Organic agriculture is a production system that sustains the health of soils, ecosystems and people. Composting is an important component of organic farming. Bokashi method of composting is a latest method of composting gaining popularity among farmers and scientists. Bokashi compost is an organic amendment prepared by fermentation of organic matter (lactic, acetic, alcoholic, propionic and butyric fermentation) of plant and animal origin, with microbial inoculum that reduce time of preparation resulting in rich source of beneficial microorganisms. In the present study biomineral enriched bokashi composts were prepared from two substrates S1 (Aquatic weed Limnocharis flava) and S2 (Aquatic weed L. flava and banana pseudostem in 1:1 ratio). The substrates were allowed to ferment anaerobically using effective microbial (EM) 1 solution. Three minerals M1 ( Calcium apatite), M2 (Epsom salt) and M3 (Sylvinite) was added to the matured composts at a rate of 2 kg mineral per 100 kg of compost in different combinations. Zeolite was added to all the produced compost at a 0.5 % rate. The produced composts were analysed for their physical properties, electrochemical properties, organic carbon and major nutrient content.
Compost T13 (L.flava + Rock phosphate + Epsom salt + Sylvinite) has reported the highest moisture content, lowest bulk density and highest water holding capacity. T13 was also reported to have high organic carbon and nitrogen content. Phosphorous content was found to be highest in T14 (L. flava and Banana pseudostem + Calcium apatite + Epsom salt + Sylvinite). Potassium content of T14 was found to be on par with T12 (L . flava and Banana pseudostem+ Calcium apatite + Sylvinite) which has the highest potassium content. The lowest C:N ratio was recorded for T13 ( L.flava + Rock phosphate + Epsom salt + Sylvinite). From the study it has observed that the treatments T13 and T14 were found to be the best.