Wind conditions . Spraying herbicide, wind conditions can lead to herbicide spray drift , causing sensitive crop injury . Particularly in hand sprayer spray 2,4-D, MCPA and other herbicides , if larger the wind , the wind will cause crop injury . Glyphosate , paraquat Herbicide when wind causes droplet spatter can cause a variety of crops were affected by injury.
Soil texture. Viscous heavy, high organic matter content of the soil, strong adsorption of pesticides , pharmaceuticals little mobility in the soil . The sandy soil organic matter content is low, the absorbed weak, easy to leaching in the soil easy to spread , easy to make some of the crop phytotoxicity . Such as water-soluble high linuron , prometryn simetryne and other herbicides in the sandy soil is easy to make crops suffer injury.
In short , causing crop injury variety of reasons, but the most fundamental reason is the human factor . If garden water sprayer spraying is not master application techniques , blind indiscriminate use that drug misuse , or use of any increase dose or concentration , growth stages in inappropriate medication, or use the herbicide sprayer is not thoroughly cleaned , even if used for pest control disease prevention , may result in crop injury .
没有评论:
发表评论