comprehensive perspective ...
- Handle:
- 10113/6562443
- DOI:
- 10.2134/jeq2018.05.0171
- https://doi.org/10.2134/jeq2018.05.0171
- Author:
- D. R. Huggins, et al. ; M. Mamo; G. L. Malzer; D. J. Mulla; J. Strock; Show all 5 Authors
- Source:
- Agronomy journal 2003 v.95 no.4 pp. 958-964
- ISSN:
- 0002-1962
- Subject:
- temporal variation; Zea mays; Glycine max; fields; fertilizer rates; soybeans; corn; precision agriculture; grain yield; variable rate application; spatial variation; crop rotation; nitrogen fertilizers; Minnesota
- Abstract:
- ... The economically optimum N rate (EONR) required for corn (Zea mays L.) may vary spatially due to variation in soil characteristics and temporally due to the interactions of environmental factors. The objectives of this research were to quantify the impact of field variability on the yield response of corn to N fertilization and to evaluate the temporal stability of these response functions. A prod ...
- Handle:
- 10113/44276
- DOI:
- 10.2134/agronj2003.9580
- https://doi.org/10.2134/agronj2003.9580
- Author:
- D. R. Huggins, et al. ; S. Spiegal; B. T. Bestelmeyer; D. W. Archer; D. J. Augustine; E. H. Boughton; R. K. Boughton; M. A. Cavigelli; P. E. Clark; J. D. Derner; E. W. Duncan; C. J. Hapeman; R. D. Harmel; P. Heilman; M. A. Holly; K. King; P. J. A. Kleinman; M. A. Liebig; M. A. Locke; G. W. McCarty; N. Millar; S. B. Mirsky; T. B. Moorman; F. B. Pierson; J. R. Rigby; G. P. Robertson; J. L. Steiner; T. C. Strickland; H. M. Swain; B. J. Wienhold; J. D. Wulfhorst; M. A. Yost; C. L. Walthall; Show all 33 Authors
- Source:
- Environmental research letters 2018 v.13 no.3 pp. 034031
- ISSN:
- 1748-9326
- Subject:
- Long-Term Agroecosystem Research Network; agricultural products; cropland; decision making; ecological restoration; ecosystem services; environmental quality; environmental stewardship; input costs; models; outreach; pastures; production technology; rangelands; scientists; society; stakeholders; sustainable agricultural intensification; uncertainty; United States
- Abstract:
- ... Sustainable intensification is an emerging model for agriculture designed to reconcile accelerating global demand for agricultural products with long-term environmental stewardship. Defined here as increasing agricultural production while maintaining or improving environmental quality, sustainable intensification hinges upon decision-making by agricultural producers, consumers, and policy-makers. ...
- Handle:
- 10113/5931566
- DOI:
- 10.1088/1748-9326/aaa779
- https://doi.org/10.1088/1748-9326/aaa779
- Author:
- D. R. Huggins, et al. ; S. L. Zhao; S. C. Gupta; J. F. Moncrief; Show all 4 Authors
- Source:
- Journal of environmental quality 2000 v.29 no.3 pp. 817-825
- ISSN:
- 0047-2425
- Subject:
- Zea mays; subsurface drainage; nitrate nitrogen; losses from soil; crop yield; simulation models
- Abstract:
- ... Nitrate N from artificially drained soils of the upper Midwest USA is finding its way to the Mississippi River and then to the Gulf of Mexico. There is some concern that this nitrate N is causing hypoxia in the Gulf of Mexico. The DRAINMOD-N model was used to evaluate the long-term effect of N application rate and drain spacing on corn (Zea mays L.) yield and nitrate N losses. Prior to evaluation, ...
- DOI:
- 10.2134/jeq2000.00472425002900030018x
- https://doi.org/10.2134/jeq2000.00472425002900030018x
9. Nitrogen Efficiency Component Analysis: An Evaluation of Cropping System Differences in Productivity
- Author:
- D. R. Huggins, et al. ; W. L. Pan; Show all 2 Author
- Source:
- Agronomy journal 1993 v.85 no.4 pp. 898-905
- ISSN:
- 0002-1962
- Subject:
- mathematical models; nitrogen; nutrient availability; cropping systems; nutrient uptake; Triticum aestivum; soil fertility; yield components; grains; chemical constituents of plants
- Abstract:
- ... The development of cropping systems that use N efficiently requires methods that evaluate system differences in N use. A procedure, based conceptually on soil and plant processes that affect N use, was developed to evaluate differences in N use efficiency among cropping systems. The method uses measurements of yield, grain N, aboveground plant N, applied N, and postharvest inorganic soil N to part ...
