Assessment of the IMPULSE' project

Management of phytophagous bugs in vegetable crops

Assessment of the IMPULSE' project
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Within the framework of the national IMPULsE1 project, the CTIFL and its partners have studied different means of protection against plant bugs in protected tomato and eggplant crops as well as open-field cabbage crops. Beneficial insect parasitoids and predators, anti-insect nets, guardian plants and biocontrol products are the avenues that have been studied so far, with some promising results.

Published 01/03/2021

Estimated reading time: 17 minutes

Agronomic context and presentation of the project

Plant-feeding bugs constitute an important technical barrier in market gardening because there are few or no registered plant protection products (conventional or biocontrol) to ensure their control. In addition, the few registered products (pyrethroids) have harmful effects on the beneficial insects used for the management of other pests (whiteflies, thrips...). Insecticide treatments aimed at bugs disrupt the beneficial fauna, causing the outbreaks of pest populations such as thrips on eggplant, or whiteflies on tomato. The aim of the IMPULsE project was to provide solutions to growers for the management of three pest/crop complexes: Nesidiocoris tenuis on tomato, Nezara viridula and Lygus sp. on eggplant and Eurydema sp. on cabbage.

A first article assessed the project mid-term [1]. The results on the use of insect-proof nets in protected eggplant crops, and yellow dry-glue sticky cards for trapping and monitoring Nesidiocoris were presented. The IMPULsE project also proposed to refine the biocontrol solutions, and the combination of the already existing protection levers with those studied in the project. Finally, the use of agro-ecological management strategies with trap and indicator plants was tested for the management of different bugs in protected and open-field crops.

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