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Chemical Control of Rice Tungro Disease
1. Incorporate Carbofuran 3 G @ 30 to 35 kg/ ha or Phorate 10 G @12 to 15 kg / ha of nursery in top 2-5 cm layer of the soil before sowing sprouted seeds. If such incorporation is not possible, broadcast the recommended insecticides 4 to 5 days after sowing in a thin film of water and allow this water to seep completely.
2. For protection of transplanted crop, foliar spraying with Monocrotophos 36 EC @ 1.0 L/ ha or Carbaryl 50 WP @ 2.0 kg/ha or Phosphamidon 85 WSC @ 0.65 L/ha on 15th and 25th day after sowing, depending on green leafhopper population will control the disease.
3. Usually gall midge and stem borer also appear in the field along with green leafhoppers as a complex during later crop growth stages, in such a situation, Carbofuran 3 G @ 25 kg /ha or Phorate 10 G @ 7.5 kg /ha may be applied 10 days after planting.