Patent DE-102005043459-A1 (DE)
Title: Herbicide/safener combination for controlling unwanted and harmful plants e.g. Echinochloa or Scirpus comprises component A containing 4,5-dihydroisoxazole compound, and component B containing safener
Inventor: ROSINGER CHRIS
IPC: A01P13/00
Filed: 2005-09-13
Abstract: A herbicide/safener combination comprises: component (A) containing at least one 4,5-dihydroisoxazole compound or its salt, and component (B) containing at least one safener. A herbicide/safener combination comprises: component (A) containing at least one 4,5-dihydroisoxazole compound of formula (I) or its salt, and component (B) containing at least one safener. R 1and R 21-6C alkyl, 2-6C alkenyl, 2-6C alkynyl, 3-8C cycloalkyl, 1-6C alkanoyl, 1-6C alkoxycarbonyl, mono(1-6C alkyl)aminocarbonyl and di(1-6C-alkyl)aminocarbonyl (all optionally substituted by at least one radical selected from halo, cyano, 3-8C cycloalkyl, -OR 6and -SO mR 6), phenyl or optionally saturated heterocyclyl containing at least one hetero atom (both optionally substituted by at least one radical selected from 1-6C (halo)alkyl, halo, cyano, 3-8C cycloalkyl, -OC(R 7) 3, and -SC(R 7) 3), H or cyano; m : 0 - 2; R 61-6C-alkyl, 2-6C-alkenyl, 2-6C-alkynyl or 3-6C-cycloalkyl (all optionally substituted by at least one radical selected from halo and cyano); R 7H, F or Cl; CR 1R 2a 3-7C spiro linkage; R 3and R 41-6C alkyl, 2-6C alkenyl, 2-6C alkynyl or 3-8C cycloalkyl (all optionally substituted by at least one radical selected from halo, nitro, cyano, 3-6C cycloalkyl, 1-6C (halo)alkoxy and 1-6C alkylthio) or H; CR 3R 4a 3-7C spiro linkage or a 5-8C ring structure; R 5(hetero)aryl (optionally substituted by T 1); T 1OH, halo, cyano, 1-6C (halo)alkyl, 2-6C alkenyl, 2-6C alkynyl, 3-6C cycloalkyl, 3-6C cycloalkenyl, mono(1-6C alkyl)amino, di(1-6C alkyl)amino, N-(1-6C alkanoyl)amino, 1-6C (halo)alkoxy, 3-6C alkenyloxy, 3-6C alkynyloxy, 3-6C cycloalkoxy, 4-6C cycloalkenyloxy, 1-6C (halo)alkylthio, 3-6C cycloalkylthio, 3-6C alkenylthio, 4-6C cycloalkenylthio, 3-6C alkynylthio, 1-6C alkanoyl, 2-6C alkenylcarbonyl, 2-6C alkynylcarbonyl, arylcarbonyl, 1-6C alkoxycarbonyl, 3-6C alkenyloxycarbonyl, 3-6C alkynoxycarbonyl, aryloxycarbonyl, 1-6C (halo)alkylsulfinyl or 1-6C (halo)alkylsulfonyl (all alkyl and (halo)alkoxy radicals are optionally linked cyclically with one another when they are in ortho position); n : 1 - 2; X : H or 1-4C alkyl; and Y' : H. Independent claims are included for the following: (1) 4,5-dihydroisoxazole compound of formula (I') or its salt as new; (2) a method (m1) for controlling unwanted plants, involving applying the components (A) and (B) of the herbicide/safener combination either together or separately, to the plants, the seed or the area on which the plants grow; (3) a method (m2) for controlling harmful plants, involving applying the herbicide/safener combination to the plants, the seed or the area on which the plants grow. R 5phenyl (optionally di-substituted by T 1). [Image] [Image] ACTIVITY : Herbicide. The pre-emergence action of the 3-{[(6-chloro-1,3-benzodioxol-5-yl)methyl]sulfonyl}-5,5-dimethyl-4,5-dihydroisoxazole (A)/mefenpyr-diethyl (B) combination against monocotyledonous and dicotyledonous weed was determined. Seeds or rhizome pieces of monocotyledonous and dicotyledonous weed plants (e.g. Sinapis alba) were placed in sandy loam soil in cardboard pots and covered with soil. The active compounds (A) and (B), formulated in the form of wettable powders or emulsion concentrates, were then applied to the surface of the covering soil in various dosages as aqueous suspensions or emulsions using a water application rate of 300 - 800 l/hectare. After the treatment, the pots were placed in a greenhouse and kept under good growth conditions for the weeds. Optical scoring of the damage to the plants or emerged plants was carried out after emergence of the test plants after a trial period of 3 - 4 weeks, in comparison to untreated controls. The tested (A)/(B) combination have good herbicidal pre-emergence activity against a broad spectrum of weed grasses and broad-leaved weeds at an application rate of = 500 gm of 3-{[(6-chloro-1,3-benzodioxol-5-yl)methyl]sulfonyl}-5,5-dimethyl-4,5-dihydroisoxazole (A) per hectare. MECHANISM OF ACTION : Plant growth inhibitor; Plant protectant.