Enhancement of Soil Fertility Through Agro Inputs on Response to Cover Crop of Crotalaria juncea L.

Soil is a fundamental natural resource on sustainable agricultural and economic development, to retain the soil fertility by only through various agro inputs. The green-manure crop in agro ecosystem is Crotalaria juncea (Sunn hemp), because it has the ability to produce large biomass, potential to build organic matter levels, to involve in carbon sequestration, to fix large amounts of nitrogen, to reduce soil erosion and to recycle plant nutrients. Knowledge about changes of soil nutrient status in rhizosphere soil and phytochemical characteristics in C. juncea crop is important to understand the soil fertility management. In this present study, a field experiment of C. juncea is performed with compost, chemical fertilizer (Urea and superphosphate) and bioinoculants (AMF, phosphobacteria, Trichoderma viride and Azospirillum sp.) are used individually and combined to investigate the soil nutrient, morphological growth, soil enzymes and phytochemical status are compared. Combined usage of chemical and biofertilizers (T6) proves to be more effective in the soil fertility than the other combinations. In the order of these agro inputs, the importance of green manure for tropical organic cropping for soil fertility is highlighted.