- DOI:
- 10.2134/agronj1993.00021962008500040022x
- https://doi.org/10.2134/agronj1993.00021962008500040022x
- Author:
- D. R. Huggins, et al. ; D. Giménez; R. R. Allmaras; E. A. Nater; Show all 4 Authors
- Source:
- Soil Science Society of America journal 1997 v.61 no.5 pp. 1285-1292
- ISSN:
- 0361-5995
- Subject:
- soil analysis; saturated hydraulic conductivity; prediction; soil pore system; soil heterogeneity; mathematical models; porosity
- Abstract:
- ... Fractal theory has been used to quantify morphological properties of pore systems in soil, but predictive capabilities of the derived fractal dimensions have remained largely untested. The objective of this study was to use morphologically derived fractal dimensions to predict an exponent N in a power law relation between saturated hydraulic conductivity, Kₛₐₜ, and porosity. A Kozeny-Carman equati ...
- DOI:
- 10.2136/sssaj1997.03615995006100050001x
- https://doi.org/10.2136/sssaj1997.03615995006100050001x
- Author:
- D. R. Huggins, et al. ; W. L. Pan; Show all 2 Author
- Source:
- Soil Science Society of America journal 1991 v.55 no.3 pp. 823-829
- ISSN:
- 0361-5995
- Subject:
- Lens culinaris; Pisum sativum subsp. sativum var. arvense; Triticum aestivum; branching; conventional tillage; crop production; crop rotation; lentils; necrosis; no-tillage; overwintering; photosynthetically active radiation; shade; soil water; stems; stubble; winter; winter wheat
- Abstract:
- ... The adoption of no-tillage systems in the Pacific Northwest will benefit from the development of crop rotations that complement winter wheat (Triticum aestivum L.). Experiments were conducted during 1986–1987 and 1988–1989 to determine the effects of wheat residue and fertility management on the growth, winter survival, and yield of ‘Glacier’ Austrian winter pea (Pisum sativum subsp. arvense L.) a ...
- DOI:
- 10.2136/sssaj1991.03615995005500030032x
- https://doi.org/10.2136/sssaj1991.03615995005500030032x
- Author:
- D. R. Huggins, et al. ; C. E. Clapp; R. R. Allmaras; J. A. Lamb; M. F. Layese; Show all 5 Authors
- Source:
- Soil Science Society of America journal 1998 v.62 no.1 pp. 195-203
- ISSN:
- 0361-5995
- Subject:
- mineralization; Zea mays; Glycine max; fractionation; humification; soil organic matter; fallow; carbon; continuous cropping; crop rotation; stable isotopes; Minnesota
- Abstract:
- ... Carbon flow in terrestrial ecosystems regulates partitioning between soil organic C (SOC) and atmospheric CO₂. Our objectives were to assess SOC dynamics using natural ¹³C abundance in corn (Zea mays L., a C₄ species)-soybean [Glycine max (L.) Merr., a C₃ species] sequences. Fifteen treatments of continuous corn, continuous soybean, various sequences of corn and soybean, and fallow were initiated ...
- DOI:
- 10.2136/sssaj1998.03615995006200010026x
- https://doi.org/10.2136/sssaj1998.03615995006200010026x
- Author:
- D. R. Huggins, et al. ; G. W. Randall; M. P. Russelle; D. J. Fuchs; W. W. Nelson; J. L. Anderson; Show all 6 Authors
- Source:
- Journal of environmental quality 1997 v.26 no.5 pp. 1240-1247
- ISSN:
- 0047-2425
- Subject:
- Conservation Reserve Program; Glycine max; Medicago sativa; Zea mays; aboveground biomass; alfalfa; corn; crop production; cropping systems; crops; drainage water; nitrate nitrogen; nitrates; poorly drained soils; rain; soil profiles; soil water; soil water content; soybeans; subsurface drainage; tile drainage; tiles
- Abstract:
- ... Subsurface drainage of gravitational water from the soil profile through tiles is a common practice used to improve crop production on poorly drained soils. Previous research has often shown significant concentrations of nitrate-N (NO₃-N) in drainage water from row-crop systems, but little drainage research has been conducted under perennial crops such as those used in the Conservation Reserve Pro ...
- DOI:
- 10.2134/jeq1997.00472425002600050007x
- https://doi.org/10.2134/jeq1997.00472425002600050007x
- Author:
- D. R. Huggins, et al. ; H. P. Collins; D. R. Christenson; R. L. Blevins; L. G. Bundy; W. A. Dick; E. A. Paul; Show all 7 Authors
- Source:
- Soil Science Society of America journal 1999 v.63 no.3 pp. 584-591
- ISSN:
- 0361-5995
- Subject:
- soil profiles; Zea mays; long term experiments; soil organic matter; crop residues; corn soils; carbon; carbon sequestration; ecosystems; continuous cropping; Michigan; Ohio; Corn Belt region; Minnesota; Wisconsin; Kentucky
- Abstract:
- ... We used natural ¹³C abundance in soils to calculate the fate of C₄-C inputs in fields cropped to continuous corn (Zea mays L.). Soil samples were collected from eight cultivated and six adjacent, noncultivated sites of the Corn Belt region of the central USA. The amount of organic C in cultivated soils declined an average of 68%, compared with adjacent, noncultivated sites. The δ ¹³C of cultivated ...
- DOI:
- 10.2136/sssaj1999.03615995006300030022x
- https://doi.org/10.2136/sssaj1999.03615995006300030022x