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1. Nutrient Distribution and Uptake: Homogeneous Vs. Heterogeneous Fertilizer BlendsApplication of concentrated boron (B) fertilizers is potentially a problem for crops with a narrow root cylinder as some plants may receive the B while others are not in close enough proximity. The objective of this trial was to evaluate a low concentration B fertilizer in a variety of crops. Uptake of B was measured and compared to known B sufficiency levels. Crops with a relatively narrow root cylinder diameter (Kentucky bluegrass turfgrass, onion, carrot, and alfalfa) that were fertilized with... J.D. Ioannou, B.G. Hopkins |
2. Stacking Nutrient 4Rs on Potato and WheatThe 4 Rs of nutrient management are a set of research-based guidelines for farmers to use when applying fertilizers to their crops. The aim of the 4 Rs is to improve the sustainability of major cropping systems and the environment without compromising crop yield and quality. The objective for this project is to evaluate individual and stacked 4 R management practices and how they intersect. We conducted this experiment on a Russet Burbank potato crop grown at a field near Grace, Idaho in 2020.... S.H. Stapley, N.C. Hansen, M.A. Yost, E.A. Woolley, B.G. Hopkins |
3. 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 |
4. Effect of Seeding Rate on Annual Warm Season Forage Yield and Plant StructureDue to the decline of the Ogallala Aquifer and reduced irrigation capacity, there is growing interest in more water-efficient cropping systems in the semi-arid central Great Plains. To support the region’s livestock industry, there is increased interest in forages because they use water more efficiently than grain crops. However, there is insufficient information on summer annual forage seeding rates in the range of environments encountered in the region. The objective of this study was... J. Holman, N. Detter, A. Obour, P. Tamea |
5. Phosphorus and Potassium Impacts on Field Crop Production in the Intermountain WestMacronutrients such as phosphorus (P), potassium (K), and sulfur (S) are essential nutrients often required in large quantities for optimal plant growth, with fertilizers typically supplementing soil nutrients. Fertilizer recommendations can vary significantly depending on the source and greatly affect crop profitability. Guidelines in Utah and many other states in the region were developed decades ago and need to be reassessed. Current Utah State University (USU) Guidelines identify 15 mg kg-1,... M. Baker, M.A. Yost |