Dilution water used in pesticide
Dilution water used in pesticide different effects on different physical and chemical properties of pesticides, can sometimes improve injury. If hard water is used to dilute EC pesticides could easily lead to injury.
Residual injury
Since long-term continuous use of a single strong pesticide residues, accumulated year after year be sensitive vegetable produce injury.
Drift injury
When the use of pesticides or mist drifting particles diffuse fly around sensitive crops would produce injury. Onion Field garden pressure sprayer spraying of herbicides such as cowpea easy to produce injury.
Not thoroughly cleaned sprayer
Spraying herbicide sprayer, if not thoroughly cleaned and then used for vegetable spray pesticides, herbicides residues in vegetables easy to produce injury.
Resistance factor
Different vegetables, different species, different growth stages of pesticide resistance are different. Brassicaceae, Solanaceae, Gramineae vegetables resistant strong, weak resistant leguminous vegetables, melons and vegetables Resistance of the weakest. Cabbage on copper fungicide sensitivity for carbaryl sensitive melons, melons, beans can not touch the 2,4-D herbicide. In addition, vegetables or plants at different growth stages of drug resistance in different parts of victims of different capacities, such as tender young vegetables and vegetable section, flowering resistant weak, prone to injury. Waxy or hairy leaves more vegetables is not easy to produce injury.
Environmental Factors
Hot spraying easy to produce injury, it is not easy spraying temperature, especially in hot weather do not knapsack power sprayer spraying when the temperature is high noon. Some pharmaceutical use in rainy weather prone to injury, such as rain, humid conditions using Bordeaux mixture prone to injury. Strong sunlight prone to injury. Less sandy soil and organic vegetables grown in soils prone to injury, followed by loam, clay soil organic matter and more difficult to cause injury.
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