Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Agriculture and Rural Development Soil and Water Conservation Fertilisers
The chemical fertilizer is essential for better rhizobial nitrogen fixation is
1
Calcium
2
Phosphorus
3
Sodium
4
More than one of the above
5
None of the above