wees_52_215297_301tp - 伊利诺伊大学.pdfVIP

Weed Science, 52:297–301. 2004 Combined effects of Aceria malherbae and herbicides on field bindweed (Convolvulus arvensis) growth Rick A. Boydston The effects of a gall mite (Aceria malherbae) and sublethal doses of either 2,4-DB Corresponding author. USDA-ARS, 24106 North or glyphosate on field bindweed growth were evaluated under laboratory conditions. Bunn Road, Prosser, WA 99350; Mite feeding reduced field bindweed shoot biomass 37 to 48% and root biomass boydston@pars.ars.usda.gov 46 to 50%. 2,4-DB at 0.07 to 0.14 kg ae ha1 or glyphosate at 0.14 to 0.28 kg ai ha1 reduced field bindweed root biomass 25 to 52%. Combining A. malherbae Martin M. Williams, II feeding with either 2,4-DB or glyphosate application reduced root biomass of field USDA-ARS, 1102 South Goodwin Avenue, Urbana, bindweed plants more than mites or either herbicide alone. Live A. malherbae were IL 61801 present on field bindweed 3 wk after treatment with either herbicide. Combination of A. malherbae with sublethal herbicide doses may allow for field bindweed sup- pression while reducing potential herbicide injury to crops and maintaining A. mal- herbae populations. Nomenclature: 2,4-DB; glyphosate; field bindweed, Convolvulus arvensis L. CON- AR. Key words: Biocontrol, biological control, gall mite, integrated pest management. Field bindw