Nitrogen Cycle and its Importance in Soil Fertility
24:47
Biofertilizers and their Classification
17:56
Why Nitrogen is Lost From Soil
19:17
Nitrification and its Importance
23:58
Phosphorus Cycle in Soil
25:32
Denitrification and its Effects
5:54
The Nitrogen Cycle!
18:26
Volatilization of Ammonia
22:57