棉花铃虫（半翅目：异翅亚目）损伤抽样方案的制定。

Development of sampling plans for cotton bolls injured by stink bugs (Hemiptera: Pentatomidae).

机构信息

Department of Entomology, Soils, and Plant Sciences, Pee Dee Research and Education Center, Clemson University, 2200 Pocket Rd., Florence, SC 29506-9727, USA.

出版信息

J Econ Entomol. 2010 Apr;103(2):525-32. doi: 10.1603/ec09290.

DOI:10.1603/ec09290

PMID:20429470

Abstract

Cotton, Gossypium hirsutum L., bolls were sampled in commercial fields for stink bug (Hemiptera: Pentatomidae) injury during 2007 and 2008 in South Carolina and Georgia. Across both years of this study, boll-injury percentages averaged 14.8 +/- 0.3 (SEM). At average boll injury treatment levels of 10, 20, 30, and 50%, the percentage of samples with at least one injured boll was 82, 97, 100, and 100%, respectively. Percentage of field-sampling date combinations with average injury < 10, 20, 30, and 50% was 35, 80, 95, and 99%, respectively. At the average of 14.8% boll injury or 2.9 injured bolls per 20-boll sample, 112 samples at Dx = 0.1 (within 10% of the mean) were required for population estimation, compared with only 15 samples at Dx = 0.3. Using a sample size of 20 bolls, our study indicated that, at the 10% threshold and alpha = beta = 0.2 (with 80% confidence), control was not needed when <1.03 bolls were injured. The sampling plan required continued sampling for a range of 1.03-3.8 injured bolls per 20-boll sample. Only when injury was > 3.8 injured bolls per 20-boll sample was a control measure needed. Sequential sampling plans were also determined for thresholds of 20, 30, and 50% injured bolls. Sample sizes for sequential sampling plans were significantly reduced when compared with a fixed sampling plan (n=10) for all thresholds and error rates.

摘要

棉花，陆地棉，棉铃在 2007 年和 2008 年在南卡罗来纳州和佐治亚州的商业领域进行了采样，以评估臭虫（半翅目：盲蝽科）的伤害。在这项研究的两年中，棉铃损伤率平均为 14.8%±0.3（标准误差）。在平均棉铃损伤处理水平为 10%、20%、30%和 50%时，至少有一个受损棉铃的样本百分比分别为 82%、97%、100%和 100%。平均损伤<10%、20%、30%和 50%的田间采样日期组合的百分比分别为 35%、80%、95%和 99%。在平均 14.8%的棉铃损伤或每 20 个棉铃样本中有 2.9 个受损棉铃的情况下，需要 112 个样本（Dx=0.1（在平均值的 10%以内））进行种群估计，而 Dx=0.3 时只需要 15 个样本。使用 20 个棉铃的样本量，我们的研究表明，在 10%的阈值和 alpha=beta=0.2（80%置信区间）下，当<1.03 个棉铃受损时，不需要进行控制。抽样计划需要继续对每 20 个棉铃样本中 1.03-3.8 个受损棉铃进行抽样。只有当每 20 个棉铃样本中受损棉铃>3.8 个时，才需要采取控制措施。还确定了 20%、30%和 50%受损棉铃阈值的序贯抽样计划。与所有阈值和误差率的固定抽样计划（n=10）相比，序贯抽样计划的样本量显著减少。