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首页> 外文会议>Innovative Application,Formulation,and Adjuvant Technologies >Influence of Nozzle Type, Speed, and Pressure on Droplet Size and Weed Control from Glyphosate, Dicamba, and Glyphosate Plus Dicamba
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Influence of Nozzle Type, Speed, and Pressure on Droplet Size and Weed Control from Glyphosate, Dicamba, and Glyphosate Plus Dicamba

机译：喷嘴类型，速度和压力对草甘膦，dicamba和草甘膦加上Dicamba的液滴尺寸和杂草对照的影响

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Improper or suboptimal application techniques can cause decreased weed control and increased environmental contamination. Droplet size is a key factor in pesticide applications in regard to both drift and efficacy. Droplet size can be altered by several application parameters, such as nozzle type, pressure, orifice size, and spray solution. The objective of this study was to evaluate the influence of nozzle type, application speed, and pressure when using glyphosate, dicamba, or glyphosate plus dicamba on droplet size and control of common lambsquarters, velvetleaf, kochia, and grain sorghum. The study was conducted with two herbicides, glyphosate at 0.77 kg ae ha~(-1) and dicamba at 0.56 kg ae ha~(-1), tested alone and in combination. The application rate was 94 L ha~(-1) at three different speeds (8, 16, and 24 kph), and the pressures used were low, medium, and high for each speed and orifice size combination. The pressures were combined with the appropriate orifice size to deliver a fixed spray volume. An XR, AIXR, and TTI nozzle were used (two of which are venturi nozzle designs). The droplet size ranged from 219 to 232 μm for the XR nozzle across the three solutions, 440 to 482 μm for the AIXR nozzle, and 740 to 828 μm for the TTI nozzle. Solutions using dicamba resulted in the largest droplet size, followed by glyphosate and then the combination. There were no significant interactions for nozzle × herbicide across all species.
机译：不当或次优应用技术可能导致杂草控制减少和环境污染增加。液滴尺寸是农药应用在漂移和疗效方面的关键因素。液滴尺寸可以通过几种应用参数改变，例如喷嘴类型，压力，孔口尺寸和喷雾溶液。本研究的目的是评估喷嘴型，施用速度和压力的影响，当使用草甘膦，Dicamba或草甘膦加上Dicamba对液滴尺寸和普通羊羔，velvetleaf，kochia和谷物高粱的控制。该研究用两种除草剂进行，草甘膦在0.77kg Ae Ha〜（-1）和dicamba，在0.56kg ae ha〜（-1），单独测试并组合测试。施用率为94L HA〜（-1），以三种不同的速度（8,16和24 kph），使用的压力为低，培养基，以及每个速度和孔口尺寸组合的高。压力与适当的孔口尺寸合并以提供固定的喷雾体积。使用XR，AIXR和TTI喷嘴（其中两个是文丘里喷嘴设计）。液滴尺寸为XR喷嘴的219至232μm，用于AIXR喷嘴440至482μm，对于TTI喷嘴，740至828μm。使用Dicamba的解决方案导致最大的液滴尺寸，然后是草甘膦，然后组合。在所有物种上，喷嘴×除草剂没有显着的相互作用。

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