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C.M.
Parihar, M.R. Yadav, S.L. Jat, A.K. Singh, B. Kumar, S. Pradhan, D. Chakraborty, M.L. Jat, R.K. Jat, Y.S. Saharawat, O.P. Yadav. 2016. Soil and Tillage Research. 161: 116-128.
http://dx.doi.10.1016/j.still.2016.04.001
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This study evaluated
two resource-conserving agriculture systems in Ethiopia after 7 years of inception. DER is a bed and furrow system where the beds remain unplowed and 30% residue retained. TER is ploughed once at planting, furrows made 1.5 m wide to create fresh broad beds
and 30% residue retained. TER and DER were compared with conventional tillage -- three tillage operations and complete removal of residues. Various soil property measurements were made. Among the several assessed soil properties, soil organic C (SOC), total
soil N, available P, soil microbial biomass C (SMBC), time of ponding, aggregate stability index (SI), consistency index (CI), cone index, air capacity and macroporosity were shown to increase significantly in soils subjected to DER+ planting system compared
to CT. On average, crop yields under DER+ and TER+ increased by 30 % and 16 %, respectively, as compared to CT. They suggest that some incentives should be provided to facilitate larger adoption by farmers.
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