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This publication describes methods that can both prevent and control iron deficiency, from planting and irrigation techniques to trunk injections of iron. Also discusses placement of specific nutrients, factors affecting nutrient availability, and surface accumulations of nutrients. Shows how to estimate the manure generated and forage consumed by grazing animals in order to determine net nitrogen balance. Chapters cover soil erosion, conservation tillage systems and equipment, residue management, plant diseases, weeds, fertility and fertilizers, plant development and ground cover, wheat variety development and alternate crops, erosion control on irrigated cropland, economics, and application of new technology. Learn correct procedure, from sampling timing through sample analysis.