9781333331139 - the residual effects of fertilizers (classic reprint) von bear, firman e. (3 Ergebnisse)
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- Softcover
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Paperback. Zustand: New. Print on Demand. This book examines the long-term impact of fertilizers on soil composition, crop yield, and the effectiveness of various treatments over 15 years. The author analyzed soil samples from a series of test plots that had received different combinations of fertilizers, including nitrogen, pho…sphorus, potassium, and lime, and compared them to untreated control plots. The results demonstrate that nitrogen fixation occurred in plots treated with acid phosphate and/or sulfate of potash, with rates varying from 20 to 78 pounds per acre per year. Notably, phosphorus applied to the soil remained fixed in the top 6 3/4 inches, indicating that it was not lost through drainage. Furthermore, the use of fertilizers, particularly complete fertilizers and manure, led to increased organic matter content and decreased soil acidity. In contrast, excessive lime application was found to deplete nitrogen, phosphorus, and organic matter. These findings suggest that judicious fertilizer use can enhance soil health, promote crop growth, and potentially reduce the need for lime in acidic soils. This book offers valuable insights for farmers, soil scientists, and anyone interested in sustainable agricultural practices and soil management strategies. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.
