In India, 353 Mt crop stubble annually generated from
rice and wheat crops respectively. About 84 Mt (23.86%) of
the stubble is being burnt on-field by the farmers every year
(Abdurrahman et al., 2020). Use of these unused crop residues
(stubbles) for generating compost, incorporation into
soil, biochar etc. will result in benefit to farmers by enhanced
soil health and to environment by reduced pollution
(Jain et al., 2014). Thus, the paddy straw was used to decompose
it with the help of aerobic composting and the
results are shared in this paper.
It is evident from the above table that rice straw good
source of nutrient. About 40% of the N, 30-35% of the P,
80-85% of the K and 40-45% of the S absorbed by rice
remain in the vegetative parts at maturity. Therefore, one
ton of rice straw contains 5-8 Kg N, 0.7-1.2 Kg P, 12-17 Kg
K, 0.5-1 Kg S, 3-4 Kg Ca, 1-3 Kg Mg and 40-70 Kg Si
(Dobermann and Wilt 2000).with Madhyam culture @ 200 kg cow dung for 1000 kg
biomass. The compost heaps have been irrigated on alternative
days and turning over has been conducted for every 10
days (Chander et al., 2018). The compost samples (KH1 to
18) were analyzed for organic carbon by Walkley black
method and other parameters like N, P, K have been analyzed
by ICPMS
