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1. Nitrogen Management in Small Grains After AlfalfaSmall grains are commonly grown following alfalfa in Utah and the Intermountain West, especially during drought years as small grains require less irrigation than corn. Several studies across the country have shown that corn following alfalfa rarely needs N fertilizer, yet relatively few have evaluated the N needs of small grains. Furthermore, research on the N needs of small grains grown as forage vs. grain are even more sparse. The objectives of this research are to quantify the... C. Pound, M. Yost, E. Creech, G. Cardon, K. Russell, D. Despain, J. Gale, K. Heaton, B. Kitchen, M. Pace, S. Price, C. Reid, M. Palmer, M. Nelson |
2. Fine Tuning Nitrogen Management Soil TestsRecent changes in environmental regulations have brought a renewed focus on residual soil nitrogen. Years ago when much of the N was broadcast or injected into cultivated fields there were relatively simple techniques to make reasonable estimates. In more recent times drip irrigation, fertilization, and non-till have complicated the techniques required to measure residual N. This is especially the case in deep rooted crops. This presentation will discuss using quantitative soil tests... K. Backman |
3. Making N Budgets Work: a CCA View from the Field... K. Backman |
4. Permanent Crops - Nutrient ManagementIn California, environmental regulations are rapidly expanding and moving into new areas of concern at a very rapid pace. Most recent requirements are based primarily on nitrogen and how it fits into a Nutrient Management Program (NMP). CCAs are being asked to assist growers in controlling nitrogen use to reduce/avoid its discharge to the environment. The Regional Water Quality Control Board of California classifies a discharge as lateral movement to surface waters or movement past the root system... K. Backman |
5. Soil and Plant Analysis: How They Fit into a “Green” Nutrient Management ProgramEnvironmental concerns are changing the face of agricultural fertilization across the nation and world. Both nitrogen and phosphorus have become the major concerns in this area with other nutrients, salts, and chemicals being discussed for future regulations. The focus of environmental regulation depends on the characteristics of different geographical regions. Soil, water, and tissue analyses are needed to meet application requirements as regulatory documents are being drafted and implemented.... K. Backman |