Productivity and physiology of kale inoculated with entomopathogenic fungi of Amazon region to control caterpilla

Q3 Agricultural and Biological Sciences

Comunicata Scientiae Pub Date : 2023-08-07 DOI:10.14295/cs.v14.3960

Débora Oliveira Gomes, Naiane Franciele Barreira de Melo, Rubson da Costa Leite, Flavio Henrique Santos Rodrigues, Gledson Luiz Salgado de Castro, Jessivaldo Rodrigues Galvão, Rafael Gomes Viana, Telma Fátima Vieira Batista

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Abstract

The use of biological control agents such as entomopathogenic fungi is an alternative for the control of kale(Brassica oleracea L.) defoliating caterpillars. The objective was to investigate the efficacy of entomopathogenicfungi of Amazon region in the control of defoliating caterpillars in kale and their impacts on the physiologicaland agronomic responses of the crop. Field and greenhouse experiments were conducted in randomized blockdesign and completely randomized design, respectively. The treatments consisted in the application of isolatesof entomopathogenic fungi: Beauveria bassiana, Isaria sp., Metarhizium anisopliae and Trichoderma asperellum.The control treatment consisted of the application of an chemical insecticide based on deltamethrin.Variablesreferring to the development, yield and physiology of the plants were evaluated. Field results revealed thatplants treated with the fungi B. bassiana, M. anisopliae and T. asperellum showed levels of severity, number ofleaves and commercial yield that did not differ from the standard treatment; however, they showed a lowerpopulation density of the defoliating caterpillar complex. The application of the treatments with M. anisopliaeand chemical insecticide showed better photosynthetic performance. In greenhouse, the fungus T. asperellumprovided greater plant height and robustness index in relation to the treatment with chemical insecticide.The entomopathogenic fungi of Amazon region can be contributed to the integrated management of leafdefoliating caterpillars in kale. These microorganisms have similar efficiency with chemical insecticides, beingecologically and economically viable to mitigate the negative impacts caused by the systematic use ofchemicals.

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接种亚马逊地区昆虫病原真菌防治羽衣甘蓝幼虫的产量和生理特征

使用生物防治剂，如昆虫病原真菌，是控制甘蓝（Brassica oleracea L.）落叶毛虫的一种替代方法。目的研究亚马逊地区昆虫病原真菌对羽衣甘蓝落叶毛虫的防治效果及其对作物生理和农艺反应的影响。田间试验和温室试验分别采用随机分组设计和完全随机设计。处理包括应用昆虫病原真菌的分离株：白僵菌、Isaria sp.、绿僵菌和木霉。对照处理包括施用以溴氰菊酯为基础的化学杀虫剂。对涉及植物发育、产量和生理的变异进行了评估。田间试验结果表明，用真菌B.bassiana、M.anisopliae和T.asperellum处理的植物表现出和标准处理没有差异的严重程度、叶片数量和商业产量；然而，它们显示出落叶毛虫复合体的种群密度较低。应用绿僵菌和化学杀虫剂处理的光合性能较好。在温室中，与化学杀虫剂处理相比，真菌T.asperellum提供了更高的株高和健壮性指数。亚马逊地区的昆虫病原真菌有助于羽衣甘蓝落叶毛虫的综合治理。这些微生物与化学杀虫剂具有相似的效率，在科学和经济上都是可行的，可以减轻系统使用化学品造成的负面影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Comunicata Scientiae Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)

CiteScore

0.90

自引率

0.00%

发文量

期刊介绍： The Comunicata Scientiae journal edited by Campus “Profa Cinobelina Elvas” of Federal University of Piauí (Brazil) publishes original articles, scientific notes and review articles (when invited by the editorial board), which present significant importance for Agrarian and Environmental Sciences in Portuguese, Spanish and preferentially, in English.