Pesticide injury symptoms:
One: Spots: Occur mainly on leaves, sometimes on branches and fruits. Common symptoms: brown spots, yellow spots, spots, net spots.
II: Yellowing: Occurs in the stems and leaves of plants. Yellowing of leaves is more common.
Three: malformation: occurs in the plant's stem, branches and leaves. Common symptoms: rolling leaf, plexi, abnormal ear (fruit) and so on.
Four: withered: often the entire plant performance symptoms, most caused by herbicide injury.
Five: shedding: fallen leaves, falling flowers, fruit drop.
Sixth: Growth stagnation: Phytotoxicity inhibits the normal growth of crops.
Seven: Inferior Fruit: The fruit has a small volume after injury, abnormal skin and deteriorated quality.
Eight: Infertility: It is the improper use of drugs during the reproductive growth of crops, causing phytotoxicity.
Remedy:
1. Spraying or Irrigation: Immediately after the pesticide is sprayed on the surface of the leaves, spray water, dilute and wash off the pesticides attached to the leaves and branches to reduce the pesticide content in the tree. If earthfurodan granules or other spray (herbicide) herbicides cause phytotoxicity, drainage and lavage measures should be taken. , that is, first flood irrigation, 1-2 times running water to wash away the residual pesticide in the soil.
2, spraying (fat) and: organic phosphorus, pyrethroids, ammonioformic acid pesticides caused by phytotoxicity, spray 0.5-1% lime water, washing powder, soap and other alkaline substances, and detoxification . In particular, spray 0.5-1% ammonium bicarbonate and other basic substances to neutralize detoxification. In particular, alkaline fertilizer solutions such as 0.5-1% ammonium bicarbonate can not only detoxify, but also play a role in topdressing and promote the recovery of growth (concentration should be appropriate, so as not to add important harm).
3, timely fertilizer: acid pesticide damage, spreading ground ash or lime. Alkaline pesticides harmed, on the ground dressing fertilizer ammonium sulfate (fertilizer powder) and other acidic fertilizers. No matter which kind of nature pesticide poisoning, the leaves should be sprayed with 0.2-0.3% potassium dihydrogen phosphate for foliar dressing, 10-15 days once, and even spray 2-3 times. Or spray 0.01% brassin.
4, injection of clean water: control of stem borers and other trunk pests, due to excessive drug injection caused by phytotoxicity, should be immediately in the trunk wormhole at the tree to inject a lot of water, and make it flow out to dilute the pesticide. Such as acidic pesticide poisoning, add appropriate amount of lime in the injected water to accelerate the decomposition of pesticides.
5, loose soil / soil: cultivator loose soil (10 ~ 15 cm), increase phosphorus and potassium fertilizer, promote root growth.
6, appropriate amount of pruning: cut off dead branches, timely removal of dead leaves, to prevent the death of dead branches and leaves consumption of water evaporation of the trees increase the injury and death.
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