POPULAÇÃO DE TRIPES EM ERVILHA CULTIVADA NO CERRADO DE GOIÁS, BRASIL

Abstract

Studies that address the population of thrips in pea plants are important because these insects are vectors, such as Frankliniella schultzei, of the TSWV virus (Tomato Spotted Wilt Virus) that causes brown pods in peas. And also to better understand its population dynamics in crops that precede and precede pea production in the field, even serving as valuable information for decision-making at the landscape level. The objective of the present study was to evaluate the population of thrips, in terms of species diversity and their abundance, present in peas during an agricultural season (2022). Yellow sticky traps were used for sampling the thrips. Each experimental unit, comprising 2 (two) hectares, had an adhesive trap kept immediately above the upper third of the pea leaves. The total area of evaluation of the samples was 10 hectares, corresponding to 15, 30, 45, 60, 75 and 90 days after planting (DAP) of peas. One family (Thripidae), three genera and four species Frankliniella schultzei, Frankliniella brevicaulis, Caliothrips phaseoli and Arorathrips mexicanus was the result of our sampling, in this order of abundance, respectively. Up to 30 days after pea planting, no thrips species showed outstanding dominance compared to the others. From the 45th DAP, with the beginning of flowering of this plant, the species Frankliniella schultzei and Frankliniella brevicaulis showed clear population peaks in relation to the others. Our results are discussed in terms of phytosanitary concern for this group of insects with abundance in several crops of importance for Brazilian agriculture, in addition to the pea itself.