Original Articles: 2011 Vol: 3 Issue: 6
Comparative studies of organic enrichers in the improvement of physicochemical and microbiological characteristics of saline/usar soils
In the present study, for maintaining the saline alkali / usar soils, certain amendments such as farmyard manure (fym) and prepared compost were used. Both the enricher were added separately in the ratio of 5%, 10%, 15%, 20% and 25% (W/W) in air dried and sieved soil samples of saline alkali soils. Different physico-chemical characteristics showed a definite trend of change in values with the increasing concentration of farmyard manure and prepared compost. The values of organic carbon, organic matter, total nitrogen, exchangeable potassium, cation exchange capacity and water holding capacity increased both in farmyard manure and prepared compost. But from this experiment, it is clear that different doses of prepared compost showed better reclamation of saline-alkali soil than farm yard manure (fym). On comparing the efficacy of farm yard manure and prepared compost amended soil on microbial numbers, it can be concluded that prepared compost showed greater improvement in fungal, bacterial and actinomycetes population over the control. It is an indicative of improvement in soil reclamation and management of problem soil. Qualitatively soil microfungi expressed different dominant community members in different doses of amendments as revealed from the data of IVI (individual value index) of individual fungal species.