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Studies on the within-plant distribution of whitefly, Bemisia tabaci (Gennadius) in potato and development of a sequential sampling plan
International Journal of Pest Management ( IF 1.5 ) Pub Date : 2020-09-28 , DOI: 10.1080/09670874.2020.1823520
Mohd Abas Shah 1 , Jandrajupalli Sridhar 2, 3 , Sanjeev Sharma 2
Affiliation  

Abstract

Whitefly, Bemisia tabaci (Gennadius), is a major constraint for seed potato production in India. For its efficient management, the within-plant distribution of B. tabaci was explored, and a sequential sampling plan was developed for potato crops. The highest proportion of B. tabaci adults, nymphs, and eggs was found on leaf numbers 3–7, 6–9, and 2–6, respectively (with leaf numbers beginning at the apical meristem). The count of adults from three leaves (nodes 4, 5, and 6) from the top stratum in a plant is proposed as a sample unit. Green's and Kuno's methods were used to develop fixed precision sequential sampling plans which yielded a similar average required sample size, except at lower densities (≤1 whitefly per plant). This information will enable efficient monitoring of B. tabaci.



中文翻译:

马铃薯粉虱、烟粉虱 (Gennadius) 的株内分布研究及序贯抽样计划的制定

摘要

白粉虱(Bemisia tabaci (Gennadius))是印度种薯生产的主要制约因素。为了有效管理,探索了烟粉虱的植物内分布,并为马铃薯作物制定了顺序抽样计划。烟粉虱比例最高成虫、若虫和卵分别在 3-7、6-9 和 2-6 的叶片上发现(叶片数从顶端分生组织开始)。建议以植物顶层的三片叶子(节点 4、5 和 6)的成虫数量作为样本单位。Green's 和 Kuno's 方法用于开发固定精度的顺序抽样计划,该计划产生了相似的平均所需样本量,但密度较低(每株植物≤1 只粉虱)除外。该信息将使烟粉虱的有效监测成为可能。

更新日期:2020-09-28
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