Enhancing growth and yield of Indian Mustard (Brassica juncea L.) through different moisture regimes and microbes
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Date
2023
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RPCAU, Pusa
Abstract
A field experiment entitled “Enhancing growth and yield of Indian Mustard (Brassica juncea L.) through different moisture regimes and microbes” was carried out during rabi season of 2022-23 at Agricultural Research Farm, TCA, Dholi (Muzaffarpur), a campus of Dr. Rajendra Prasad Central Agricultural University, Pusa (Samastipur), Bihar (India). The treatments included various irrigation levels (M1-No irrigation, M2-Irrigation at flower initiation stage [35 DAS] and M3-Irrigation at flowering [35 DAS] and siliqua formation stage [65 DAS]) in main plots and different microbial inoculants (S1-MRD 17, S2-MKS 6, S3-Biophos and Biophos+, S4-CRIDA MI-I, S5-CRIDA MI-II and S6-Control) in sub plots. The split plot design comprised three replications of the treatments. The soil collected from the experimental site was sandy loam in texture and had an alkaline nature with a pH of 8.23, low in organic carbon, available nitrogen and potassium and medium in phosphorus. The Indian mustard variety named 'Rajendra Sufalam' was sown with a seed rate of 5 kg ha-1 with RDF at a spacing of 30 cm x 10 cm. The objectives of the present study were to evaluate the effect of moisture regime and microbial application on the growth and yield of Indian Mustard, to work out the water-use-efficiency in Indian Mustard under irrigation and microbial population and to work out the economics of different treatments.
Under various irrigation levels, two irrigation at flowering (35 DAS) and siliqua formation stage (65 DAS) of Indian Mustard recorded higher growth and grain yield as well as higher oil content and greater water-use-efficiency and also recorded higher gross return (₹106159 ha-1), net return (₹ 61104 ha-1) and B:C ratio (1.36) as compared to other treatments.
Among the different microbial inoculants, CRIDA MI-II recorded superior impact over other microbial inoculants in terms of growth and yield attributes and yield as well as higher water-use-efficiency of Indian Mustard. In terms of economics of Indian Mustard, CRIDA MI-II reported maximum gross return (₹ 104525 ha-1), net return (₹ 60517 ha-1) and B:C ratio (1.37) as compared to other treatments.