MANEJO BIOLÓGICO DE TRIPES EM CEBOLA NO CERRADO DE GOIÁS

Abstract

Onions are the third vegetable of economic importance, being widely cultivated for fresh consumption, as a condiment or in industrialized form. Onions in Brazil stand out alongside potatoes and tomatoes, as the most economically important vegetables, both for the volume produced. As for the income generated, Onion crops in the state of Goiás, Brazil, generates high incomes and hundreds of direct and indirect jobs, especially during planting and harvesting times that are mixed by mechanized and manual activities. Thrips tabaci (Thysanoptera: Thripidae) is a barrier to onion production in Brazil. The experiment was conducted under field conditions, from March to July of the 2017 harvest, located at the following coordinates: 17 ° 20'19 ”S 47 ° 50'01” W, at Paineiras Farm, located in Campo Alegre de Goiás (GO), Brazil. The cultivar Soberana (Allium cepa) (Liliaceae) was used in the experiment. For the experiment five treatments were used: (T1) Beauveria bassiana; (T2) Orobor ™ N1; (T3) Potassium Silicate (Si); (T4) Beauveria bassiana + Si; and (T5) without applications (absolute control). Arthropod count evaluations in onion plants were performed every 15 days after sowing and will last until the 120th day after sowing (DAS), totaling 8 evaluations during the onion cycle. The Orobor ™ N1 product has the potential to control thrips in onion crops. Other alternative control methods, beyond insecticides, such as Silicon and Beauveria have the potential to add good yields in onion, both in quantity and quality.