Abstract
A field experiment was conducted to observe the effect of inorganics, bio-fertilizers and FYM applied to rice-fallow sorghum on soil properties and biological activity at Agricultural College Farm, Bapatla during 2012. Soil samples were collected at flowering and harvest of the crop and were analysed for bulk density (BD), porosity, pH, electrical conductivity (EC), organic carbon, N, P, K and micronutrients by standard methods. Results indicated that the soil properties viz., bulk density, porosity, pH and EC were not markedly influenced by the imposed treatments, while significantly high organic carbon was recorded in FYM treated plots. There was a significant influence of the treatments on available nitrogen and phosphorus, but not on potassium. Among micronutrients (Cu, Zn, Mn and Fe), the treatmental influence was significantly related to Fe only. Addition of inorganics in combination with organics and bio-fertilizers proved to be more efficient in improving the microbial population and enzyme activities (urease and dehydrogenase) significantly.Int. J. Agril. Res. Innov. & Tech. 5 (1): 10-14, June, 2015
Highlights
Continuous adoption of rice - sorghum sequence is a point of concern as cultivation of two cereal crops in a year involves heavy removal of nutrients, which diminishes the soil health and in turn productivity
The present study was carried out to observe the influence of inorganics, bio-fertilizers and well-decomposed FYM applied to rice-fallow sorghum on soil properties and biological activity of soils
Soil samples were collected at flowering and harvest of the crop and were analysed for bulk density (BD), porosity, pH, electrical conductivity (EC), organic carbon, N, P, K and micronutrients by standard methods
Summary
Continuous adoption of rice - sorghum sequence is a point of concern as cultivation of two cereal crops in a year involves heavy removal of nutrients, which diminishes the soil health and in turn productivity. The present study was carried out to observe the influence of inorganics, bio-fertilizers and well-decomposed FYM applied to rice-fallow sorghum on soil properties and biological activity of soils. The EC values of the soil were not significantly influenced by bio-fertilizers and FYM either alone or in combination at different levels of nitrogen.
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