Easy to cause injury factors on vegetable

First, the types of pesticides factors

Different types of pesticides on different vegetables injury to different degrees. Organochlorine insecticides such as melons and vegetables easy to produce injury, water pressure sprayer fenthion on cruciferous vegetables seedlings produce injury.

Second, the pharmaceutical dosage forms and the use of concentration

Different formulations of pesticide phytotoxicity possibility of different sizes, usually oil> Emulsions> WP> Powder> Milk> granules. Pesticides appear oil, cream and other stratification, precipitation occurs, wettable powder caking, low suspension, powder flocculation, etc. will increase the likelihood of injury produced. Use the higher the concentration, the more prone to injury. Generally soluble in water, small molecular weight pesticides easy to produce injury. Bordeaux mixture on a variety of vegetables such as security, and copper sulfate soluble in water, on a variety of vegetables unsafe.

Three, misuse of pesticides

Because improper storage, causing pesticides mark off, or labels is unclear, or remember name of the drug, or the wrong medicine, or as long as what is grass herbicides can be used, such as herbicides, fungicides or pesticides will the use, or the monocot crop herbicide used dicotyledonous crop fields, and this will have a serious injury, or even never produced.

Fourth, the wrong mix of pesticides

Mix between two or more pesticide misuse, garden water sprayer but also easy to produce injury. Such as Bordeaux mixture and lime sulfur can not mix the two should be used in conjunction with a certain time interval.