Controle químico de artrópodes-praga em tomateiro estaqueado

Abstract

The tomato crop, Solanum lycopersicum L., has its center of origin in South America and is one of the most cultivated plants in Brazil and worldwide. Its fruits in nature are part of the daily diet of most Brazilians, and when beneficiaries, can be transformed into various other products. Pests are an obstacle in increasing crop production especially the dispersal capacity of the insects, replication and virus transmission. Aiming to expand the possibilities of control, this study aimed to evaluate insecticides for vector control viruses, miners leaves and fruit borers in staked tomato. The experiment was conducted in a commercial area in the town of Ubajara-CE where the plants were transplanted obeying the spacing of 0.5 m between plants and 1.0 m between rows. The treatments were: T1 = water (control), T2 = Chlorfenapyr 6,3mL / 5L water, T3 = Clorantraniliprole 1 mL / 5L water, T4 = Chlorfenapyr 5,3mL Thiamethoxam + 1.3g / 5L water, T5 Chlorfenapyr = 9.5 mL / 5L water, T6 = Clorantraniliprole 1.4 mL + Thiamethoxam 2.3 g / 5L water, T7 = Chlorfenapyr 6.3 mL + Foliar fertilizer 5 mL / 5L water, T8 = Foliar fertilizer 5.0 ml / 5 l water, T9 = Acetamiprid and Alpha-cypermethrin 6.3 mL / 5L water and T10 = Not applicable. The products were applied using a backpack sprayer 20 liters of water with pH adjusted to 5.0 to 5.5. Four applications were conducted at intervals of seven days starting on 04/09/2015. They were carried out two previous evaluations for initial finding of pests and other 12 ratings (1, 5 and 7 days after each application) in order to monitor pests. For evaluations adopted the white background tray beat and direct visualization of arthropods and / or their injuries. Overall and considering the evaluated pests [viruses vectors (whitefly, aphids and thrips); miners sheets (fly-miner) and fruit borers (pinworm tomato, large-borer and small-borer of fruit)] were no significant differences between treatments.