PROBLEM TO BE SOLVED: To provide a control technique that is excellent in paralysis and lethal effect on root-knot nematode as well as that is high in safety against livestock and crops, and also has little influence on the environment and soil ecosystem.SOLUTION: Provided are: a root-knot nematode control agent containing, as an active ingredient, one or more organic acid selected from maleic acid, cinnamic acid or salicylic acid as a component (A), and one or more dicarboxylic acid selected from fumaric acid, succinic acid or derivatives thereof as a component (B) and a root-knot nematode control agent in which the contained mass ratio of the component (A) and the component (B) ((A) :(B)) is 1:1 to 1:200.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】ネコブセンチュウに対する麻痺・致死効果に優れるとともに、人畜及び作物に対する安全性が高く、環境や土壌生態系への影響も小さい防除技術の提供。【解決手段】成分(A)としてマレイン酸、ケイ皮酸又はサリチル酸より選ばれる1種又は2種以上の有機酸と、更に成分(B)として(B)フマル酸、コハク酸又はこれらの誘導体より選ばれる1種又は2種以上のジカルボン酸類と、を有効成分として含有、ネコブセンチュウ防除剤。成分(A)と成分(B)の含有質量比((A):(B))が1:1~1:200であるネコブセンチュウ防除剤。【選択図】なし
