Crop Protection - Red Gram

By TamilNadu Agricultural University on 03 Aug 2015 | read
Monitoring for Pest & Disease
Under take survey at every 10 km distance initially at weekly intervals and there after at 10 days intervals.
Record incidence of pod borer on all host crops of the locality.
Field scouting for pests and bio control fauna by extension agencies and farmers once in 7 days should be undertaken to workout ETL.
Two hours light exposure up to 8-8.30 p.m. for pest monitoring through light trap should be undertaken in the field if possible.
Install pheromone traps at a distance of 50 m @ 5 traps/ha.
Use helicoverpa lure and change it after every 20 days. Trapped should be removed daily.

Flowering stage

 Removal and destruction of sterility mosaic affected plants.

Hand picking and jarring on cloth or in bags is effective in a limited way in small areas.

Conservation of predatory spiders and wasps etc.

Installation of bird perches for the predatory birds.

Application of NPV @ 250 LE per ha. on noticing eggs and 1st  instars larvae (2-3 eggs or 1 larva per twigs).

B.t Spray@ O.O7-1.0 kg/ha

Spray of NSKE 5% at pre-flowering stage 3 times at 15 days interval.

Spraying of 0.07% endsulfan (2m1 of35 EC/lit of water) or 0.04% monocrotophos (1 ml of 36 SL/litre of water) or chlorpyriphos 20 EC @ 3.5 ml./1it. of water at 600-1000 lit of spray material per ha. with hand sprayer or 200-300 lit./ha with power sprayer.

Fruiting stage

 HANPV @ 250 LE per ha. on noticing eggs and 1st  instars larvae (2-3 eggs or 1 larvae/5 twigs)

Spraying the crop with 0.04% mmocrotophos or chlorpyriphos 20 EC 3.5 ml/1it. of water or only one time fenvelrate 75 gm a. i./ha. in 600 to 1000 of spray liquid per ha.


Make harvest at the correct maturity time