Khanna, VeenaTabasum, Shaik2019-11-112019-11-112019http://krishikosh.egranth.ac.in/handle/1/5810135004The present work was aimed to evaluate the impact of different tillage systems on soil micro flora and carbon sequestration for two consecutive seasons in rhizosphere of wheat crop. To achieve this objective, rhizospheric soil samples were drawn from different tillage treatments at various crop growth stages from long-term experiment (since 2016) in organically grown basmati rice-wheat cropping system, conducted at Students Research Farm, Department of Agronomy, Punjab Agricultural University, Ludhiana. A total of seven treatments, out of which six were organic and one control i.e., application of recommended dose of agrochemicals were analysed. Organic treatments comprised of different tillage systems, deep tillage (DT), zero tillage (ZT) and conventional tillage (CT) added organic amendment (paddy straw mulch). Different soil physico-chemical parameters soil pH, electrical conductivity, available phosphorous and potassium were significantly increased in conjugation of zero tillage with organic amendments. Microbial and different enzyme activities did not differ much. Carbon sequestration parameters, soil organic carbon and basal soil respiration, increased with incorporation of organic amendments, especially in zero tillage compared to conventional and deep tillage. Root parameters such as root length, root diameter and root biomass, were not influenced by tillage types. However, ZT observations were higher than DT and CT.ennullThesis