Glyphosate-resistant (GR) corn may be a major component of new cropping systems to optimize the use of limited irrigation water supply while sustaining production. Because atrazine is an important tool for residual weed control in GR corn, we examined atrazine binding to soil, dissipation, movement, and early season weed control in limited and full irrigation cropping systems. These systems included continuous corn under conventional tillage and full irrigation (CCC-FI) and under no-tillage and deficit irrigation (CCC-DI), a sunflower-wheat-corn rotation under no-tillage and deficit irrigation (SWC-DI), and a wheat-fallow-wheat-corn rotation under no tillage and natural precipitation (WFWC-NP).
View Article and Find Full Text PDFThe success of site-specific nematode management depends on a grower or advisor being able to afford to make a map of an infestation that is accurate enough for management decisions. The spatial dependence of nematode infestations and correlation of soil attributes with nematode density were assessed to investigate the scale of sampling required to obtain correlated observations of density and the use of soils data to reduce the cost of sampling. Nematodes and soil were sampled on a 76.
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