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Pratylenchus is a genus of nematodes known commonly as lesion nematodes. They are parasitic on plants and are responsible for root lesion disease on many taxa of host plants in temperate regions around the world. Lesion nematodes are migratory endoparasites that feed and reproduce in the root and move around, unlike the cyst or root-knot nematodes, which may stay in one place. They usually only feed on the cortex of the root. Species are distinguished primarily by the morphology of the stylets.
Use of dimethyl trisulfide
The application belongs to the technical field of agricultural pest control, and discloses an application of dimethyl trisulfide. The dimethyl trisulfide is applied to a nematicide, and through the determination of the mortality of Bursaphelenchus xylophilus, Meloidogyne incognita and Pratylenchus penetrans, it is found that fumigation and immersion have good killing effects on the three kinds of nematodes. For fumigation, the median lethal concentration of Bursaphelenchus xylophilus is 0.0265 μL / L at 24 h, and the median lethal concentrations of Meloidogyne incognita and Pratylenchus penetrans are 0.1303 μL / L and 0.01786 μL / L at 72 h respectively; for nano-emulsion immersion, the median lethal concentrations of Bursaphelenchus xylophilus, Meloidogyne incognita and Pratylenchus penetrans are 0.0072 mg / mL, 0.0832 mg / mL and 0.0461 mg / mL respectively. The application provides a new choice for the preparation of a new nematicide.
Owner:GUANGXI ZHUANG AUTONOMOUS REGION ACAD OF AGRI SCI