Guru GyaanAgroStar Agronomy Centre of Excellence
Let’s know: recommendations made by Guj. Agril. Uni. for tomato fruit borer !
• Farmers cultivate tomato almost round the year. • There is only one caterpillar which is responsible in devastating the crop production, i.e. fruit borer • The caterpillars exists in different colours and polyphagous in nature, they feed on number of crops. • Tomato crop cultivated near by the pigeon pea or chickpea fields are more subjective to damage caused by these caterpillars. • A caterpillar damages more than one fruit, even a small number of larvae cause huge economic damage. • Farmers are adviced to monitor the infestation of fruit borer from 3rd to 18th weeks after transplanting tomato crop for timely management of fruit borer. • Raise yellow flower marigold plants around the crop periphery and also each after 5 to 10 rows of tomato crop as trap crop. Female adult prefer to lay eggs on marigold flowers rather than the tomato plants. In this way, we can save our crop against this pest. • Uni. also recommended for installing the pheromone traps @ 40 per hectare for mass trapping on initiation of the pest. Under organic farming; spray HearNPV (1.0 x 109 POB/ml) @ 250 ml/ha (5 ml/ 10 lit water) or Beauveria bassiana (1 x 108 cfu/g) @ 1.0 kg/ha (20 g/10 lit water) or Metarhizium anisopliae (1 x 108 cfu/g) @ 1.0 kg/ha (20 g/10 lit water) for suppression of fruit borer. • On referring to the recommendation of NAU; farmers are advised to apply two sprays of flubendiamide 20 WDG @ 2.5 g/10 lit or chlorantraniliprole 18.5 SC @ 3.0 ml/10 lit; first at the time of flowering and second at 15 days after first spray for obtaining higher yield and better return. Further, the residue content of these insecticides remained below MRL in tomato fruits after three days. • Looking to the past recommendation of GAU, methyl-o-demeton, dimethoate and quinalphos like insecticide are also found effective against this fruit borer. Since these insecticides are not very expensive in total, the cost: income ratio is higher. • In addition, common practices have been practiced by farmers for years such as deep ploughing the field, installing of light trap, spray neem base pesticides, collection & destruction of bigger caterpillars, separation of infested fruits & burying them etc. this has to be done continuously. • In addition, recommendations given by the Govt. of India: one can also go for the spraying of cyantraniliprole 10.26 OD @ 10 ml or novaluron 10 EC @ 10 ml or novaluron 5.25% + indoxacarb 4.5% SC @ 10 ml or chlorantraniliprole 8.8% + thiamethoxam 17.5% SC @ 10 ml per 10 lit of water for the control of fruit borer on need base.
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