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Distribution Pattern of Thrips (Thysanoptera: Thripidae) and Tomato Chlorotic Spot Virus in South Florida Tomato Fields
Environmental Entomology ( IF 1.7 ) Pub Date : 2020-01-10 , DOI: 10.1093/ee/nvz153
Rafia A Khan 1 , Dakshina R Seal 1 , Shouan Zhang 1 , Oscar E Liburd 2 , Rajagopalbabu Srinivasan 3 , Edward Evans 1
Affiliation  

Abstract Tomato chlorotic spot virus (TCSV) is an orthotospovirus that causes a devastating disease in tomato (Lycopersicon esculentum Miller).TCSV emerged recently in South Florida. Studies were conducted in three commercial tomato fields in Miami-Dade County, Florida during the vegetable-growing seasons from October to April in 2015 through 2017. Each year, data were collected at 3, 6, and 9 wk after transplanting at various distances from the edges of each fields. Based on 3 yr total samples, three species of thrips were commonly observed melon thrips, Thrips palmi Karny (62.16 ± 0.79%), being the most abundant species followed by common blossom thrips, Frankliniella schultzei Trybom (21.55 ± 0.66%), and western flower thrips, Frankliniella occidentalis (Pergande) (16.26 ± 0.61%). Abundance of all thrips and TCSV infected plants was high at the edge of a tomato field 3 wk after transplanting with significantly fewer infected plants toward the center of the field.The distribution patterns of thrips and TCSV in various fields were mostly regular and aggregated across the sampling dates during the study period. Abundance of TCSV symptomatic plants and thrips species was high at the edge of the field and increased over time. The number of samples required to accurately determine population density of thrips was calculated by using three precision levels (0.10, 0.20, 0.30) at three predetermined densities of thrips (0.10, 0.20, and 0.40 per sample).This information will provide guidelines to growers, crop protection personnel, agricultural scouts, and researchers to develop a sustainable thrips and tospovirus management program.

中文翻译:

南佛罗里达番茄田蓟马(缨翅目:蓟马科)和番茄绿斑病毒的分布格局

摘要 番茄褪绿斑病毒(TCSV) 是一种引起番茄(Lycopersicon esculentum Miller) 毁灭性病害的正源病毒。TCSV 是最近在南佛罗里达州出现的。在 2015 年至 2017 年 10 月至 4 月的蔬菜生长季节期间,在佛罗里达州迈阿密-戴德县的三个商业番茄田中进行了研究。每年,在不同距离移栽后的第 3、6 和 9 周收集数据。每个字段的边缘。根据 3 年的总样本,常见的三种蓟马是瓜蓟马蓟马,棕榈蓟马 (62.16 ± 0.79%),是最丰富的物种,其次是常见的开花蓟马、Frankliniella schultzei Trybom (21.55 ± 0.66%) 和西部花蓟马,Frankliniella occidentalis (Pergande) (16.26 ± 0.61%)。所有蓟马和 TCSV 感染植物在移植后 3 wk 的番茄田边缘的丰度很高,而在田间中心的感染植物显着减少。 各个田间蓟马和 TCSV 的分布模式大多是规则的,并在整个区域聚集。研究期间的采样日期。TCSV 有症状的植物和蓟马物种在田地边缘的丰度很高,并且随着时间的推移而增加。准确确定蓟马种群密度所需的样本数量是通过在三个预先确定的蓟马密度(每个样本 0.10、0.20 和 0.40)下使用三个精度水平(0.10、0.20、0.30)计算得出的。该信息将为种植者提供指导、作物保护人员、农业侦察员和研究人员开发可持续的蓟马和 tospovirus 管理计划。
更新日期:2020-01-10
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