SOIL QUALITY ASSESSMENT UNDER DIFFERENT CROPPING SYSTEMS IN SUB-HUMID (DRY) ECOSYSTEM OF CENTRAL INDIA
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 53
Abstract
Effect of different cropping systems (CS) on the soil quality (SQ) was assessed for soils of Sub-humid (dry) ecosystem of Central India in Rahat watershed of Nagpur District, India. Forty two surface and subsurface samples were analyzed for two physical indicators viz. bulk density (BD) and particle size distribution; four chemical indicators viz. electrical conductivity (EC), soil organic carbon (OC), Free Calcium Carbonate (CaCO3) and soil available nitrogen (AN). SQ indicators were compared with its value under different CS in three different landforms. The components of each CS highly affects the soil properties viz. BD, clay content, OC and AN. The higher values of BD i.e. 1.31, 1.38 and 1.48 g cm-3 in Citrus + wheat under plateau top landform, sole tur– fallow under pediment landform and cotton–fallow under alluvial landform, respectively indicated the deterioration of the soil physical condition. The cotton–fallow CS also showed highest i.e. 60.59 per cent of clay. The sorghum-fallow CS adversely influenced the chemical environment in case of OC and AN, which showed lowest value (0.57% & 208 kg ha-1, respectively). In alluvial landform, AN content was high in different CSs (278 to 348 kg ha-1). The CSs, which does not add biomass in the soil, resulted in decreased OC and increased BD due to its anti-microbial effect in soil. The adverse impact of these CS on SQ indicators resulted in deterioration in quality of soil. Therefore, such CS should be prevented for long-term cultivation. Appropriate crop rotation with CS Soybean- Wheat-- Sorghum- Gram-- Soybean-Gram-- Sorghum--Wheat for kharif- rabi season in four consequent years should be followed.
Authors and Affiliations
D. S. KANKAL
Keywords
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