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1. Tillage and Nitrogen Management for Irrigated Sugarbeet Production in Eastern MontanaSugar beet (Beta vulgaris L.) is an important cash crop in the Lower Yellowstone River region. Nitrogen management is very critical while farmers are transitioning sugar beet production from conventional tillage to no-till system. The objectives of this study were to: (i) evaluate the effects of fertilizer-N rate and application timing on sugar beet root yield, sugar content, and quality under conventional and no-till managements, (ii) determine N uptake and N use efficiency (NUE)... A. Sutradhar, W. Franck, R. Garza, C. Chen |
2. 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 |
3. 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 |
4. 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 |
5. Dramatic Soil Health Changes After 18 Years of Different Nitrogen Rates and Cropping Systems in the Northern Great PlainsRelatively few long-term cropping and nitrogen rates studies have been conducted in the semi-arid northern Great Plains that assess soil health changes. A cropping system study was initiated in 2002 in Bozeman, Montana (~400 mm annual precipitation) with wheat grown in even years, and either tilled fallow or one of the following no-till systems in odd years: fallow, wheat, pea grain, pea hay, pea green manure, and an alfalfa-grass (until 2012) followed by pea grain. N was applied at either 50%... C. Jones, P. Miller, C. Zabinski, W. Fouts |
6. 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 |
7. Lentil Inoculant, Potassium, Sulfur, and Micronutrient Effects on Yield and Protein in the Northern Great PlainsLentil (Lens culinaris Medikus) is an important crop, averaging more than 600,000 ac in MT and ND from 2016-20. However, relatively little is known about inoculant and fertility response in lentil in the U.S. northern Great Plains. The objective of this experiment was to evaluate the effect of rhizobial inoculant formulations (granular and seed-coat) and nutrient additions (K, S, and micronutrients), on lentil growth, yield, and seed protein. This study was conducted at six or seven university... P. Miller, C. Jones, S. Atencio, C. Chen, E. Eriksmoen, S. Fordyce, P. Lamb, M. Ostlie, J. Rickertsen, M.A. Grusak, M. Bourgault, B. Franck, P. Carr, S. Koeshall, K. Baber |
8. Evaluation of Summer Forage Tillage Management in Winter Wheat Graze out ProductionThis is a long term study conducted in central Oklahoma evaluating management of a winter wheat graze out system. This study focuses on the impact of the implementation of a summr fallow replacement forage crop into a winter wheat graze out production system, as well as the utilization of tillage management of conventrional tillage versus no-till systems and the impacts on forage production. ... B. Finch, B. Arnall |