Abstract

The usage of insecticidal plants and others insect resistant varieties can be strong allies to the Integrated Pest Management (IPM), being able to reduce the number of insecticides applications and to minimize its effect to the man and the environment.The following control techniques were compared in field conditions, investigating the late pest control of two determinate tomato cultivars: a) Conventional - sprayings of metamidophos, buprofezin, acephate, cipermetrin, abamectin, permetrin, teflubenzuron and lufenuron, applied every three to six days; b) IPM - action threshold of each pest to the spraying of imidacloprid, triflumuron, lufenuron and abamectin; c) IPM - Azadirachta indica (neem) - Action threshold of each pest to the spraying of the nim oil (1.2% of azadirachtin) at a concentration of 0.5%. The IPM and IPM - Neem control techniques were efficient controlling the late pest of the tomato cultivar, not differing from the conventional treatment that presented the lowest levels of infestation. The conventional control technique, IPM and IPM-neem promoted bigger tomato production with increasements of up to 74%. The number of sprayings was reduced up to 77% with the IPM and IPM - neem techniques, when compared to the conventional method. The neem product may be a promising alternative to the late pest control in the tomato field that adjusts to the IPM.

Highlights

  • In the tomato culture it is common to perform systematic application of phytosanitary products based on calendar spraying, taking into account only the residual activity of the products, without monitoring occurrence of pests or any level of damage to the culture

  • The isolated control techniques with phytosanitary products have not proven themselves effective, making it necessary to search for other strategies that make leading to sustainable results, and to monitor the pest insect populations (Gravena, 1984; Malta, 1999)

  • The Integrated Pest Management (IPM) and IPM-neem control techniques were as effective as the conventional technique when controlling the three late season pests in a tomato cultivar of determinate growth (Table 3)

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Summary

Introduction

In the tomato culture it is common to perform systematic application of phytosanitary products based on calendar spraying, taking into account only the residual activity of the products, without monitoring occurrence of pests or any level of damage to the culture. In the determinate tomato culture, late season pests such as the small borer, Neoleucinodes elegantalis (Guenee), the big borer, Helicoverpa zea (Boddie), and the tomato leafminer, Tuta absoluta (Meyrick) have contributed to the frequent use of broad spectrum insecticides. This has been pushing the scientific community to develop Integrated Pest Management (IPM). The isolated control techniques with phytosanitary products have not proven themselves effective, making it necessary to search for other strategies that make leading to sustainable results, and to monitor the pest insect populations (Gravena, 1984; Malta, 1999)

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