Summary
The differences in fertilizer responses between rice plants grown under pot and field conditions were discussed.
Under pot conditions, the rice plant responded more strongly to nitrogen applications at high phosphorus and high potassium levels than at low levels of these elements. This suggests that the balance of nitrogen, phosphorus, and potassium is an important factor in fertilizer application.
Under field population conditions, however, mutual shading among plants limits grain yield. A big leaf area above a certain limit is associated with decreased grain yield. The response to nitrogen may be negative, and may not be changed even with the application of potassium and phosphorus.
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References
Ishizuka, Y. and Tanaka, A., Studies on the nitrogen, phosphorus and potassium metabolism of the rice plant. J. Sci. Soil manure21, 23–28 (1950);22 7–12, 103–106 (1951). (In Japanese, English summary).
Tanaka, A., Patnaik, S. and Abichandani, C. T., Studies on the nutrition of rice plant. Proc. Indian Acad. Sci.47 (B), 140–154 (1958);50 (B), 305–317 (1959).
Tanaka, A., Navasero, S. A., Garcia, C. V., Parao, F. T. and Ramirez, E., Growth Habit of the rice plant in the Tropics and Its Effect on Nitrogen Response. The International Rice Research Institute Techn. Bull.3, pp. 80 (1964).
Tanaka, A. and Kawano, K., Effect of mutual shading on dry matter production in the rice plant. Plant and Soil (In press).
Williams, M. S. and Couston, J. W., Crop Production Levels and Fertilizer Use. FAO, Rome (1962).
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Tanaka, A. Mutual shading as a factor limiting the yield response of rice to application of nitrogen, phosphorus and potassium fertilizers. Plant Soil 25, 201–210 (1966). https://doi.org/10.1007/BF01347819
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DOI: https://doi.org/10.1007/BF01347819