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1. Tillage and Nitrogen Rates Influenced Wheat and Sorghum ProductivityReduced tillage (RT) or no-tillage (NT) practices and reducing fallow frequency can both decrease soil losses from wind erosion and conserve soil water in the semiarid regions of the US Great Plains. This study evaluated sorghum grain yield in 2013 and wheat grain yield in 2014 and 2015 as influenced by long-term nitrogen (N) fertilizer application rates (0, 20, 40, and 60 lb N ac- 1) and tillage intensity [clean tillage (CT), RT, and NT] in dryland winter wheat–sorghum-fallow (W-S-F) cropping... M. Mikha |
2. Enhanced Efficiency Nitrogen Fertilizer: Coated UreaNitrogen (N) is the most common fertilizer. However, a large percentage is lost to the environment—resulting in pollution and depletion of natural resources—representing economic losses. Enhanced Efficiency Fertilizers (EEF) help mitigate these problems by reducing the time N is in forms most susceptible to loss, increasing uptake efficiency and, often, yield and/or crop quality. One example of N EEF are coated urea fertilizers, such as polymer coated urea (PCU). Research studies show... S. Fahning, B.G. Hopkins |
3. Relationship Between Soil Health and Nutrient Availability in Semi-arid Cotton ProductionThe use of conservation management practices, like cover crops and no-tillage, is common in semi-arid cropping systems to reduce wind erosion. However, the use of these practices can also reduce cotton lint yield. The purpose of this study was to determine the impact of nitrogen (N) management in conservation cropping systems to increase cotton lint yield. Two experiments were conducted at the Agricultural Complex for Advanced Research and Extension Systems in Lamesa, TX, USA. The first experiment... J. Burke, K. Lewis, J. Foster |
4. Double Cropping Wheat System Effects on Soil Extracellular Enzyme Activity Related to Nitrogen and Phosphorous Cycling Across TexasConventional management of agricultural systems can threaten soil health by contributing to soil erosion, soil carbon loss, and inefficient water use in crop production. Cover crops and conservation tillage have been reported to improve soil health, but the additional planting and maintenance comes at an additional cost. Double-cropping systems have the potential to mitigate that cost by providing producers a secondary crop with an additional source of income while providing soil health benefits.... H. Valencia, K. Lewis, J. Foster |