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1. Soil Acidification of Cultivated Fields in Semiarid Montana: Adaptation and Challenges to RemediationHistorically, soil acidification was not a problem in Montana because the parent material of most cultivated soils exhibited a neutral to an alkaline reaction. However, fertilizer ammonium‐N use (including urea) by farmers has grown tremendously in recent decades contributing to leading to a downward trend in soil pH and with incidences of soil acidity/Al toxicity now beginning to appear. Here we summarize the results from on-farm sugar beet lime trials to remediate soil acidity; seed-placed... R. Engel, C. Jones |
2. Evaluation of Starter Nitrogen Fertilizer Rates for Grain Sorghum Production in the Southern Great PlainsNitrogen (N) is the most essential nutrient for plant growth and is often the most limiting in crop production. Timely applications of N throughout the growing season are critical to maximizing crop yield. Applying N at planting has proven to be an effective practice, giving plants accessible N early on to increase vegetative growth. Although this is commonly practiced in corn production throughout the Oklahoma and Kansas area, little research has been conducted concerning proper N starter rates... M. Thomas, B. Arnall |