On farm validation of management of leaf curl disease of sunflower
On farm validation of management of leaf curl disease of sunflower
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Authors
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K VENKATARAMANAMMA
Regional Agrl. Research Station, ANGRAU, Nandyal-518 503
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K PRABHAKAR
Regional Agrl. Research Station, ANGRAU, Nandyal-518 503
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S NEELIMA
Regional Agrl. Research Station, ANGRAU, Nandyal-518 503
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B V R PRAKASH REDDY
Regional Agrl. Research Station, ANGRAU, Nandyal-518 503
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N C VENKATESWARLU
Regional Agrl. Research Station, ANGRAU, Nandyal-518 503
Keywords:
Leaf curl, Management, Onfarm trials, Sunflower, ValidationAbstract
Leaf curl is one of the important diseases causing huge yield losses in sunflower. One of the best treatments from the 3 year experimentation on management of leaf curl disease was validated in on farm validation experiment along with farmers’ practice. It was concluded that the treatment i.e., seed treatment with imidacloprid 600FS @ 5ml/kg seed + foliar spray with diafenthiuron 50 WP @ 1.25 g/lit at 30 and 45 DAS (days after sowing) recorded less leaf curl incidence of 10.5% and less whitefly population of 1.75. Same treatment also recorded higher yield of 1798 kg/ha and B:C ratio of 2.4 when compared to control, which recorded more leaf curl incidence of 28.5 and less yield of 1500 kg/ha. Hence, it was concluded that diafenthiuron is one of the best chemicals in management of leaf curl disease by acting on whiteflies.
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References
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