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1. Results from the First Year of On-farm N Rate and Timing StudiesStudies have shown over the past couple of years that utilizing sensor based nitrogen rate calculator (SBNRC) for in-season fertilizer has proven beneficial to yields and protein in the southern Great Plains. However, current SBNRC recommendations and algorithm are based upon trials conducted in central Oklahoma, rather than regionally based. The objective of the larger study is to determine if it is possible to develop a regional dependency component of SBNRC in Oklahoma. For... V. Reed, J. bigatao souza, B. Finch, B. Arnall |
2. Impact of Fertilizer Management on the Stratification of Soil Characteristics in No-tillThe increasing cost of fuel and machinery makes no-till management (NT) a good alternative for producers. With the demanding increase of production, fertilizer utilization efficiency and cycling must be evaluated to address such demand. However, the superficial input of soil amendments under NT may lead to the soil stratification of pH and nutrients and in the first six inches. Three dry-land NT long-term trials located in Perkins, OK (NT since 2005), Stillwater, OK (NT since 2010) and Lahoma,... J. bigatao souza, V. Reed, B. Finch, B. Arnall |
3. Impact of Post-feekes 6 Nitrogen Application in Winter Wheat Forage ProductionProducers have options when choosing how to utilize their wheat acreage in Oklahoma. These include, grain harvest only, dual-purpose grazing and grain, and graze-out where the wheat crop is used solely for grazing cattle. Many producers take advantage of graze out wheat as a forage for cattle during the winter season. With acreages of approximately 400,000 acres of winter wheat grown for graze out production in the state of Oklahoma in 2018, many questions regarding management of wheat for grazing... B. Finch, V. Reed, J. Rogers, J. bigatao souza, B. Arnall |