In agricultural production, in order to obtain a bumper harvest, not only to fight against drought, flooding, frost damage, fierce winds and other natural disasters, but also with the harm to crops of various diseases and insect pests to fight, for more than 100 years, a variety of insecticides and fungicides have been developed, and played an important role in the prevention and control of diseases and insect pests. However, due to the use of a large number of highly efficient chemical pesticides, it not only pollutes water, soil and air, but also pollutes agricultural products, which seriously threatens the safety of human beings themselves. After entering this century, scientists are looking for the use of various substances in nature to achieve the purpose of controlling diseases and insect pests, through the efforts of researchers, a very good fungal insecticide was discovered, this fungus is coccidioides albicans.
Introduction to Bulbophyllum albicans
Coccidioides are ascomycete subphylum fungi, is an insect parasitic fungus, this fungus after contact with pests, under the appropriate temperature and humidity conditions, it can germinate directly into the pest body, to the pest body blood cells and other tissue cells as nutrients, a large number of proliferation, a large number of hyphae produced by this fungus and then penetrate the body surface, in the pest outside the body to produce a large number of white powdery conidia, so that the pest is unconsciously killed. After death, the pest is white zombie, so it is called a white zombie. It has been studied that the fungus can invade more than 200 species of pests and mites in 6 orders and 15 families. It is the natural microbial insecticide with the most insecticidal and the widest range of applications. It is the preferred agent for the production of green, organic agricultural products.
Main advantages
Wide range of insecticide: The fungus is currently the most extensive insecticidal insecticide, not only for the ground cotton bollworm, corn borer, pine caterpillar and other hundreds of pests have a good control effect, the grasshopper, grub, golden needle worm and other underground pests also have a good control effect.
Pest non-resistance: The fungus mainly absorbs the nutrients in the pest's body by infecting the bacteria and multiplying in large quantities to achieve the purpose of completely killing the bacteria, just like the bacillus thuringiensis, no matter how many years of use, the pest will never develop resistance.
Long duration of effectiveness: The fungus can continuously multiply and infect in the field under suitable temperature and humidity conditions to achieve the purpose of continuous insecticidalization, and the effective period can reach more than 90 days, especially in the high temperature and rainy season in summer and autumn, the whole season can be multiplied, and the effective period is longer. The number of applications can be greatly reduced.
Non-toxic and non-polluting: The fungus is widely present in nature, and its production is also produced by fermentation, without any chemicals, and does not produce any pollution and residues on soil, water, air, agricultural products, people and livestock, and aquatic animals.
Highly selective: Although Coccidioides can kill more than 200 species of pests and mites in 16 families, it is also selective and very safe for bees and predatory mites.
Main dosage forms
Due to the wide range of insecticides of this fungal insecticide, the insecticidal effect is good and there is no pollution to the environment. At present, more than 20 manufacturers have registered production, the main dosage forms are: 15 billion spores / g, 30 billion spores / g, 40 billion spores / g coccidioides white zombie wettable powder, 5 billion spores / g, 15 billion spores / g coccidioides suspension agent, 10 billion spores / g, 20 billion spores / g, 30 billion spores / g coccidioides leukosporium dispersible oil suspension, 15 billion spores / g coccidioides white zombie granules, 40 billion spores / g coccidioides white zombie bacteria water dispersible granules.
How to use
The use of Coccidioides albicans is diverse, according to different plants, take different methods, can be used for forest pests flight control, spraying, spraying, soil treatment, irrigation, dipping roots, watering, seed mixing and other use methods, can effectively achieve the purpose of pest control.
Prevention and control objects
Underground pests: grubs, grubs, golden needle worms, ground tigers, two-point nocturnal moths, root-knot nematodes, etc.
Aboveground pests: cotton bollworm, smoke green insect, beet night moth, twill nocturnal moth, cabbage green worm, pine caterpillar, corn borer, dimwat borer, peach small heartworm, bean pod borer, bean moth, locust, potato beetle, aphid, leafhopper, planthopper, small cane borer, blind tsubaki, valley elephant, tianniu, pine leaf bee, pine inchworm, pine borer, pine borer, pine follicle, female virgin moth, sweet potato weevil, wheat borer, cotton red spider, citrus red spider, soybean heartworm, chestnut weevil, golden turtle beetle, leaf beetle, mosquito, ant, stickworm, rice black-tailed leafhopper, rice planthopper, three-way borer, There are more than 200 kinds of pests and mites, such as rice bracts, tea tree small yellow leaf curl moth, tea caterpillar, clover night moth, beet weevil, rape weevil, golden turtle beet, leaf beet, rape inchworm, potato twenty-eight star ladybug, kale nocturnal moth, apple stupid moth and so on.
Use technology
To control forest pests such as pine caterpillars, pine leaf bees, pine inchworms, pine borers, pine folly, etc., 30 billion spores/g dispersible oil suspension can be used to 120-240 ml, add 20 times the volume of No. 0 diesel, and use aircraft ultra-low capacity spray.
To control insect pests such as corn borer, in the peak period of corn borer egg hatching, 350 grams of 10 billion spores/g wettable powder are mixed with 5 kg of fine sand or slag (20-30 sieves) to make granules, and the corn heart leaves are put into the corn heart leaves one by one, each plant is 1 to 2 grams.
Control of aphids, cotton bollworms, beet nocturnal moths, twill moths, smoke insects, vegetable insects and other vegetable pests, can be used at a young age of pests, with 30 billion spores / g dispersible oil suspension agent 40-50 ml per mu, mixed with 30 kg of water evenly sprayed.
To control underground pests such as caddisflies, grubs, golden needle worms, and ground tigers, underground pests can be used before sowing wheat, peanuts, soybeans and other crops, 500 to 1000 grams of 30 billion spores /g wettable powder, plus fine sand or organic fertilizer 10 to 15 kg after mixing evenly, which can effectively control the harm of underground pests.
Special reminder
(1) It is extremely pathogenic to silkworms and is a devastating disease of silkworms, and should not be used in sericulture areas.
(2) White zombie bacteria can only cause pests when they are 24 ~ 28 ° C and the relative humidity is more than 90%, so it is necessary to be at a temperature of 15-30 ° C and a relative humidity of 80% to 100%. It should generally be sprayed on cloudy days, after rain, or in the morning and evening when the humidity is high.
(3) In the field with large insect population density, especially the large insect age, it can be mixed with low-dose chemical insecticides such as avermectin and methylphenidate, which can give full play to the quick-acting of chemical insecticides and the effectiveness of white zombie bacteria.
(4) Coccidioides albicans cannot be mixed with fungicides.
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