Pesquisa Agropecuária Brasileira (2005) 40, 715-718

Dirceu Pratissoli, Robson Thomaz Thuler, Gilberto Santos Andrade, Luiz Carlos Marozzi Zanotti and Alexandre Faria da Silva (2005)
Estimativa de Trichogramma pretiosum para controle de Tuta absoluta em tomateiro estaqueado
[Estimate of Trichogramma pretiosum to control Tuta absoluta in stalked tomato]
Pesquisa Agropecuária Brasileira 40 (7), 715-718
Abstract: The objective of this work was to estimate the ideal number of Trichogramma pretiosum Riley to be released in field for the tomato leafminer control Tuta absoluta (Meyrick). An experiment was carried out in a greenhouse, in which tomato plants with 60 days, after the transplantation, were infested with 200 eggs of Anagasta kuehniella (Zeller), an alternative host, in the subsequent ratios: 70% of eggs were put on the top of the plants, 24% on the medium height and 6% on the very bottom of the plants. Females of T. pretiosum were released following the ratios of 1, 2, 4, 8, 16 and 32 parasitoids per host egg. Independently of the three distinct plant parts (top, medium or bottom), the ratio of 16 parasitoids per host egg delivered the best results. This ratio value was closer to the ideal number for field releasing in commercial crop production of stalked tomato, aiming the tomato leafminer control.
(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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Database assignments for author(s): Dirceu Pratissoli

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
application technology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Phthorimaea absoluta	Tomato (Solanum lycopersicum)
Trichogramma pretiosum (parasitoid)	Phthorimaea absoluta	Tomato (Solanum lycopersicum)