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Browsing Agronomy by Title

Now showing items 13-32 of 49

Dedicated bioenergy crop impacts on soil wind erodibility and organic carbon in Kansas

Evers, Byron J.; Blanco-Canqui, Humberto; Staggenborg, Scott A.; Tatarko, John (2013)

Dedicated bioenergy crops such as perennial warm-season grasses (WSGs) may reduce soil erosion and improve soil properties while providing biomass feedstock for biofuel. We quantified impacts of perennial WSGs and row crops ...
Development and application of algorithms for simulating terraces within SWAT

Shao, Hui; Baffaut, Claire; Gao, Jian’en; Nelson, Nathan O.; Janssen, Keith A.; Pierzynski, Gary M.; Barnes, Philip L. (2013)

Terraces have been proven to be an effective conservation practice for controlling high soil loss. In large hydrological programs such as the Soil and Water Assessment Tool (SWAT), terrace effects are simulated by adjusting ...
Effect of planter speed and seed firmers on corn stand establishment

Staggenborg, Scott A.; Taylor, R. K.; Maddux, Larry D. (2004)

Proper planter adjustment and operation play an important role in uniform stand establishment for corn. A two−year study was conducted to assess the impact of planter speed and a seed−firming device on corn stand establishment ...
Evaluation of phosphorus indices after twenty years of science and development

Nelson, Nathan O.; Shober, Amy L. (2012)

The P Index was proposed as a nutrient management tool in 1992 and has been implemented as such for the past decade. However, lack of water quality improvement in agricultural watersheds and discrepancies in P loss ratings ...
Evaluation of three field-based methods for quantifying soil carbon

Izaurralde, Roberto C.; Rice, Charles W.; Wielopolski, Lucian; Ebinger, Michael H.; Thomson, Allison M.; Harris, Ronny; Francis, Barry; Mitra, Sudeep; Rappaport, Aaron G.; Etchevers, Jorge D.; Sayre, Kenneth D.; Govaerts, Bram; McCarty, Gregory W.; Reeves, James B. III (2013)

Three advanced technologies to measure soil carbon (C) density (g C mˉ²) are deployed in the field and the results compared against those obtained by the dry combustion (DC) method. The advanced methods are: a) Laser Induced ...
Examination of change factor methodologies for climate change impact assessment

Anandhi, Aavudai; Frei, Allan; Pierson, Donald C.; Schneiderman, Elliot M.; Zion, Mark S.; Lounsbury, David; Matonse, Adao H. (2011)

A variety of methods are available to estimate values of meteorological variables at future times and at spatial scales that are appropriate for local climate change impact assessment. One commonly used method is Change ...
Fusarium head blight resistance in U.S. winter wheat cultivars and elite breeding lines

Jin, Feng; Zhang, Dadong; Bockus, William W.; Baenziger, P. Stephen; Carver, Brett; Bai, Guihua (2013)

Fusarium (Fusarium graminearum) head blight (FHB) is a destructive disease of wheat (Triticum aestivum L.) worldwide. To characterize FHB resistance in U.S. wheat germplasm, 363 U.S. winter wheat accessions were repeatedly ...
Genomic selection in wheat breeding using genotyping-by-sequencing

Poland, Jesse A.; Endelman, Jeffrey; Dawson, Julie; Rutkoski, Jessica; Wu, Shuangye; Manes, Yann; Dreisigacker, Susanne; Crossa, José; Sánchez-Villeda, Héctor; Sorrells, Mark; Jannink, Jean-Luc (2012)

Genomic selection (GS) uses genomewide molecular markers to predict breeding values and make selections of individuals or breeding lines prior to phenotyping. Here we show that genotyping-by-sequencing (GBS) can be used ...
Grain sorghum and corn comparisons: Yield, economic and environmental responses

Staggenborg, Scott A.; Dhuyvetter, Kevin C.; Gordon, W. B. (2008)

Grain sorghum (Sorghum bicolor (L.) Moench) is often grown where water stress is expected. But, improved drought tolerance in corn (Zea mays (L.)) hybrids has resulted in increased dryland corn production in preference to ...
Groundnut yields response and economic benefits of fungicide and phosphorus application in farmer-managed trials in northern Ghana

Naab, J.B.; Seini, S.S.; Gyasi, K.O.; Mahama, G.Y.; Prasad, P.V.V.; Boote, K.J.; Jones, J.W. (2009)

