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Studies on the testing methods for available soil phosphorus and soil fertility in the paddy field of Kao-Ping district


, : Studies on the testing methods for available soil phosphorus and soil fertility in the paddy field of Kao-Ping district. Taiwan Agriculture Quarterly 11(1): 73-84

In pot trials, uptake of inorganic P by rice seedlings was correlated with soil P complexed with Al or Fe. There was a significant negative correlation between P and Ca contents of rice seedlings and a positive correlation between soil available Ca and plant Ca contents. In 20 types of soil there were significant correlations between soil OM, P, K and Ca contents and plant N, P, K and Ca contents, respectively.

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