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1. Effects of Phosphorus and Potassium Application Timing on a Wheat Double Crop Soybean SystemThe wheat-double crop soybean system is a popular choice for Oklahoma producers, as it allows for two crops in one year, and therefore, more revenue in less time. With favorable conditions and proper management, double crop soybeans are yielding as well as full season soybeans. Weather pattern shifts over the last few years have raised the question for growers if they should invest more into the summer double crop, as there is growing potential for profit. While attempting... H. Lovewell, B. Finch, R. Sharry , M. Smith, J. Souza, B. Arnall |
2. Effect of Manure Applications Compared to Commercial Fertilizer for Total Nitrogen in Dryland Winter Wheat (Triticum Aestivum L.)The Magruder plots are one of the staples in research agriculture not only in Oklahoma but across the country. The historic data gathered from the Magruder Plots allows for the analysis of long term data sets in excess of 124 years of data. The Magruder treatment structure allows for the comparison of the added benefits of manure applications as compared to inorganic sources of fertilizers. Manure applications were made once every four years as a total nitrogen source compared to annual... B. Arnall, R. Singh, R. Sharry |
3. Nitrogen Management of Cotton Following Corn in the High PlainsNitrogen (N) management in cotton (Gossypium hirsutum) is challenging given physiological dynamics in an indeterminate crop. Cotton performance may be harmed due not only to under fertilization of N, but also excessive fertilization. This is especially pertinent when managing cotton for earliness. Often these challenges occur in the form of delaying the onset of reproductive structures due to the crops indeterminate nature, leading to problems associated with "finishing"... R. Sharry, M. Smith, B. Arnall |