Vol. 20 No. 1
Response of black turmeric (Curcuma cassia Roxb.) to organic manures, bio-fertilizers and graded levels of fertilizers under alluvial zone of West Bengal
Author(s): A. SIL AND J. K. HORE
Abstract: An investigation was carried out during 2020-2021 to find out the response of black turmeric to organic manures, bio-fertilizers and graded levels of fertilizers at the Horticultural Research Station (HRS), Mondouri, BCKV, Nadia, West Bengal. Total 13 treatments including control were included in the field trial following RBD with 3 replications. Three levels of inorganic (100%, 75%, and 50% of RDF), four types of organic manures (compost @ 25 t ha-1, vermicompost @ 5 t ha-1, neem cake and mustard cake @ 3 t ha-1 each) and three biofertilizers (Azotobacter chroococcum, Bacillus polymixa and Fraturia aurantia @ 20 kg ha-1) were included. Among the different treatments, maximum plant height, number of leaves,, number of primary and secondary finger, weight of clump and secondary finger, length of clump, breadth of primary and secondary finger, plot yield and projected yield (24.65 t ha-1) were recorded in NPK (100%) + vermicompost + biofertilizer treatment. The plants under NPK (100%) + compost + biofertilizer recorded maximum tiller, breadth of clump, weight and length of primary finger. The yield under control (inorganic) was 18.07 t ha-1. Taking into account the expected yield, the most successful treatment combination was NPK (100%) + vermicompost + biofertilizer followed by NPK (100%) + compost + biofertilizer. The findings revealed a 25% feasibility of reducing the application of inorganic NPK by incorporating organic manure, and biofertilizers in black turmeric cultivation under alluvial zone of West Bengal.
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