Universidade Federal de Viçosa, Departamento de Entomologia, Avenida Peter Henry Rolfs, Viçosa, MG, 36570-900, Brazil.
Universidade de Rio Verde, Produção Vegetal, Fazenda Fontes do Saber, Rio Verde, GO, 75901-970, Brazil.
J Econ Entomol. 2023 Apr 24;116(2):599-604. doi: 10.1093/jee/toad005.
Sampling plans are an essential part of integrated pest management programs. Sequential sampling plans enable rapid and low-cost assessment of pest densities. Thrips are emerging pests in soybean crops, and the main method used in pest control is chemical. In soybean crops, insecticides are applied mainly using tractors or airplanes. Thus, this work aimed to determine sequential sampling plans for thrips in soybean crops with insecticide applications using a tractor or airplane. Data were collected in 56 soybean fields, and each field was 20 ha. Sampling plans were determined and validated. The lower (m0) and upper (m1) limits of the sequential sampling plans were: m0 = 1.72 and m1 = 3.43 (by tractor applications) and, m0 = 2.27 and m1 = 4.53 thrips. sample-1 (by airplane applications). The slope (S) and the lower (h0) and upper (h1) intercepts of the sequential sampling plans were: S = 2.42, h0 = -5.79, and h1 = 5.79 (by tractor applications) and, S = 3.19, h0 = -6.83, and h1 = 6.83 (by airplane applications). Sequential sampling plans allowed for correct decisions to be made in all situations using a maximum of 10 samples. The sequential plan reduced the sampling effort by over 87% compared to conventional sampling plans. Therefore, these control decision-making systems have proven feasible and advantageous for implementing integrated pest management programs for controlling thrips species in soybean crops.
抽样方案是综合虫害管理计划的重要组成部分。序贯抽样方案能够快速、低成本地评估虫害密度。蓟马是大豆作物中的新兴害虫，主要的虫害控制方法是化学防治。在大豆作物中，杀虫剂主要通过拖拉机或飞机施用。因此，本研究旨在确定使用拖拉机或飞机施药时大豆作物蓟马的序贯抽样方案。在 56 个大豆田块中收集了数据，每个田块面积为 20 公顷。确定并验证了抽样方案。序贯抽样方案的下限（m0）和上限（m1）分别为：m0 = 1.72 和 m1 = 3.43（拖拉机施药），m0 = 2.27 和 m1 = 4.53 蓟马。样本-1（飞机施药）。序贯抽样方案的斜率（S）和下限（h0）和上限（h1）截距分别为：S = 2.42，h0 = -5.79，h1 = 5.79（拖拉机施药），S = 3.19，h0 = -6.83，h1 = 6.83（飞机施药）。序贯抽样方案允许在最多使用 10 个样本的情况下做出正确的决策。与传统抽样方案相比，序贯抽样方案减少了超过 87%的抽样工作量。因此，这些控制决策系统已被证明在实施大豆作物蓟马综合虫害管理计划方面是可行且有利的。
