1. What is an insect pathogen nematode
Entomopathogenic nematode refers to a class of pathogenic nematodes of an obligate parasitic insect, which carries pathogenic bacteria in the digestive tract, when it invades the insect host from the insect digestive tract or body wall, the symbiotic bacteria are released from the nematodes, proliferating in the blood of insects, and eventually causing the host insect to infect pathogenic bacteria with sepsis and die.
2. The role of insect pathogen nematodes
Insect pathogen nematodes are a biological predator of underground pests, with a wide range of hosts, good control effect on underground and borer moth pests, each insect pathogen nematode will be associated with a bacterium belonging to the enterobacteriac family Nematode pathogenic bacillus (Xenorhabdus), as a pest "roundworm" together with its transformative symbiotic bacteria to kill the host pest.
3. What is an underground pest
Underground pests refer to omnivorous insects that live in the soil at a certain stage of life or in the soil to harm the underground parts, seeds, seedlings or near-soil surface main stems, mainly including leek maggots, maggots, ground tigers, jumping beetles, golden needle worms, etc., with many types, wide distribution and great harm. Underground pest control is a non-negligible link in agricultural planting and production.
4. Insect pathogen nematode control object
Insect pathogen nematodes are mainly used to control the harm of underground pests, such as leek maggots, grubs, ground tigers, jumping beetles, peach small heartworms and so on.
5. Insect pathogen nematodes are suitable for crops
Suitable for crops harmed by leek maggots: such as leeks, garlic, green onions, edible mushrooms, etc.
Chinese medicinal herbs, fruit trees, vegetable fields, green lawns, etc. harmed by grubs and ground tigers: such as peanuts, potatoes, Chinese herbal medicines (honeysuckle, salvia, etc.), cherries, sweet potatoes, etc.
Crops harmed by jumping nails, peach heartworms, and ground tigers: tobacco, park green space, Chinese medicinal herbs, fruit trees, etc.
6. How to control insect pathogenic nematodes
Insect pathogen nematodes enter the pest through the mouth, body wall or anus of the pest, and after entering the pest, the insect pathogen nematode releases commensal bacteria, and the symbiotic bacteria secrete toxins to destroy the physiological defense function of the insect, so that the insect dies within 24-48 hours of sepsis.
At the same time, insect pathogen nematodes and symbiotic bacteria jointly consume the nutrients in the pest's body for their own reproduction, until the pest's influence substance is consumed, and the larva crawls out of the insect body during the infection period and continues to look for the host insect, thus forming a sustainable control of the insect pathogen nematode.
7. Advantages of insect pathogen nematodes
As an ideal biological insecticide, insect pathogen nematode has the following advantages: transpositism of insects, a wide range of hosts, active search ability for host insects, insects have no resistance to nematodes, have fast self-proliferation, are safe and harmless to humans, animals, plants and beneficial organisms, and can be mixed with many chemical pesticides when applied in the field, and can be applied with traditional spraying equipment.