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Description - Soil Fertility Evaluation and Control by Charles A. Black

"Soil Fertility Evaluation and Control" describes the theoretical backgroud for practical applications of scientific work on the subject. The book emphasizes the use of response curves as the basic biological standard for both evaluation and control, and discusses soil testing and plant analysis as secondary standards. The principle applications covered include fertilizer requirements, fertilizer evaluation, residual effects, fertilizer placement, liming and economics of fertilization. Environmental aspects of plant nutrients and soil nutrient supplies as they pertain to crop production are also addressed.

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