Figure 4:
Wheat grain yield under the tillage treatements with and without crop residue for the two years: (a) 2012-13, (b) 2013-14 was low under zero tillage without retention of crop residues.
Wheat grain yield under the tillage treatements with and without crop residue for the two years: (a) 2012-13, (b) 2013-14 was low under zero tillage without retention of crop residues.