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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. Advancing Precision Nitrogen Management in Agriculture: a Multifaceted ApproachAdvancing precision nitrogen management in agriculture involves achieving a balance between maximizing crop yield and minimizing environmental impact. Traditional nitrogen management approaches often lead to inefficiencies, contributing to environmental issues such as nitrous oxide emissions and nitrogen runoff. Significant challenges persist in quantifying factors influencing nitrogen dynamics in the soil-plant-atmosphere system, including landscape positions, soil properties, weather patterns,... W. Guo, R. Karn, K. Lewis |