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Browsing Agronomy by Title

Browsing Agronomy by Title

Now showing items 18-37 of 78

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

Evers, Byron J.; Blanco-Canqui, Humberto; Staggenborg, Scott A.; Tatarko, John (2013-11-26)

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. (2014-02-25)

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 ...
Differentially expressed proteins associated with fusarium head blight resistance in wheat

Zhang, Xianghui; Fu, Jianming; Hiromasa, Yasuaki; Pan, Hongyu; Bai, Guihua (2014-03-12)

Background: Fusarium head blight (FHB), mainly caused by Fusarium graminearum, substantially reduces wheat grain yield and quality worldwide. Proteins play important roles in defense against the fungal infection. This study ...
Effect of planter speed and seed firmers on corn stand establishment

Staggenborg, Scott A.; Taylor, R. K.; Maddux, Larry D. (2008-12-18)

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. (2013-03-04)

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 (2013-03-20)

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 ...
Evaluation of wheat chromosome translocation lines for high temperature stress tolerance at grain filling stage

Pradhan, Gautam Prasad; Prasad, P. V. Vara (2015-03-24)

High temperature (HT, heat) stress is detrimental to wheat (Triticum aestivum L.) production. Wild relatives of bread wheat may offer sources of HT stress tolerance genes because they grow in stressed habitats. Wheat ...
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. (2013-10-25)

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 ...
Fate of Zinc Oxide Nanoparticles Coated onto Macronutrient Fertilizers in an Alkaline Calcareous Soil

Milani, N.; Hettiarachchi, Ganga M.; Kirby, J. K.; Beak, D. G.; Stacey, S. P.; McLaughlin, M. J.
Field evaluations on soil plant transfer of lead from an urban garden soil

Attanayake, Chammi P.; Hettiarachchi, Ganga; Harms, Ashley; Presley, DeAnn R.; Martin, Sabine; Pierzynski, Gary M. (2014-05-22)

Lead (Pb) is one of the most common contaminants in urban soils. Gardening in contaminated soils can result in Pb transfer from soil to humans through vegetable consumption and unintentional direct soil ingestion. A field ...
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 (2014-01-07)

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 ...
Fusarium-damaged kernels and deoxynivalenol in Fusarium-infected U.S. winter wheat

Jin, Feng; Bai, Guihua; Zhang, Dadong; Dong, Yanhong; Ma, Lingjian; Bockus, William W.; Dowell, Floyd E. (2014-06-09)

Fusarium head blight (FHB) is a devastating disease that threatens wheat (Triticum aestivum) production in many areas worldwide. FHB infection results in Fusarium-damaged kernels (FDK) and deoxynivalenol (DON) that ...
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 (2013-03-11)

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 ...
Genotypic diversity effects on biomass production in native perennial bioenergy cropping systems

Morris, Geoffrey P.; Hu, Z.; Grabowski, P. P.; Borevitz, J. O.; de Graaff, M. A.; Miller, R. M.; Jastrow, J. D.

The perennial grass species that are being developed as biomass feedstock crops harbor extensive genotypic diversity, but the effects of this diversity on biomass production are not well understood. We investigated the ...
Grain sorghum and corn comparisons: Yield, economic and environmental responses

Staggenborg, Scott A.; Dhuyvetter, Kevin C.; Gordon, W. B. (2008-12-19)

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. Vara; Boote, K.J.; Jones, J.W. (2011-10-07)

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 ...
Historical Synthesis-Analysis of Changes in Grain Nitrogen Dynamics in Sorghum

Ciampitti, Ignacio A.; Vara Prasad, P.V.

Unraveling the complexity underpinning nitrogen (N) use efficiency (NUE) can be physiologically approached via examining grain N sources and N internal efficiency (NIE) (yield to plant N content ratio). The main objective ...
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 (2013-09-26)

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 ...
Impact of changes in barometric pressure on landfill methane emission

Xu, Liukang; Lin, Xiaomao; Amen, Jim; Welding, Karla; McDermitt, Dayle (2014-11-06)

Landfill methane emissions were measured continuously using the eddy covariance method from June to December 2010. The study site was located at the Bluff Road Landfill in Lincoln, Nebraska, USA. Our results show that ...
Impact of high temperature stress on floret fertility and individual grain weight of grain sorghum: sensitive stages and thresholds for temperature and duration

Vara Prasad, P.V.; Djanaguiraman, M.; Perumal, R.; Ciampitti, Ignacio A.