Behavior and leaching of fertilizer nutrient in Japanese apricot planting soil
1990
Watanabe, T. | Tanabe, K. | Ogino, K.
After application of nitrogen, potassium and calcium, those content in rhizosphere soil were measured by lysimeter, and the relation between uptake of those in Japanese apricot plant and plant grow was investigated. 1. Increase of trunk circumference and elongation of shoot were large in nitrogen rich and much calcium to potassium (large rate of Ca/K) at the Brown Forest soil or the Yellow soil. Increase of those were very little in nitrogen rich and little rate of Ca/K at the Yellow soil. 2. In application of nitrogen rich and little rate of Ca/K at the Yellow soil, plant growth was little, pH of soil was low, and the content of phosphorus, calcium and magnesium in leaf was low 3. It had a close relation in nitrogen and potassium between amount of those fertilizer application and those content of soil, and those content of leaf. The application of calcium increased that content of soil, but did not increase that content of leaf. The high content of exchangeable potassium in soil induced little elongation of shoot, and the high content of exchangeable calcium in soil induced large elongation of shoot. 4. It had close relation (r=-0.858) between the amount of percolating water from lysimeter and the sum of shoot length.
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