Integrated Nutrient Management in Coconut
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2002-12
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Abstract
A fieid experiment was conducted in the farmers field near Coconut Research Station, Aliyamagar from 1996-2001 to study the effect of various organic manures in coconut. The treatment comprised of farmers practice, 100 % of recommended dose of chemical fertilizers (560: 320:1200 g NP10sK10/palm/year), 100% nutrient supply (on N basis) as composted coir pith, 50% of nutrient supply (on N basis) as composted coir pith + 50 % through chemical fertilizers and Neem cake (10 kg/palm/year) + bone meal (2 kg/palm/yead+ ash (20 kg/palm/year). The results of the study from 1997-98 to 2000-2001 revealed that application of composted coir pith on 100 % N basis per palm/year or application of 50 % of composted coir pith on N basis with 50 % of recommended dose of chemical fertilizers per palm peryear (280: 160: 600 g NPPsKp/palm/year) recorded maximum mean nut yield of 151 and 148 nuts/palm/year respectively. Composted coir pith treatment recorded more leaf N and K content of 2.07 and 1.55 % respectively in the 14th leaf. Hundred per cent composted coir pith and 50 % composted coir pith + 50 % of the recommended dose of fertilizers treatments have recorded more net income and benefit cost ratio of Rs.39350, 37988 and 2.05, 2.00 respectively.
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Proceedings of Placrosym xv (2002): 410-413