Effects of discontinuation of fertiliser application on the NPK nutrition of coconut palm
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Date
1975
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Abstract
The effect of discontinuing fertiliser application for one year on the NPK nutrition of coconut palms which have been receiving the annual recommended fertiliser dose fcr the last 15 years was studied. High residual accumulation of soil nutrients, especially P and K, was noticed in soil basins consequent 01 the long continued fertiliser application. Discontinuation of fertilisation brought down the levels of N and Kin leaf and exchangeable K ii soil, while soil and leaf P levels remained unaffected. It is suggested that once a good soil build up of P has been attained following annual . . P-application it might be possible to discontinue P-application for certain number of years or readjust the recommended dose by decreasing the quantity of added P without affecting P nutrition of the palm
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Journal of Plantation Crops 3(2) : 58-60 June, 1975