INFLUENCE OF CONSERVATION AND CONVENTIONAL TILLAGE ON SOIL QUALITY AND ROOTING BEHAVIOUR OF COTTON IN VERTISOLS.
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Date
2023-01-12
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Dr. Panjabrao Deshmukh Krishi Vidyapeeth Akola, Maharashtra
Abstract
The present investigation was conducted during the year 2021-22 with view to study the “Influence of conservation and conventional tillage on soil quality and rooting behaviour of cotton in Vertisols” at Research farm, Department of Soil Science and Agricultural Chemistry, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola with objectives to assess the influence of conservation and conventional tillage on soil quality and rooting behaviour of cotton and to study the influence of conservation and conventional tillage on the yield of cotton.
The field experiment comprised of two sets each of conservation and conventional tillage practices and eight nutrient management treatments were imposed in both sets of tillage. In conservation tillage (CNS) one harrowing and two hand weeding were followed. In Conventional tillage (CNV) one ploughing (once in two years), one harrowing, two hoeing and two hand weeding operations were carried out every year. The eight treatments of nutrient management consisting of control, 100 per cent RDF and use of chemical fertilizer along with organic source of nutrient in which 50 per cent N applied through organic sources (FYM, wheat straw, green leaf manuring, cotton straw, vermicompost) and 100 percent p applied through phoshphocompost, and remaining N was applied through chemical fertilizer weregiven.The soil samples were collected at the start of experiment and after harvest of cotton and analyzed for chemical and biological properties of the soil. Plants samples were uprooted and analysed for root length and root volume. The treatment wise seed cotton yield wasrecorded.Based on the results generated, the use of organics viz. FYM, glyricidia, vermicompost and phosphocomopst in conjunction with chemical fertilizers recorded significant impact on chemical properties viz soil organic carbon, available sulphur and available Zinc, Iron under conservation tillage.
The biological properties viz. SMBC, SMBN, CO2 evolution and were also improved under INM treatments comprising use of FYM and vermicompost in combination with 50 % RDF as compared to sole use of chemical fertilizers and control under conservation tillage. The use of Phosphocompost, vermicompost, FYM and glyricidia green leaf manuring were found to be beneficial for increasing seed cotton production and uptake of nutrients under conservation tillage. The available, phosphorus, potassium and in micronutrient copper, manganese and total uptake of macro and micronutrient along with rooting behavior of cotton were also studied and found non-significant under conservation tillage with use of FYM, phosphocompost and vermicompost.
Hence adoption of different organic sources, especially Phosphocompost, FYM and Vermicompost under conservation tillage is found to be beneficial for enhanced soil properties and higher productivity of cotton in Vertisols.
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MAGDUM, ASHISH APPASAHEB. (2022). Influence of conservation and conventional tillage on soil quality and rooting behaviour of cotton in Vertisols. Department of Soil Science and Agricultural Chemistry, DrPanjabrao Deshmukh Krishi Vidyapeeth, Akola. M. Sc. Print. xv, 123p.(Unpublished).