Journal of FARM SCIENCES, Vol 28, No 4 (2015)

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Effect of integrated nutrient management practices on early growth of young rubber (Hevea brasiliensis) plantation

K.P. Pradeep, K. Manjappa

Abstract


The experiment was conducted during 2014-15 at Harishi village of Uttara Kannada district to investigate the effect of integrated nutrient management practices on early growth of young rubber (Hevea brasiliensis) plantation. The experiment was conducted in factorial randomized block design with three levels of farm yard manure (without FYM, 5 kg FYM/plant and 10 kg FYM/plant) and three levels of inorganic fertilizers (50:50:25; 100:100:50 and 150:150:75 g NPK/plant) with three replications.  Among the different levels of FYM, application of FYM @ 10 kg/plant has recorded significantly higher plant height (136.78 cm), collar diameter (30.54 mm), crown diameter (61.25 cm), number of leaves/plant (46.18) and number of whorls/plant (3.13). Among the different levels of inorganic fertilizers, application of NPK @ 150:150:75 g/plant has recorded significantly higher plant height (131.80 cm), collar diameter (30.31 mm), crown diameter (58.30 cm), number of leaves/plant (44.09) and number of whorls/plant (2.86).  Among the interaction of organic manure and inorganic fertilizers, combination of FYM @ 10 kg/plant + NPK @ 150:150:75 g/plant recorded maximum plant height (143.42 cm), collar diameter (31.89 mm), crown diameter (64.05 mm), number of leaves/plant (47.62) and number of whorls/plant (3.33) compared to all other combinations

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