中文摘要：本文进行了为期2年的研究，旨在确定西部豆类夜蛾（Striacosta albicosta Smith）（WBC）幼虫取食损伤是否会增加玉米(Zea mays L.)中真菌病害赤霉穗腐病[禾谷镰刀菌 (Schwein.) Petch]的严重程度。还评估了有/无WBC的压力下，醌外部抑制杀真菌剂，嘧菌酯对赤霉穗腐病严重程度和霉菌毒素生产的影响。对每个变量的影响进行单独和组合评估，以确定每个变量对穗腐病严重程度的影响。研究发现，WBC幼虫的取食损伤显著促进了田间玉米中禾谷镰刀菌的发育。因此赤霉穗腐病的有效综合管理策略应首先针对害虫，以期限制病害的严重程度和随后玉米籽粒中禾谷镰刀菌产生的霉菌毒素。
外文摘要：Background: A 2 year study was conducted to determine whether western bean cutworm (Striacosta albicosta Smith) (WBC) larval feeding damage increases severity of the fungal disease Gibberella ear rot [Fusarium graminearum (Schwein.) Petch] in field corn (Zea mays L.). The effect of a quinone-outside inhibiting fungicide, pyraclostrobin, on Gibberella ear rot severity and mycotoxin production, both with and without WBC pressure, was also evaluated. The impact of each variable was assessed individually and in combination to determine the effect of each upon ear disease severity. Results: There was a positive correlation between the presence of WBC larvae in field corn and Gibberella ear rot severity under inoculated conditions in the 2 years of the experiment. An application of pyraclostrobin did not impact Gibberella ear rot development when applied at corn growth stage R1 (silks first emerging). Conclusion: Feeding damage from WBC larvae significantly increases the development of F. graminearum in field corn. We conclude that an effective integrated management strategy for Gibberella ear rot should target the insect pest first, in an effort to limit disease severity and subsequent mycotoxin production by F. graminearum in kernels.
外文关键词：Striacosta albicosta； western bean cutworm； Fusarium graminearum； fungicide
作者：Parker, NS； Anderson, NR； Richmond, DS； Long, EY； Wise, KA； Krupke, CH
作者单位：Purdue Univ
期刊名称：PEST MANAGEMENT SCIENCE
期刊影响因子：2.811
出版年份：2017
出版刊次：3
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