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首页> 外文期刊>Journal of Economic Entomology >Field Efficacy of Autodissemination and Foliar Sprays of an Entomopathogenic Fungus, Isaria fumosorosea (Hypocreales: Cordycipitaceae), for Control of Asian Citrus Psyllid, Diaphorina citri (Hemiptera: Liviidae), on Residential Citrus
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Field Efficacy of Autodissemination and Foliar Sprays of an Entomopathogenic Fungus, Isaria fumosorosea (Hypocreales: Cordycipitaceae), for Control of Asian Citrus Psyllid, Diaphorina citri (Hemiptera: Liviidae), on Residential Citrus

机译：田间疗法肺疗法（毛茛属植物（Durchocreapes：Cordycipitaceae），用于控制亚洲柑橘类培养基，Diaphorina Citri（Hemiptera：Liviidae），在居住柑橘中的野外疗法

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摘要

Autodissemination and foliar sprays of PFR-97 (Certis Inc., Columbia, MD) microbial insecticide, a blastospore formulation of Isena fumosorosea Wize (Hypocreales: Cordycipitaceae), were evaluated for control of Asian citrus psyllid, Diaphorina citri Kuwayama (Hemiptera: Liviidae), on residential citrus. Seasonal trials on dooryard trees in South Texas evaluated: 1) pathogenicity of I. fumosorosea(Ifr) spores on autodisseminators (dispensers) deployed up to 3 wk on grapefruit trees; 2) psyllid control on several citrus species by dispensers and sprays; 3) infection range of the dispenser. Decline in spore pathogenicity over time was similar among dispensers during fall, winter, or spring and decreased by 30% after 1 d, 59% after 7 d, 81% after 14 d, and 100% after 21 d. Dispensers or sprays were equally effective for psyllid control on heavily infested lime trees from fall to spring and reduced mean reproduction (cumulative eggs) by 90% and mean attack intensity (cumulative psyllid-days) of adults by 76% and nymphs by 82%. Dispensers or sprays were also equally effective for psyllid control on lightly infested lime trees from spring to mid-summer and on orange or grapefruit trees from fall to winter. Very light infestations on grapefruit trees from spring to mid-summer were not significantly reduced by dispensers or sprays. Psyllid control was not improved by combining dispensers and sprays. Adult psyllids infected by /fr were recovered in trees located 3-4 m away from trees with dispensers but not at greater distances. PFR-97 dispensers could be a treatment option for D. citri in settings where chemical control is problematic.
机译：对PFR-97（Certis Inc.，Columbia，MD）微生物杀虫剂的自动传播和叶面喷施进行了评估，该杀虫剂是一种由伊塞纳烟熏菌（下实目：Cordycipitaceae）制成的芽生孢子制剂，用于控制亚洲柑橘木虱（Diphorina citri Kuwayama，半翅目：Liviidae）在住宅柑橘上的传播。在德克萨斯州南部的庭院树上进行的季节性试验评估了：1）在葡萄柚树上部署长达3周的自动传播器（分配器）上，烟熏衣原体（Ifr）孢子的致病性；2） 通过喷洒器和喷雾器控制几种柑橘的木虱；3） 分发器的感染范围。随着时间的推移，孢子致病性在秋季、冬季或春季期间的下降趋势与分配器相似，第1天后下降30%，第7天后下降59%，第14天后下降81%，从秋季到春季，喷洒器或喷雾剂对严重感染的石灰树的木虱控制同样有效，使成虫的平均繁殖（累积卵数）减少90%，平均攻击强度（累积木虱天数）减少76%，若虫减少82%。从春季到仲夏，喷洒器或喷雾剂对轻度感染的酸橙树和从秋季到冬季的柑橘树或葡萄柚树的木虱控制也同样有效。从春季到仲夏期间，葡萄柚树上非常轻微的侵扰并没有通过喷洒器或喷雾器显著减少。混合使用喷洒器和喷雾器并没有改善木虱的控制。受/fr感染的成年木虱在距离树木3-4米的树木中被发现，但距离较远。在化学控制存在问题的环境中，PFR-97分配器可能是柠檬酸假丝酵母菌的治疗选择。

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