Common plant source fungicide types
Summer is the peak period of succulent diseases and pests. The author joereil below, for the preparation of some succulents, can use fungicides and insecticides, indicating the control objects, characteristics, and harm to the human body. I have to be clearer and hope to help everyone.
The insecticidal sterilizing drugs in this paper are mainly for pure products. Some compound preparations (such as 蚧必治, 护花神, etc.) are too numerous and complex, and are not listed one by one.
Carbendazim
25% powder diluted 200-500 times
Highly effective and low toxicity systemic fungicide with systemic treatment and protection.
Low toxicity to people, animals, fish, bees, etc. Irritating to the skin and eyes, dizziness, nausea, vomiting by oral poisoning; may cause genetic damage; may damage fertility; may cause harm to the fetus; highly toxic to aquatic organisms, may cause long-term effects on the aquatic environment Adverse effects
This agent should not be mixed with strong alkaline agents or copper-containing agents, and should be used with other pharmaceutical agents. Do not use carbendazim for a long time, or use it with similar drugs such as thiophanate, benomyl and thiophanate.
Chlorothalonil
75% powder 400-1000 times
It is a highly effective, broad-spectrum fungicide that replaces benzene and has a protective effect. It is stable to weak acid, weak base and photothermal, and has no corrosive effect. It is easy to stick on the surface of plants and is resistant to rain. The residual effect period is generally 7-10 days.
Low toxicity, it has obvious stimulating effect on rabbit eyes and cornea, it can produce corneal opacity, and it is irreversible. It has obvious stimulating effect on some human eyes, but no corneal opacity is found. It has a stimulating effect on a few people's skin. Very toxic to fish. No teratogenic or mutagenic effects under the test conditions.
Mancozeb
80% powder 400-700 times
An excellent protective fungicide, a low-toxic pesticide . Due to its wide range of sterilization and resistance to resistance, the control effect is obviously superior to other similar fungicides, so the international use has always been a large tonnage product.
When storing, care should be taken to prevent high temperatures and to keep it dry so as not to decompose the agent under high temperature and humidity conditions and reduce the efficacy.
In order to improve the control effect, it can be mixed with a variety of pesticides and fertilizers, but it cannot be mixed with alkaline pesticides, chemical fertilizers and copper-containing solutions.
The agent has a stimulating effect on the skin and mucous membranes, and attention should be paid to the protection when used.
Toxic to fish, not to pollute the water source.
Pentachloronitrobenzene
Organic nitrogen protective fungicide, mainly used for soil and seed treatment. It has good control effect on seedling diseases and soil-borne diseases of various vegetables.
Mixing pentachloronitrobenzene with 50% carbendazim wettable powder in a ratio of 1:1 and seed dressing or soil treatment can expand the types of disease prevention and improve the control effect.
A large amount of the agent is susceptible to phytotoxicity when it comes into contact with the shoots of the crop.
Wear protective clothing, pants, masks, gloves to prevent contact with the skin and inhalation from the nose and mouth. Smoking, drinking, and eating are strictly prohibited during operation. Pay attention to moisture and sun exposure during storage, keep well ventilated, and do not mix with food, seeds, feed, etc.
If it causes redness, tearing, conjunctivitis, etc. to the eye during use, you should go to the hospital immediately and ask a doctor for treatment. Symptomatic treatment can be used if poisoning occurs due to misuse
Thiophanate-methyl (methyl thiophanate)
50% powder 400-1500 times
Broad-spectrum systemic low-toxic fungicide with systemic, prophylactic and therapeutic effects
Cannot be mixed with alkaline and inorganic copper preparations. Long-term single use is easy to produce resistance and cross-resistance with benzimidazole fungicides, should be noted with other pharmaceuticals. Splashing liquid into the eyes can be rinsed with water or 2% soda
Pyridoxine (DuPont Aunt)
22.5% suspension agent 1500-2000 times
Systemic fungicides, broad-spectrum control targets, mainly used to control wheat leaf foliar diseases such as leaf blight, leaf rust, arrow blight, brown spot, powdery mildew, etc., and other methoxy acrylate sterilization Compared with the agent, picoxystrobin has a stronger therapeutic effect on wheat leaf blast, net blotch and moiré.
