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首页> 外文期刊>South African Journal of Plant and Soil >The effect of the adjuvant, Break-Thru S240, on whorl penetration and efficacy of foliar insecticide applications against Chilo partellus
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The effect of the adjuvant, Break-Thru S240, on whorl penetration and efficacy of foliar insecticide applications against Chilo partellus

机译：佐剂Break-Thru S240对轮叶穿透力和叶面杀虫剂施用对against虫的功效

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摘要

Insecticide sprays registered for the control of maize stem borers are all intended for whorl application. Chemical control of these pests is complicated by their cryptic feeding habit inside plant whorls. The aim of this study was to investigate whether addition of the organosilicone adjuvant, Break-Thru S240, to insecticide sprays would result in improved stem borer control. In one experiment the position of stem borer feeding damage inside plant whorls was quantified to have a standard for comparison and evaluation of the effective distances of downwards movement of spray applications into whorls. The distance of movement of spray applications at five adjuvant rates (50, 100, 200, 400 & 600 ml ha(-1)) into whorl leaves was determined. A colorant was added to spray applications to facilitate measuring the distances of downwards movement of water into each whorl leaf. A 14% increase in downwards movement of sprays into the target zone was observed with addition of the adjuvant. Efficacy of insecticide sprays for control of C. partellus with and without the adjuvant was evaluated under field conditions. Increased levels of efficacy were observed with addition of the adjuvant but not with all the insecticides.
机译：注册用于控制玉米stem虫的杀虫剂喷雾剂均用于螺纹施用。这些有害生物的化学防治因其在植物轮毂内部的隐秘觅食习性而变得复杂。这项研究的目的是调查在杀虫剂喷雾剂中添加有机硅佐剂Break-Thru S240是否会改善茎bore的防治效果。在一个实验中，量化了植物螺inside内茎bore进食损伤的位置，从而为比较和评估喷雾剂向螺downward向下移动的有效距离提供了标准。确定了在五种佐剂速率下（50、100、200、400和600 ml ha（-1））向轮叶中喷洒的移动距离。将着色剂添加到喷雾应用中，以方便测量水向下进入每个螺旋叶片的距离。在添加佐剂的情况下，观察到喷雾向目标区域的向下运动增加了14％。在田间条件下评估了使用和不使用佐剂的杀虫喷雾剂控制粉虱的功效。加入佐剂可观察到功效水平提高，但并非所有杀虫剂都能提高功效。

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