Post by ehsanulh125 on Jan 8, 2024 23:51:19 GMT -6
Although plant parasitic nematodes belong to nematode hazards, they are not plant pests, but plant diseases. Plant nematode disease refers to a type of nematode that can parasitize various tissues of plants, cause plant stunting and transmit other plant pathogens while infecting the host, causing symptoms of plant disease. Plant parasitic nematodes that have been discovered so far include root-knot nematodes, Pine wood nematodes, soybean cyst nematodes and stem nematodes, foreign nematodes, etc. Take root-knot nematode as an example: Root-knot nematodes are a very important class of plant pathogenic nematodes that are widely distributed throughout the world. In tropical and subtropical regions with abundant rainfall and mild climate, the damage caused by root-knot nematodes is particularly serious.
Since most nematode diseases occur Country Email List on the roots of plants, it is difficult to apply pesticides. And it is very easy for generations to overlap in vegetable greenhouses, which seriously occurs, so root-knot nematodes are generally difficult to control. Root-knot nematode has a wide range of hosts and can parasitize more than 3000 species of hosts such as vegetables, food crops, cash crops, fruit trees, ornamental plants and weeds. After vegetables are infected with root-knot nematode, the above- Ground plants are short, the branches and leaves are shriveled or yellowed, the growth is stunted, the leaf color is lighter than if there is a lack of water, the growth of seriously diseased plants is weak, the plants will in drought, and The whole plant dies in severe cases.
Traditional nematicides can be divided into fumigants and non-fumigants according to the different methods of use. fumigant It includes halogenated hydrocarbons and isothiocyanates, and non-fumigants include organic phosphorus and carbamate. Methyl bromide and chloropicrin are halogenated hydrocarbons, which can inhibit the protein synthesis of root knot nematodes and the biochemical reaction in the respiratory process; carbonosulfan and methyllong belong to Isothiocyanate fumigants, which can inhibit the respiration of root knot nematodes to death. Non-fumigation type Among the non-fumigant nematicides, thiazolphos, phoxim, phoxim and chlorpyrifos belong to organic phosphorus, carbofuran, aldicarb and carbofuran belong to carbamate. Non-fumigant nematicides destroy the nervous system function of root knot nematodes by binding to acetylcholinesterase in the synapses of roots Knot nematodes.
Since most nematode diseases occur Country Email List on the roots of plants, it is difficult to apply pesticides. And it is very easy for generations to overlap in vegetable greenhouses, which seriously occurs, so root-knot nematodes are generally difficult to control. Root-knot nematode has a wide range of hosts and can parasitize more than 3000 species of hosts such as vegetables, food crops, cash crops, fruit trees, ornamental plants and weeds. After vegetables are infected with root-knot nematode, the above- Ground plants are short, the branches and leaves are shriveled or yellowed, the growth is stunted, the leaf color is lighter than if there is a lack of water, the growth of seriously diseased plants is weak, the plants will in drought, and The whole plant dies in severe cases.
Traditional nematicides can be divided into fumigants and non-fumigants according to the different methods of use. fumigant It includes halogenated hydrocarbons and isothiocyanates, and non-fumigants include organic phosphorus and carbamate. Methyl bromide and chloropicrin are halogenated hydrocarbons, which can inhibit the protein synthesis of root knot nematodes and the biochemical reaction in the respiratory process; carbonosulfan and methyllong belong to Isothiocyanate fumigants, which can inhibit the respiration of root knot nematodes to death. Non-fumigation type Among the non-fumigant nematicides, thiazolphos, phoxim, phoxim and chlorpyrifos belong to organic phosphorus, carbofuran, aldicarb and carbofuran belong to carbamate. Non-fumigant nematicides destroy the nervous system function of root knot nematodes by binding to acetylcholinesterase in the synapses of roots Knot nematodes.
