Stink bugs represent an increasing risk to soybean production in the Midwest region of the United States. The current sampling protocol for stink bugs in this region is tailored for population density estimation and thus is more relevant to research purposes. A practical decision-making framework with more efficient sampling effort for management of herbivorous stink bugs is needed. Therefore, a binomial sequential sampling plan was developed for herbivorous stink bugs in the Midwest region. A total of 146 soybean fields were sampled across 11 states using sweep nets in 2016, 2017, and 2018. The binomial sequential sampling plans were developed using combinations of five tally thresholds at two proportion infested action thresholds to identify those that provided the best sampling outcomes. Final assessment of the operating characteristic curves for each plan indicated that a tally threshold of 3 stink bugs per 25 sweeps, and proportion infested action thresholds of 0.75 and 0.95 corresponding to the action thresholds of 5 and 10 stink bugs per 25 sweeps, provided the optimal balance between highest probability of correct decisions (≥ 99%) and lowest probability of incorrect decisions (≤ 1%). In addition, the average sample size for both plans (18 and 12 sets of 25 sweeps, respectively) was lower than that for the other proposed plans. The binomial sequential sampling plan can reduce the number of sample units required to achieve a management decision, which is important because it can potentially reduce risk/cost of management for stink bugs in soybean in this region.

中文翻译：

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美国中西部地区臭虫（半翅目：蝽科）存在/不存在抽样计划


臭虫给美国中西部地区的大豆生产带来了越来越大的风险。该地区目前的臭虫采样方案是为人口密度估计而定制的，因此与研究目的更相关。需要一个实用的决策框架和更有效的采样工作来管理草食性臭虫。因此，针对中西部地区的草食性臭虫制定了二项式顺序采样计划。 2016 年、2017 年和 2018 年，使用扫网对 11 个州总共 146 个大豆田进行了采样。二项式顺序采样计划是使用五个计数阈值和两个比例受感染行动阈值的组合制定的，以确定提供最佳采样结果的方案。对每个计划的操作特征曲线的最终评估表明，每 25 次扫描的计数阈值为 3 只椿象，而感染行动阈值的比例为 0.75 和 0.95，对应于每 25 次扫描 5 和 10 只椿象的行动阈值，提供了最佳方案。正确决策的最高概率（≥ 99%）和错误决策的最低概率（≤ 1%）之间的平衡。此外，两个计划的平均样本量（分别为 18 组和 12 组 25 次扫描）低于其他拟议计划的平均样本量。二项式顺序抽样计划可以减少实现管理决策所需的样本单位数量，这很重要，因为它可以潜在地降低该地区大豆臭虫的管理风险/成本。