Effect of NPK Fertilizer Levels on Mineral Nutrition and Yield of Hybrid (Tall x Dwarf) Coconut

Abstract

A field experiment was conducted at Coconut Research Station, Veppankulam during 2006-09 to asses the nutritional requirement of hybrid coconut (T x D) with 50 per cent nitrogen (N) substitution through organic manure. The experiment was conducted in 35 years old hybrid (T x D) palms (VHC 2). The experimental results proved that in hybrid coconut, a fertilizer level of 1000:250:2000 g NPK / Palm / year along with 50 kg of organic manure (Composted Coir Pith/ Vermi Compost) achieved economically higher mean annual nut yield, besides sustaining the soil fertility. While, the soil available NPK and index leaf NPK content was the highest at 1000:500:2000 g NPK/Palm / year. Considering consistent nut yield and sustainable soil health, 50 per cent of recommended N may be supplied through organic manure viz., vermicompost or composted coir pith and remaining 50 per cent N may be supplied through fertilizers. The organic manure that carries 50 per cent nitrogen can add organic matter to some extent in organically poor coastal coconut soils.

DOI

https://doi.org/10.29321/MAJ.10.100021

Pages

87 - 91

Creative Commons

Copyright

© The Author(s), 2025. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

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