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COIMBATORE: Tamil Nadu Agricultural University has suggested plant protection measures to be undertaken by farmers in this season.
Paddy farmers in Ramanathapuram have been asked to spray chlorpyriphos or profenophos to control caseworm and stem borer that were found to be crossing the Economic Threshold level (ETL). For rice leaf folder crossing the ETL, farmers are advised to spray neem seed kernel extract or profenophos or chlorpyriphos.
Another threat in the form of false smut in Ramanathapuram, Pudukottai and Tiravarur can be handled by spraying propiconozole or carbendazim.
For the incidence of blast disease, spraying of tricyclazole has been suggested.
Farmers in Kanchipuram district, who have observed the incidence of bacterial leaf blight and bacterial leaf streak, are asked to spray copper hydroxychloride.
The prevalence of red rot disease in sugarcane in Sivagangai can be controlled by removing the affected plant and drenching it in carbendazim. Fusarium wilt incidence in Salem and stem rot in Sivagangai can also be controlled by a similar method.
Thanjavur wilt in coconut in Thanjavur can be controlled by root feeding with calixin. Red palm weevil and rhinoceros beetle damage, farmers are advised to install pheromone traps.
In severe cases of red palm weevil, root feeding with monocrotophos is recommended.
To manage papaya mealy bug in papaya, tapioca, mulberry and other vegetable and flower crops, TNAU is mass producing the parasitoid Acerophagus papaya in all its colleges and research stations and Krishi Vigyan Kendras.
Farmers can obtain the parasitoid free of cost and release the same in the mealy bug infested fields.
For details, contact Head, Department of Agricultural Entomology, TNAU, on 0422-6611214; or Head, Department of Plant Pathology, TNAU, on 0422-6611226.
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