Anais da Sociedade Entomológica do Brasil (2000) 29, 773-782

Alexandre L. Jordão and Octávio Nakano (2000)
Controle de Lagartas dos Frutos do Tomateiro Pelo Ensacamento das Pencas
[Control of tomato caterpillars by means of bunch bagging]
Anais da Sociedade Entomológica do Brasil 29 (4), 773-782
Abstract: The present experiment aimed to reduce the application of insecticides during the cultivation of tomatoes, Lycopersicon esculentum Mill., by protecting the fruits with paper bags. The efficiency of the use of paper bags was evaluated in combination with insect repellents effective against Neoleucinodes elegantalis (Guenée), Helicoverpa zea (Boddie) and Tuta absoluta (Meyrick). Paper bags made of wax paper were chosen, due to their specific characteristics, like resistance, permeability, flexibility, availability in the market and low cost. Two types of repellents were used: deodorant tablets and garlic cloves, which were cut in approximately 90 mm³ pieces. Three assays of the experiment were run, designed in blocks at random. In the first and second assays tomato plants belonged to the commercial variety Santa Clara and in the third to the hybrid Carmen. Five treatments were tested: paper bags containing deodorant tablets, paper bags with garlic cloves, empty paper bags, control without repellent and control with the insecticide metamidophos. Efficiency of the use of wax-paper bags was evaluated by the average number of caterpillars found per treatment. The use of paper bags decreased the number of both species of caterpillars per fruit whether or not associated with repellents. However, the method was not efficient to protect from losses caused by T. absoluta. Therefore, some applications of insecticides will be required for periods of high infestation, even when the fruits are protected inside the bags.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Helicoverpa zea	Tomato (Solanum lycopersicum)
	Phthorimaea absoluta	Tomato (Solanum lycopersicum)
	Neoleucinodes elegantalis	Tomato (Solanum lycopersicum)