Study of synergistic effect of combined application of tebuconazole with two biocontrol agents for management of Fusarium crown rot in durum wheat

IF 0.5 4区农林科学 Q4 AGRONOMY

Revista De La Facultad De Agronomia De La Universidad Del Zulia Pub Date : 2023-07-18 DOI:10.47280/revfacagron(luz).v40.n3.03

A. Oulmi, Amor Bencheikh, Walid Mamache, Asma Gharzouli, Meriem Barkahoum Daichi, N. Rouag

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Abstract

The in vitro and growth chamber, tests were conducted in order to assess the effects of B. amyloliquefaciens B18 and B. subtilis S8 strains each alone and in combination with tebuconazole against F. culmorum (FC) isolate responsible of Fusarium crown rot (FCR) in durum wheat. The in vitro growth of B18 and S8 strains was unaffected by 30 µg.mL-1 tebuconazole. The Bacillus strains (at 106 CFU.mL-1) and tebuconazole, each alone, reduced the mycelial growth, this effect was significantly improved when they were combined (inhibition of more than 92 %). In growth chamber experiments, efficacy against FCR was significantly higher when integrating Bacillus strains and tebuconazole than by either alone; control efficacy of tebuconazole at 30 µg.mL-1 in combination with S8 and B18 strains reached 90.91 and 95.45 %, respectively. The obtained results indicated that combination of tebuconazole with the biocontrol agents B18 and S8 synergistically improved control efficiency of the fungicide against FCR of wheat.

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替布康唑与两种生物防治剂联合施用防治硬粒小麦枯萎病的协同效应研究

为评价解淀粉芽孢杆菌B18和枯草芽孢杆菌S8菌株单独及与戊康唑联合对硬粒小麦枯萎病(FCR)病原菌culmorum (FC)的抑菌效果，进行了体外和室内试验。30µg对B18和S8菌株的体外生长无影响。mL-1 tebuconazole。106 CFU.mL-1的芽孢杆菌菌株和戊康唑单独使用均能抑制菌丝生长，两者联合使用效果显著提高(抑制率超过92%)。在生长室实验中，芽孢杆菌与戊康唑联合使用对FCR的抑制效果显著高于单独使用;替布康唑30µg的防治效果。mL-1与S8和B18菌株的结合率分别为90.91%和95.45%。结果表明，替布康唑与生物防治剂B18和S8配伍可协同提高杀真菌剂对小麦FCR的防治效果。

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来源期刊

Revista De La Facultad De Agronomia De La Universidad Del Zulia AGRONOMY-

CiteScore

0.50

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： La Revista de la Facultad de Agronomía de la Universidad del Zulia publica artículos científicos, notas técnicas, comunicaciones rápidas y artículos invitados originales e inéditos, es decir, que no hayan sido publicados ni enviados simultáneamente a otra revista para su publicación, de autores interesados en el campo agrícola vegetal y agrícola animal. De presentarse el caso que el autor o autores hubiesen enviado o publicado su manuscrito simultáneamente en otra revista, podrán ser sancionados con la no publicación en esta revista por tiempo indefinido. Se admiten manuscritos escritos en idioma Español, Portugués o Inglés, con un resumen en Español o Portugués y otro en Inglés (Abstract).