Imidacloprid
10% powder 4000-6000 times
Nicotinic super-efficient insecticides have broad-spectrum, high-efficiency, low-toxicity, low-residue, pests are not easy to produce resistance, and are safe for humans, animals, plants and natural enemies, and have multiple effects such as contact, stomach poisoning and systemic absorption. effect. After the pests are exposed to the agent, the normal conduction of the central nervous system is blocked, causing paralysis to die. The product has good quick-acting effect, and has high control effect 1 day after the medicine, and the residual period is as long as about 25 days. The drug effect and temperature are positively correlated, the temperature is high, and the insecticidal effect is good. It is mainly used to control pests such as spirochete mouthworms such as Spiraea japonica, apple sputum, peach aphid, pear hibiscus, leaf roller moth, whitefly, and leaf larvae. The landlord likes to use it to deal with the black, the effect is first-class.
Do not mix with alkaline pesticides. It is not advisable to spray under strong sunlight to avoid reducing the efficacy. Pay attention to the protection when applying the medicine, prevent contact with the skin and inhaled powder, liquid medicine, and wash the exposed parts with water in time. Inadvertent inhalation, the patient should be moved to the air circulation. Inadvertently splashed into the eyes, rinse with plenty of water for 15 minutes, and sent to hospital for treatment. In case of accidental poisoning, the patient should be taken to the hospital immediately with this label. This product has no special antidote, doctors respond to the treatment.
Chlortetracycline
20% powder 600-800 times
An insect growth regulator low-toxic insecticide with very strong selectivity, mainly active against Diptera insects. The mechanism of action is to distort the larvae and mites of Diptera insects, and the adults are incomplete or inhibited. The drug has a contact and stomach toxicity, and has strong systemic conductivity, and has a long-lasting effect, but the action speed is slow. Chlortetracycline has no toxic side effects on humans and animals, and is environmentally safe.
Can not be mixed with alkaline agents. Note the use of agents with different mechanisms of action to reduce the development of pest resistance. When spraying, if 0.03% of silicone or 0.1% of neutral detergent is added to the liquid, the effect of the agent can be significantly improved. The preparation should be stored in a cool, dry place.
Avermectin
2% emulsifiable concentrate 1000-1500 times
Avermectin is a widely used agricultural or veterinary insecticide and acaricide (red spider is also a mites).
Abamectin has stomach poisoning and contact killing on mites and insects and cannot kill eggs. The mechanism of action differs from that of general insecticides in that it interferes with neurophysiological activities and stimulates the release of gamma-aminobutyric acid, which inhibits the nerve conduction of arthropods. When mites, nymphs and insect larvae come into contact with avermectin, paralysis symptoms appear, inactivity, no feeding, and death after 2 to 4 days. The avermectin lethal effect is slower because it does not cause rapid dehydration of insects.
Wear protective measures when wearing the medicine, wear a mask, etc. To be highly toxic to fish, it should avoid polluting water sources and ponds. It is highly toxic to silkworms. After 40 days of spraying, mulberry leaves are also obviously poisonous to kill silkworms. Bees are poisonous and should not be applied during flowering.
Butyl fluoro ester
20% suspension agent 1500-2500 times
The novel acyl acetonitrile acaricide has no cross-resistance with existing insecticides. It is effective against both eggs and mites of spider mites, and has higher activity on sputum. According to the experimental comparison, the effects of butaflurane were superior to those of spironolactone and avermectin.
Mainly used for citrus red spiders. It is effective against cotton red spider and tumor red spider, and it is used to control red leafhopper and whole claw leafhopper. It also has good control effects on pests such as Plutella xylostella, Spodoptera litura, Chilo suppressalis, Rice planthopper, and peach aphid, as well as diseases such as rice blast, powdery mildew and downy mildew.
It has no phytotoxicity to various plants and is safe for non-target organisms such as mammals and aquatic organisms, beneficial organisms and natural enemies.
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