Decreasing trends of organic matter and plant-available nutrients
in arable soils, other negative consequences of fertilizer inputs
and frequent tillage call for newer techniques in agriculture, one
such technique which has attracted considerable interest is
microbial management. Microbial biomass is a small active fraction
of the soil organic matter which turns over very rapidly, and holds
a large pool of plant-available nutrients. It acts as a source and
a sink of nutrients and is responsive to several agricultural
practices. Soil organic carbon (SOC) has also been identified as a
factor that is important to soil fertility as well as for the
environment because of huge carbon sequestration potential of the
soils. Present study was undertaken to evaluate the influence of
applications of straw and chemical fertilizer on the soil microbial
biomass, available nutrient pools and crop growth under reduced
tillage, dryland conditions. The major hypothesis tested in this
study was that the management practices which can increase the size
of active soil organic pool can enhance the nutrient supply rate
and hence crop growth in drylands under reduced tillage cultivation
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