Prior on-station research showed that sowing dates, sowing density and applications of fungicide and phosphorus (P) increased groundnut (Arachis hypogaea) pod yield by 60–80%. Farmer-managed trials were conducted in the ...
Identification of a novel gene, H34, in wheat using recombinant inbred lines and single nucleotide polymorphism markers

Li, Chunlian; Chen, Ming-Shun; Chao, Shiaoman; Yu, Jianming; Bai, Guihua (2013)

Hessian fly (HF), Mayetiola destructor, is an important pest of wheat (Triticum aestivum L.) worldwide. Because it has multiple biotypes that are virulent to different wheat HF resistance genes, pyramiding multiple resistance ...
Imputation of unordered markers and the impact on genomic selection accuracy

Rutkoski, Jessica E.; Poland, Jesse A.; Jannink, Jean-Luc; Sorrells, Mark E. (2013)

Genomic selection, a breeding method that promises to accelerate rates of genetic gain, requires dense, genome-wide marker data. Genotyping-by-sequencing can generate a large number of de novo markers. However, without a ...
Influence of fungicide and sowing density on the growth and yield of two groundnut cultivars

Naab, J.B.; Boote, K.J.; Prasad, P.V.V.; Seini, S.S.; Jones, J.W. (2009)

Groundnut or peanut (Arachis hypogaea L.) is a valuable food and forage crop in West Africa. It is important to determine yield-limiting factors and to develop suitable management practices to improve groundnut productivity. ...
Influence of submergence and subsequent drainage on the partitioning and lability of added selenium fertilizers in a Sri Lankan rice soil

Premarathna, H. M. P. L.; Mclaughlin, M. J.; Kirby, J. K.; Hettiarachchi, Ganga M.; Stacey, S. (2012)

The influence of submergence (anaerobic conditions) and subsequent drainage (aerobic conditions) in rice soils on the partitioning and lability of Se fertilizers was studied. We used an isotope dilution method to examine ...
Internationalization of soil physics from an American perspective

Kirkham, Mary B. (2012)

Upon the seventy-fifth anniversary of the Soil Science Society of America in 2011, a session was held at its annual meeting to document howthe field has changed over the years. I was asked to give the long-term perspective ...
Interpreting relationships between soil variables and soybean iron deficiency using factor analysis

Liesch, A. M.; Ruiz Diaz, Dorivar; Mengel, David B.; Roozeboom, Kraig L. (2012)

Iron chlorosis in soybean [Glycine max (L.) Merr.] can be difficult to predict and often depends on various soil factors. The objective of this study was to determine the underlying soil factors that are conducive to Fe ...
Long-term nitrogen and tillage effects on soil physical properties under continuous grain sorghum

Presley, DeAnn R.; Sindelar, Aaron J.; Buckley, Meghan E.; Mengel, David B. (2012)

Grain sorghum [Sorghum bicolor (L.) Moench] is an important grain crop grown in both highly productive and marginal areas in the central Great Plains because of the crop’s ability to utilize the erratic precipitation ...
Long-term spatial and temporal trends in frost indices in Kansas, USA

Anandhi, Aavudai; Perumal, Sriram; Gowda, Prasanna H.; Knapp, Mary C.; Hutchinson, Stacy L.; Harrington, John A., Jr.; Murray, Leigh W.; Kirkham, Mary B.; Rice, Charles W. (2013)

Frost indices such as number of frost days (nFDs), number of frost-free days (nFFDs), last spring freeze (LSF), first fall freeze (FFF), and growing-season length (GSL) were calculated using daily minimum air temperature ...
Managing diminished irrigation capacity with preseason irrigation and plant density for corn production

Schlegel, Alan J.; Stone, Loyd R.; Dumler, Troy J.; Lamm, Freddie R. (2012)

Many of the irrigation systems today in the U.S. Central Great Plains no longer have the capacity to match peak irrigation needs during the summer and must rely on soil water reserves to buffer the crop from water stress. ...
Molecular markers for leaf rust resistance gene Lr42 in wheat

Liu, Zhengli; Bowden, Robert L.; Bai, Guihua (2013)

Wheat leaf rust, caused by Puccinia triticina Eriks., is an important wheat foliar disease worldwide. Growing cultivars incorporating genetic resistance is one of the most effective approaches for disease control. Leaf ...

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