Peanut root-knot nematodes are most sensitive to imidacloprid.

Release Date:

2018-11-03

Researchers from the College of Forestry at Henan University of Science and Technology used the immersion method to determine the toxicity of imidacloprid against second-stage juveniles of the peanut root-knot nematode, as well as against Pratylenchus coffeae, Bursaphelenchus xylophilus, Bursaphelenchus mucronatus, and Ditylenchus dipsaci, under varying concentrations and exposure times. They also assessed its inhibitory effect on egg hatching of the peanut root-knot nematode. The results indicated that the peanut root-knot nematode was most sensitive to imidacloprid, whereas Ditylenchus dipsaci exhibited the lowest sensitivity. At a concentration of 100 g/L, after 48 hours of treatment, the mortality rates of imidacloprid against the peanut root-knot nematode, Pratylenchus coffeae, Bursaphelenchus mucronatus, Bursaphelenchus xylophilus, and Ditylenchus dipsaci were 91.00%, respectively.

　　Researchers from the College of Forestry at Henan University of Science and Technology used the impregnation method to determine the effects of imidacloprid formulations at various mass concentrations and exposure durations on… Peanut The virulence against second-stage juveniles of root-knot nematodes, as well as against Pratylenchus coffeae, Bursaphelenchus xylophilus, and Ditylenchus destructor, was assessed, and its effects on… were also examined. Peanut Egg hatching inhibition rate of root-knot nematodes.
　　The results indicate that, Peanut Root-knot nematodes are most sensitive to imidacloprid, whereas stem nematodes are the least sensitive. At a mass concentration of 100 g/L, 48 hours after treatment, imidacloprid exhibits… Peanut The mortality rates of Meloidogyne incognita, Pratylenchus coffeae, Bursaphelenchus xylophilus, and Ditylenchus dipsaci were 91.00%, 65.70%, 45.70%, and 44.00%, respectively, while that of Radopholus similis was 9.67%. To… Peanut The egg hatching inhibition rate of root-knot nematodes increased with increasing concentration of the treatment.
　　As of the end of September 2018, China had approved the registration of four imidacloprid products—each a formulated combination with abamectin—for the control of plant nematode diseases. The registered crops and target pests include: Peanut Root-knot nematodes, small cutworms, grubs, mole crickets, fritillary grubs, and tomato root-knot nematodes.