Water Management in Horticultural Crops (1+1)

Ground water Recharge

• Of the annual rainfall of 400 mham, about 215 mham infiltrates into the soil.
  
• About 165 mham is retained as soil moisture.
  
• Water in excess of field capacity percolates down and adds to ground water.
  
• About 12.5 per cent of the total precipitation infiltrates into the ground water table.
  
• Thus, out of 215 mham that infiltrates, only about 50 mham percolates into water table.
  
• In course of time due to improved technology the contribution to groundwater from rivers and streams will be the order of 60 mham.