Vertical Variability of Physical Properties under Different Land - Use Practices in Vertisols and Inceptisols of Central India

A study was carried out after harvest of rabi season crop during 2020-2021 to find out the vertical variability in status of physical properties in Vertisol and Inceptisol under different land uses. Samples were collected in triplicate from six different land use practices (forest, uncultivated, soybean-wheat, rice-wheat, soybean - chickpea and maize-wheat) at four depths (0-15, 15-30 30-45 and 45-60 cm) Gwalior and Jabalpur regions. For statistical analysis of data in factorial RBD different soil type were considered as factor A ,land use practices as factor B and three replications. Physical properties significantly affected by soil type. It was observed in different land use practices significantly affected in WHC. Under different soil type content of sand, silt and bulk density were higher in Inceptisol as compared to vertisol, however content of clay, porosity and (water holding capacity) WHC were higher Vertisol as compare to Inceptisol. WHC, bulk density and clay was found increased down the depth except porosity, sand in Vertisol while content of sand and bulk density was found increased down to depth except WHC, porosity and clay in Inceptisol.

Effect of Inorganic and Integrated Long-term Nutrient Management on DTPA-extractable Micronutrients in a Vertisol under Soybean-wheat Cropping System across the Soil Depth

The status of DTPA extractable micronutrient (Zn, Cu, Fe and Mn) in response of continuous application of different inorganic and organic fertilizer combination in a 48 years old ongoing long-term fertilizer experiment (AICRP-LTFE) were investigated in Vertisol at Department of Soil Science, and Agricultural Chemistry, JNKVV, Jabalpur under intensive cultivation of soybean- wheat cropping system in 2021. The treatments selected for the study were: control (T1); 100% NP(T2); 100% NPK (T3); 100% NPK+FYM (T4); 100% N(T5); 50% NPK (T6); 150% NPK (T7). Application of FYM along with balance fertilizer (100% NPK) significantly increased the micronutrients availability in soil. On contrast, Imbalance fertilization caused a lower level of micronutrients in soil even below to the critical limit in case of zinc. A decreasing trend with increase in soil depth irrespective of type of nutrient management and micronutrient type was evident in the study. Findings of the present study emphasized the application of balance fertilization along with organic sources like FYM for sustaining micronutrients availability in Vertisol under soybean-wheat cropping system.