Pesticides are lowly toxic and must be protected when used. After spraying fruits and vegetables, do not rush to pick them. The fungicide mentioned earlier, mentioning the safety interval, that is, how many days after spraying, the pesticide residue of the plant will not exceed the pesticide residue standard stipulated by the state. Because now many people are willing to raise some small fruit trees on the balcony or terrace, or plant some vegetables to experience the fun of planting. When you play it, you can watch it and eat it yourself. Therefore, this safety interval is especially important for fruits and vegetables sprayed with pesticides, so it is best not to pick during this time period to avoid poisoning. It has been a long time since the introduction of this pesticide in the market today, and people living in the city may not know much about it, but for me, who used to run to the countryside when I was a child, the pesticide I heard the most was it. So what pesticide is it? It is a very good effect on killing moth and butterfly larvae. I will combine some pests that can be controlled below, and talk about what it should pay attention to when using it, how to use it, etc., I hope you like it.
Dimethoate powder packaging
Dichox is also known as triclosone, poison bully, debiao, Reston, lychee net and so on. Divided into agricultural agents and veterinary agents, veterinary agents can prevent pigs, cattle, horses, mules and other livestock surface parasitism of insect lice, veterinary agents here do not do much to introduce, when purchasing need to see the type of agent, if the livestock in the family has insect lice, do not blindly use agricultural agents to kill, or consult the veterinarian and then do treatment, so as not to make unnecessary losses. Dinoflagellus is a highly efficient, low-toxicity, low-residue, high-spectrum organophosphorus insecticide. The mechanism of action is that after the pest swallows the plant tissue with the solution, the solution inhibits the vitality of the inner cholinesterase in the pest, so that the acetylcholine produced by the pest cannot be decomposed into choline and acetic acid, blocking the nerve conduction of the pest and causing the pest to die.
Common dosage forms are 30% emulsion, 80%, 90% soluble powder, 80%, 90% crystals, etc. After spraying, the agent has a strong gastric toxic effect on pests, and also has a touch killing effect. It can effectively control dipteran, lepidoptera, Coleoptera pests, and has poor control effect on pests with sucking mouthparts such as mites and some aphids (if you want to know more about pests, you can go to my last article "Atlas of Common Pests" where there is a detailed description). It has an osmotic effect on plants [note (1)], but no internal absorption effect [note (2)]. Enemy insects can also be mixed with stir-fried rapeseed cake, or mixed with sugar, vinegar and water to make poisonous bait to kill underground pests such as tigers, lóu gū ( lóu gū ) , and larvae of breeding flies.
Illustration of dipteran pest leafminer larvae endangering plant leaves
Lepidoptera brown-edged green thorn moth larvae harmful to leaves illustrated
Coleoptera, whose larvae are borer rod pests.
Enemy insects are very susceptible to medicinal harm to sorghum, and there are also medicinal harms to seedlings of corn, beans and melons, so do not spray the above plants when controlling pests. Stop spraying 7 days before fruit and vegetable picking, if there are silkworm farmers near fruits and vegetables, please take precautions to avoid the liquid from drifting onto the mulberry leaves and causing silkworm poisoning. The liquid medicine should be used now, because the drug has a taste close to sweetness, so after use, put it in a place that children can't reach, so as not to eat it by mistake. If you eat it by mistake, you can take atropine drugs to detoxify, and send it to the hospital for gastric lavage, avoid gastric lavage with alkaline liquid, because the enemy worms will generate toxic dichlorvos under the action of alkaline agents, which will cause secondary poisoning. When spraying agents, you should do a good job of protection, wash your hands with water after spraying, face and other exposed parts, do not use soap, alkaline hand sanitizer, etc., so as not to increase toxicity.
Pest Control Legend:
蛴螬(qí fox)
Grubs, also known as white earth silkworms and walnut worms, are the larvae of the Coleoptera scarab insects, which harm the rhizomes under the plants.
Black velvet golden turtle
The larvae of the Coleoptera scarab beetle are subterranean pests. Feeding on the underground rhizomes of the plant, there is no specific symptom of pest infestation on the plant, if there are more insects, the plant will die due to root damage. The harm is more rapid to appear is the plant seedling stage, the previous day to see the seedling is still very healthy, after a night may be the bottom of the rhizome will be eaten, pull out the seedlings have no root system.
Control method: When fertilizing, be sure to use decomposed organic fertilizer, because the uncorrupted organic fertilizer has a strong tendency to scarab beetles, leafminer flies, seed flies, etc., and will lay eggs in it. If you take soil to plant flowers in the wild, you should put the soil under the hot sun for a period of time and then use it, so that you can kill some pests and have a bactericidal effect. If you are afraid that the soil taken from the wild is not safe, you can spray or water with 30% dimethodium emulsion 500 times liquid or 80% diphthalm soluble powder 1000 times liquid. It can also be mixed into the soil with octyl thion granules when mixing the soil, and choose one of the two agents, because both are organophosphorus insecticides with gastric toxic effects.
Twill nocturnal moth
The larvae of the twill moth, the older the insect, the greater the amount of food.
Twill nocturnal moth adult
Lepidoptera noctiaceae , the larvae are chewing mouthparts that mainly harm plant leaves , buds , flowers and fruits. In severe cases, the leaves can be eaten up, resulting in falling flowers, buds, flowers not opening. Adult insects do not harm plants and are named after their nocturnal activities.
Control method: Adult insect chemotaxis can be used, according to sugar: vinegar: wine: water = 3:4:1:2 plus a small amount of enemy insects ratio into induce venom to trap adult insects. Due to the large size of the twill moth larvae, it can be found on the back of the leaf after it is found to be eaten, and when it is found, it is removed by hand and thrown away. If there are more insects, or if there are more plants, it can be controlled with drugs. Plant leaves can be sprayed with 80% dimethotripsy 1000 times liquid, or 10% pyridine (bǐ) nepenthecarpine (lín) wettable powder 2500 times liquid control.
Well, the enemy insects are introduced to this, this drug has a good control effect on chewing mouthpart pests, but the pest control effect of the stinging suction type and file suction mouthpiece is not good, do not think that it is a universal agent, if the pest produces resistance, it is also necessary to rotate the use of other agents to control.
Plants, talk about plants, talk about plants!
Note (1): Osmosis refers to the effect of cell fluid exchange in plant cells due to the high concentration of external solution, and the medicinal solution inside the solution will enter the cell through the cell wall.
Note (2): The effect of internal suction transmission means that the medicinal solution can enter the plant through the stomata of the plant, and through the vascular bundle to enter various parts of the plant, thus playing the purpose of killing pests with poison in the whole plant.