Agronomic evaluation of Indian mustard (Brassica juncea L.) under different crop geometry
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Date
2023-07
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CCSHAU, Hisar
Abstract
A field experiment was conducted during rabi season of 2022-23 at Research farm, Department of Agronomy, CCS HAU, Hisar, to study effect of different crop geometry and varieties on Indian mustard. The experiment was laid out in factorial randomized block design with three replications. It consist of four spacings (30 x 15 cm, 30 x 20 cm, 45 x 15 cm and 45 x 20 cm) and four varieties/genotypes (RH 725, RH 749, RH 1424 and RH 1974.The plant height, LAI, dry matter accumulation and dry matter partitioning significantly increased with increase in spacing maximum was recorded with spacing 45 x 20 cm however, CGR decreased with increase in spacing. Among yield attributes viz., number of siliquae per plant, number of secondary and primary branches, test weight, number of seed per siliqua, seed yield per plant and siliqua length got increased with increase in spacing. Seed yield with 45 x 20 cm increased by 15 %, 12 % and 2 % over 30 x 15 cm, 30 x 20 cm and 45 x 15 cm respectively. Among varieties, genotype RH 1974 recorded highest seed yield which was 30 %, 23 % and 10 % higher than RH 749, RH 725 and RH 1424, respectively along with plant height, LAI, CGR, dry matter accumulation and yield attributes.Physiological parameters viz., relative water content, chlorophyll index, canopy temperature and canopy temperature difference were also more favorable with spacing 45 x 20 cm and genotype RH 1974. Oil content and oil yield also increased with increase in spacing, maximum oil content was recorded with spacing 45 x 20 cm and genotype RH1974.
Maximum gross, net returns and BC ratio were recorded with spacing 45 x 20 cm (Rs 112483/ha, Rs 53631/ha, 1.91 respectively). Among genotypes/varieties gross income (Rs 120511/ha), net returns (Rs 61455/ha) and BC (2.04) ratio was maximum with genotype RH 1974 because of higher seed yield.