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1. Effect of Foliar Zinc Application on Durum and Spring Wheat Grain Yield and QualityZinc (Zn) deficiency represents a common micronutrient deficiency in human populations, especially in regions of the world where staple food crops are the main source of daily calorie intake. Micronutrients like Zn also plays an important role in growth and development of plant thereby affecting crop yield and quality. A two-year field trial was conducted at Sidney, Montana, to investigate the effect of foliar application of Zn on yield and grain quality of spring wheat. Zinc treatment included... F. Etemadi, R. Keshavarz afshar, H. He, S. Zhou, Z. Li, C. Chen |
2. Snapshot of Crop Nutrient Balance with Use of a Rye Cover Crop in a Corn-soybean Rotation Under Tile Drainage in Eastern South DakotaThe purpose of this study was to evaluate the effect of using a winter rye cover crop within a corn/soybean rotation (rye seeded every fall and burned down each spring) on drainage water quality, crop nutrient status, and grain yield. Use of a winter rye cover crop to take up available N from the soil profile is a management tool that may help to lessen nutrient movement out of the soil profile while at the same time contributing to improved soil health. Winter rye is very winter hardy... P. Sexton, S. Kumar, S. Osborne, B. Brockmueller, A. Bly, B. Rops, A. Bawa, S. Bauder, J. Mcmaine |
3. Microplastics in Sweet Corn: Polymer Coated FertilizersPolymer coated fertilizers enhance nutrient efficiency and potentially reduce environmental nutrient loss. However, heavy runoff can carry microplastics into waterways and could negatively impact aquatic or terrestrial environments (Alimi, 2018). The objective of this project is to determine the microplastics concentrations in runoff water in sweet corn (Zea mays ‘sweetness’) with various placement methods. The full factorial study design consisted of three fertilizer... B.G. Hopkins, B.T. Geary, C.J. Seely |
4. Microplastics in Urban Landscapes: Polymer Coated FertilizersThe introduction and use of polymer coated fertilizers in urban landscapes has proven beneficial in supplying nutrients with less loss to the environment. However, these have recently come under scrutiny due to concerns with microplastics in the environment (Alimi). The objectives of this study were to determine the microplastics concentrations in runoff water in urban landscapes. The full factorial study design consisted of three fertilizer sources (Uncoated Dry and Coated Dry) with all... C.J. Seely, B.T. Geary, B.G. Hopkins |
5. 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 |
6. 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 |
7. 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 |