NUTRIENT MANAGEMENT
NUTRIENT MANAGEMENT
Application of fertilizers
- Test the soil and apply fertilizers as per the recommendation
- If soil test is not done, apply 25:50:75 kg/ha of NPK fertilizers
- Apply gypsum @ 400 kg/ha on 45 days after sowing
- In calcareous soils, apply 40 kg of elemental sulphur along with 50 kg FeSO4 and 12.5 t FYM/ha
APPLICATION OF MICRONUTRIENTS
Basal
- Apply TNAU MN mixture @ 12.5 kg /ha as enriched FYM (1:10 ratio)
- MN mixture should not be incorporated into the soil, whereas, it should be applied evenly on the soil surface immediately after sowing
Foliar spray with TNAU Groundnut rich
- Foliar spray of TNAU Groundnut Rich @ 5 kg/ha in 500 litres of water at peak flowering (35 DAS) and pod development stages (45 DAS)
Application Of Calcium Sulphate (Gypsum)
- Apply gypsum @ 400 kg/ha at 40-45 days after sowing
- Avoid gypsum application in calciferous soils
Note:
- Gypsum encourages pod formation and better filling of pods
- Gypsum @ 50 % basal reduces Kalahasti malady and pod scab nematode
Combined nutrient spray
- Soak DAP 2.5 kg + Ammonium sulphate 1 kg + borax 0.5 kg in 37 litres of water overnight
- Next day, filter the supernatant solution and make it to 500 litres spray solution for one ha
- Combined nutrient spray at 25 and 35 days after sowing improves pod filling
Irrigation Management
WATER MANAGEMENT
- Irrigate at 0.40 and 0.60 IW/CPE ratio during vegetative and reproductive phase respectively
- Pegging, flowering and pod development stages are critical stage for irrigation (soil moisture deficit at these growth stages severely affect the economic yield of the crop)
- Irrigate as follows:
- Sowing or pre-sowing
- Life irrigation, 4-5 days after sowing
- One irrigation at vegetative stage
- Two irrigations at flowering stage
- One or two irrigations at pegging stage
- Two to three irrigations at pod development stage
Note:
- Sprinkler irrigation will save 30% water.
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