How can leaf miner be controlled in groundnuts?
Management. This pest can be managed using cultural control measures, resistant varieties, biological control agents and by spraying chemicals only when the pest population is above the economic threshold level (ETL).
What is the damaging stage of groundnut leaf miner?
Symptoms of damage: Young larvae initially mine into the leaflets, feed on the mesophyll and form small brown blotches on the leaf. Later stages larvae web the leaflets together and feed on them, remaining within the folds. Severely attacked field looks “burnt” from a distance.
What are the pest that attack groundnut?
Caryedon serratus is a serious pest of stored groundnuts, particularly when these are still in their shells. The damage caused is particularly significant when the nuts are destined for confectionery purposes. The translucent milky-white eggs are attached to the pod wall.
Is an alternate host of groundnut leaf miner?
Psoralea corylifolia, an alternate host for carry over of groundnut leafminer [Aproaerema modicella (D.)]
How do you control thrips from Onions?
Use straw mulch to deter thrips. Alternate onion rows with carrot rows. Avoid planting onions near alfalfa, wheat or clover, as these crops can harbor large populations of thrips. Thrips may migrate to onions when these crops are cut or harvested.
Which disease is common in groundnut?
In groundnut, fungi cause seed rots and seedling diseases such as root rot, stem rot, wilts, blight, . pod rot; and foliar diseases such as rust and early and late leaf spots.
Which is an alternate host of red hairy caterpillar?
Alternate hosts of some important pest and diseases.
| Crops | Pest | Alternate host (Weeds) |
|---|---|---|
| Redgram | Gram caterpillar | Amaranthus, Datura |
| Castor | Hairy caterpillar | Crotalaria sp |
| Rice | Stem borer | Echinochloa, Panicum |
| Wheat | Black rust | Agropyron repens |
How do you control white grubs in groundnuts?
Spraying the trees close to the field with Chlorpyriphos 20 EC @ 2 ml/lit of water soon after first monsoon showers for 3-4 days in the late evening hours kills the adult beetles and reduces root grub infestation. Seed treatment with chlorpyriphos 20 EC ( 6.5 to 12.5 ml/kg seed) is found effective.