Interaction of a <i>Myrothecium verrucaria</i>Mycelial Preparation and a Glyphosate Product for Controlling Redvine (<i>Brunnichia ovata</i>) and Trumpet Creeper (<i>Campsis radicans</i>)

作     者：Clyde Douglas Boyette Robert E.Hoagland Charles T.Bryson Mark A.Weaver Kenneth C.Stetina 

作者机构：USDA-ARSBiological Control of Pests Research UnitStonevilleMSUSA USDA-ARSCrop Production and Systems Research UnitStonevilleMSUSA 

出 版 物：《American Journal of Plant Sciences》 (美国植物学期刊（英文）)

年 卷 期：2020年第11卷第2期

页      面：201-213页

学科分类：08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：Bioherbicide Interaction Mycelial Formulation Myrothecium verrucaria Campsis radicans Brunnichia ovata 

摘      要：A mycelial formulation of the bioherbicidal fungus Myrothecium verrucaria (Alb. & Schwein.) Ditmar: Fr. (MV) was tested alone and in combination with a commercially available glyphosate [N-(phosphonomethyl)glycine] (GLY) product for controlling the invasive vines, redvine [Brunnichia ovata (Walt.) Shinners], and trumpet creeper [Campsis radicans (L.) Seem. ex Bureau] in field experiments conducted near Stoneville, MS. Several application timing regimens were evaluated (Fall, Spring, Fall + Spring, and Spring + Fall). We found that a Fall + Spring application of MV + GLY controlled redvine and trumpet creeper by 95%, 12 days after the second treatment, through a synergistic interaction of the fungus and glyphosate. Disease symptomatology was characterized by rapid necrosis of leaf and stem tissues, with mortality occurring within 72 h. Neither glyphosate alone, nor MV alone, effectively controlled either weed species under any application timing regimen. No visual disease or herbicide damage occurred on glyphosate-resistant soybean plants in the treated test plots. These results suggest that some formulations of glyphosate, mixed with the bioherbicide MV, can effectively control redvine and trumpet creeper, two of the most troublesome weeds in the row crops of the Mississippi Delta region in the mid-southern U.S.