“Impact of INM modules on soil quality and productivity of mustard crop (Brassica juncea L.) in Vertisols”.
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Date
2023-12-29
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Deptt. of Soil Science & Agril. Chemistry Banda University of Agriculture & Technology, Banda
Abstract
A field experiment entitled “Impact of INM modules on soil quality and productivity of mustard crop (Brassica juncea L.) in Vertisols” was conducted at CoA research farm, Banda University of Agriculture and Technology Banda (Utter Pradesh) during two successive rabi seasons of 2021-22 and 2022-23. The experiment was laid out in randomized block design and consisted of 15 treatments of different INM combination and replicated three times. The mustard var. RH-0749 was taken as a test crop. Physical properties of soil like bulk density (1.32-1.34 Mg-3), particle density (2.62-2.68 Mg-3), porosity (49.52-50.55 %), and physico-chemical properties like soil pH (7.52-7.83) and EC (0.18-0.21 dSm-1) did not affected up to the level of significance due to INM treatments. After two year of experimentation soil of experimental field was low in organic carbon (0.37-0.38%), total carbon (1.39-1.43 %), total nitrogen (.078-.107 %) medium to high in available phosphorus (16.41-25.20 kg ha-1), high in available potassium (280.26-312.96 kg ha-1) medium to high in available sulphur (9.51-13.88 mg kg-1) and high in available Zn (0.75 ppm). The experimental results indicated that application of 100% RDF+5-ton FYM+ Bio-consortia+ Nano Zn, (T7) significantly increased plant height, dry matter accumulation plant-1, leaf area index plant -1, number of branch plant -1, number of siliqua plant -1 and number of seeds siliqua-1 thereby seed yield of mustard increased significantly over to control (T1). Reduction of 25 % of RDF along with FYM and bio consortia + Nano Zn, had similar results (T14 and T11). Significantly highest N, P, K, S and Zn content in seed and stover as well as oil and protein content and total oil yield of mustard was recorded (100% RDF+5-ton FYM+ Bio-consortia+ Nano Zn) in T7 treatment. Significantly higher N, P, K, S and Zn uptake by seed and stover was also registered on at par treatments T7 were T14 and T7. The application of inorganic and organics source of nutrients INM brought significant improvement in agronomic efficiency, recovery efficiency, physiological efficiency and partial factor productivity of mustard.
Overall, the study recommends, addition of FYM (5 t ha-1) and bio consortia with 100% RDF to mustard crop during both the years for higher productivity and to sustain the soil fertility. As 75 % RDF with FYM and bio consortia + Nano Zn also performed better than the other treatment except T7. Thus, Long-term studies on INM with various sources of nutrients is required in order to monitor changes in soil properties and reduce fertilizer dose across a wide range of ecologies.
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Gaur A. Singh, (2024).“Impact of INM modules on soil quality and productivity of mustard crop (Brassica juncea L.) in Vertisols”Thesis Ph.D. Banda University of Agriculture & Technology, Banda.