Impact of Predatory Mite Releases on the Abundance of Pecan Leaf Scorch Mite (Acari: Tetranychidae)

Author:

Dutcher James D.1

Affiliation:

1. Department of Entomology, University of Georgia Tifton Campus, Coastal Plain Experiment Station, Tifton, Georgia USA

Abstract

Release of the predatory mites, Galendromus occidentalis (Nesbitt) and Phytoseuilis persimilis Athias-Henriot, suppressed or controlled populations of pecan leaf scorch mite (Eotetranychus hicoriae McGregor [Acari:Tetranychidae]) in an 18-yr-old ‘Desirable’ pecan orchard. Predators controlled a low population (4.4 pecan leaf scorch mites and eggs per leaf in untreated trees) of pecan leaf scorch mites in the 2002 season at 28 days after the release date. In 2003, both species of predatory mites were released at 500 and 1000 mites per tree in the center tree of a 25-tree, square plot (0.41 ha). Untreated trees had 63, 240, and 38 pecan leaf scorch mites and eggs per leaf at 6, 10, and 24 d postrelease, respectively. Pecan leaf scorch mites were controlled at this high population density in the release area 24 d after the release. Release of the mites at 500 and 1000 G. occidentalis mites per tree reduced the pecan leaf scorch mite infestation by 67 and 91%, respectively. Release of 500 and 1000 P. persimilis mites per tree reduced the pecan leaf scorch mite infestation by 90 and 98%, respectively. Predatory mite releases appear to provide an effective management tactic for pecan leaf scorch mite for pecan producers in Georgia.

Publisher

Georgia Entomological Society

Subject

Insect Science,Agronomy and Crop Science,Ecology, Evolution, Behavior and Systematics

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3