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Volume 4 Issue 5
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Article Navigation >  Forest Research  > 1991 >  4(5): 578-581

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Study on the Fixation of Sampling Date for Nutritional Diagnosis (N, P, K) of Walnut

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    The Research Institute of Forestry CAF

  • Received Date: 1990-09-12
  • Study on the nutritional indices of three essential elements (N, P, K) of walnut was conducted in Qi County, Shanxi Province from 1986 to 1990. According to the study, the best leaf samples for nutritional diagnosis should be taken, in mid May because the leaves have reached physiological maturity at this time. The analysis of these samples is sure to give the best indices and show the yield of the trees.
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Study on the Fixation of Sampling Date for Nutritional Diagnosis (N, P, K) of Walnut

  • 1. The Research Institute of Forestry CAF
  • Received Date: 1990-09-12
  • Available Online: 2012-12-04

Abstract: Study on the nutritional indices of three essential elements (N, P, K) of walnut was conducted in Qi County, Shanxi Province from 1986 to 1990. According to the study, the best leaf samples for nutritional diagnosis should be taken, in mid May because the leaves have reached physiological maturity at this time. The analysis of these samples is sure to give the best indices and show the yield of the trees.

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