EFFECTS OF NUTRIENT MANAGEMENT ON PRODUCTIVITY OF T. AMAN-MUSTARD (RELAY CROP)-BORO RICE PATTERN

Abstract

An experiment was conducted to find out the effects of different doses of chemical fertilizers along with the integrated use of vermicompost in a three crops cropping pattern [T. aman-Mustard (relay crop)-Boro] and to find out the optimum fertilizer doses of mustard under relay crop and for the cropping system as well at the BINA Sub-station farm, Ishwardi during 2023 to 2024. Mustard was grown as relay crop with T. aman. Six treatments for each of the three component crops were used comprising different doses of NPKS along with or without vermicompost. The experiment was laid out in a randomized complete block design with three replications. In the first crop of the cropping pattern, treatment T3 (100% P from VC+100% NKS from CF as IPNS) produced maximum grain yield (6.5 tha-1) of T. aman rice followed by the treatment T5. In the second and third crop of the cropping system, the treatment T4 (125% NPKS) produced the highest yield. The fertilizer doses (kg ha-1) for the component crops were N75P0K26 S7 VC352, N107P24K54S22Zn2B2 and N161P18K67S13 appeared suitable for T. aman, Mustard and Boro, respectively, based on yield performance and economic analysis.

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