Generally, 8-9 irrigations are required for the crop season. After the crop is established, it is necessary to withheld the irrigation for about 25 days and create stress which will encourage early flush of heavy flowering, root development, nodulation and checks excessive vegetative growth. The first irrigation should be given immediately after sowing the crop. The second irrigation is given when the flowering is observed in 50 % plants. During pegging and pod filling, the irrigation should be given at an interval of 8-10 or 10-12 days. Fifty to eighty (50 – 80) days after sowing are most critical period and during this period there should not be a water shortage because peg penetration, pod formation take place during this period.
What are the critical stages in groundnut for irrigation?
