Damage to plants pesticides divided into acute and chronic. Acute injury in a few hours to a few days of irrigation sprayer spraying that manifested , such as blades ( fruit ) spots , yellowing, chlorosis , wilt , leaf , leaves drop, DPC clusters and so on. Chronic drug after a long time before depriving manifested as reduced photosynthesis , flower bud formation and fruit ripening delay , small , deformity, color and flavor deterioration . Once fruit trees suffered injury, the following measures should be taken immediately to rescue .
1 , spray potassium permanganate . Potassium permanganate is a strong oxidant , a variety of chemical substances having an oxidation decomposition. 6,000 times spraying potassium permanganate solution , which can effectively alleviate the injury.
2 , rinse with water. Most chemicals are not water erosion, if the injury caused by excessive pesticide concentrations , use foam sprayer filled with water , washed repeatedly toward the fruit leaves to wash away the residue of the drug to the blade surface .
3 , pause with similar drugs . Before the injury completely removed to minimize the use of pesticides, especially to stop using pesticides similar to avoid aggravating the injury .
4 , followed by fertilization of water . Fruit injury occurred after watering should be combined with fast-acting fertilizer supplement , and Row crop cultivators . Meanwhile, spraying should be 0.3-0.5% and 0.2-0.3 % potassium dihydrogen phosphate, urea , etc., in order to improve the nutritional status of fruit trees , and enhance root absorption capacity . Operation , should be in before 10:00 and after 16:00 .
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