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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. Nutrient Cycling Following Cover Crop Termination in Texas Cotton ProductionCover crop adoption on the Texas High Plains (THP) is severely limited compared to other agricultural regions in the U.S. Cotton producers on the THP consistently site water limitations as the primary reason for not implementing cover crops in their cropping systems. Previous research on the THP has shown that nitrogen immobilization following cover crop termination might be the most leading consequence of cover crops, not water availability. A study was initiated into existing long term... J.A. Burke, K.L. Lewis, J.L. Foster |