Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
respectively as compared to residue burning plots. Below soil layer (15-30) cm also showed a
similar trend with lower values though the effects were non-significant.
Effect of tillage, residue and nutrient management on total soil organic carbon and its
pools
Treatments/soil
depths (cm)
Tillage (T)
Total soil organic
carbon (SOC)
(Mg C ha -1 )
Very labile
SOC
(Mg C ha -1 )
0-15 15-30 0-15 15-
30
Labile SOC
(Mg C ha -1 )
0-15 15-
30
Less labile
SOC
(Mg C ha -1 )
0-15 15-
30
Non labile
SOC
(Mg C ha -1 )
Active SOC
pool
(Mg C ha -1 )
0-15 15-30 0-15 15-
30
Passive SOC
pool
(Mg C ha -1 )
0-15 15-30
CT 23.06 b 25.30 a 3.98 a 4.38 a 1.76 a 1.93 a 2.79 a 2.72 a 14.46 b 15.84 a 5.74 a 6.31 a 17.33 a 18.99 a
RT 25.89 a 26.40 a 4.89 a 5.02 a 2.36 a 2.37 a 2.87 a 3.14 a 16.07 a 16.39 a 7.05 a 7.30 a 18.85 a 19.10 a
Residue (R)
RR 22.65 b 24.73 a 4.47 a 4.55 a 1.55 b 1.69 b 2.29 b 2.49 b 14.25 b 15.54 a 6.11 b 6.70 a 16.54 b 18.03 a
RB 26.43 a 26.64 a 4.57 a 5.01 a 2.52 a 2.57 a 3.08 a 3.07 a 16.37 a 16.45 a 6.98 a 7.12 a 19.45 a 19.53 a
Nutrient (N)
N1 24.43 a 24.45 a 4.45 a 4.47 a 1.93 a 1.94 a 2.88 a 2.88 a 15.26 a 15.14 b 6.38 a 6.41 b 18.14 a 18.02 a
N2 24.68 a 26.53 a 4.68 a 5.03 a 2.07 a 2.24 a 2.64 a 2.74 a 15.39 a 16.53 a 6.74 a 7.27 a 17.93 a 19.25 a
N3 24.52 a 26.11 a 4.43 a 4.83 a 2.10 a 2.22 a 2.54 a 2.72 a 15.26 a 16.32 ab 6.52 a 7.05 a 17.91 a 19.06 a
Different lower-case letters within same column show significant difference at P=0.05 as per
Duncan Multiple Range test for mean separation
Conclusion
Minimum soil disturbance with residue retention improved soil organic carbon pools whereas
these practices coupled with appropriate nutrient management practice had higher soil
enzymatic activities and microbial count after six years of continuous cropping of sugarcane.
Therefore, these practices should be recommended to sugarcane growers for sustainability of
the cropping system while maintaining the soil resource base.
References
Choudhary, M., Datta, A., Jat, H.S., Yadav, A.K., Gathala, M.K., Sapkota, T.B., Das, A.K.,
Sharma, P.C., Jat, M.L., Singh, R., Ladha, J.K., 2018. Changes in soil biology under
conservation agriculture based sustainable intensification of cereal systems in
indoGangetic Plains. Geoderma 313, 193–204.
Datta, A., Basak, N., Chaudhari, S.K., Sharma, D.K., 2015. Soil properties and organic
carbon distribution under different land uses in reclaimed sodic soils of north-West
India. Geoderma Reg 4, 134–146.
Jat, H.S., Datta, A., Choudhary, M., Yadav, A.K., Choudhary, V., Sharma, P.C., Gathala,
M.K., Jat, M.L., McDonald, A., 2019. Effects of tillage, crop establishment and
diversification on soil organic carbon, aggregation, aggregate associated carbon and
Resource conservation and rainfed agriculture
594 | Page