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8600623 
Journal Article 
Bioefficacy of diafenthiuron 50 SC (Polo 50 SC) against grapevine pests and its effect on natural enemies and plants 
Balikai, RA 
2007 
31 
5 
50-57 
English 
A field trial was conducted to evaluate the efficacy of Diafenthiuron 50 SC (Polo 50 SC) against grape pests viz., thrips (Thrips palmi Karny and Scirtothrips dorsalis Hood), mites [Tetranychus urticae (Koch.)] and flea beetles (Sceledonta strigicollis Motschulsky) and its effect on natural enemies and vines during 2005-06 at the Horticulture Research Station, Bijapur, Karnataka. Results revealed that, Polo 50 WP @ 600 g/ha, Polo 50 SC @ 600 ml/ha, Polo 50 SC @ 400 ml/ha were highly effective against thrips. Only the lower dosage i.e., Polo 50 SC @ 400 ml/ha was as effective as Dicofol 18.5 EC @ 2500 ml/ha and Standard check (Monocrotophos 36 WSC @ 1000 ml/ha followed by Dimethoate 30 EC @ 1700 ml/ha) which in turn were on par with Phosalone 35 EC @ 2000 ml/ha and Endosulfan 35 EC @ 1000 ml/ha. Polo 50 SC @ 600 ml/ha, Dicofol 18.5 EC @ 2500 ml/ha, Standard check (Monocrotophos 36 WSC @ 1000 ml/ha followed by Dimethoate 30 EC @ 1700 ml/ha) and Polo 50 WP @ 600 g/ha were equaly effective in bringing down the mite population. Only the lower dosage i.e., Polo 50 SC @ 400 ml/ha was as effective as Polo 50 WP @ 600 g/ha and Phosalone 35 EC @ 2000 ml/ha. Polo 50 SC @ 600 ml/ha, Polo 50 SC @ 400 ml/ha and Polo 50 WP @ 600 g/ha were highly effective against flea beetles as compared to any of the treatments. The next best treatments included Dicofol 18.5 EC @ 2500 ml/ha, Phosalone 35 EC @ 2000 ml/ha and Standard check (Monocrotophos 36 WSC @ 1000 ml/ha followed by Dimethoate 30 EC 2 1700 ml/ha). Polo 50 SC @ 600 ml/ha recorded highest yield of 8.94 and did not differ statistically from Polo 50 WP @ 600 g/ha, Polo 50 SC @ 400 ml/ha, Standard check (Monocrotophos 36 WSC @ 1000 ml/ha followed by Dimethoate 30 EC @ 1700 ml/ha), Dicofol 18.5 EC @ 2500 ml/ha and Phosalone 35 EC @ 2000 ml/ha with 8.76, 8.75, 8.72, 8.70 and 8.54 kg/vine respectively. Endosulfan 35 EC @ 1000 ml/ha recorded lowest yield of 7.86 kg/vine and was on par with all other treatments except Polo 50 SC @ 600 ml/ha. 
Diafenthiuron 50 SC (Polo 50 SC); Flea beetles; Grapes; Mites; Thrips