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Nitrogen phosphorus and potassium uptake in groundnut at various stages of plant growth and levels of phosphorus

Chahal, R.S.; Singh, S.; Singh, M.

Indian Journal of Plant Physiology 26(2): 220-225

1983


ISSN/ISBN: 0019-5502
Accession: 005987141

A greenhouse experiment was conducted to study the N, P and K uptake in groundnut at various stages of plant growth and levels of P. Soil used for the study was non-calcareous Typic Torripsamments, low in available N, P and K. The highest concentration of N, P and K was accumulated in the shoot portion at early and mid-flowering stages. About 63% and 66% of total N and P were absorbed before mid-flowering, 100% of K was absorbed within 75 days of plant growth. Application of P resulted in significant increase in dry matter yield and N and P absorption in various plant parts of groundnut. N:P ratio observed was wider (11.6:1 to 7.0:1) in shoot as compared to kernels (2.9:1 to 3.3:1). It decreased with P application in shoot but did not change in the kernels.

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