Synergistic herbicide mixt. - contains substd. N-phenoxy-sulphonyl-N'-(4,6-di:substd. pyrimid-2-yl)urea and another herbicide

摘要

Herbicide contains (A) a substd. N-phenoxy sulphonyl-N'- (4,6-disubstd. pyrimid-2-yl) urea deriv. of formula (I) and (B) one, two or more of the following cpds. (B1) quinchlorac and its salts, (B2) Molinate, (B3) thiobencarb, (B4) butachlor, (B5) pretilachlor, (B6) MON-7200 dithiopyr, (B7) mefeiacet, (B8) feroxapropethyl, (B9) M7-93 dimepiperate, (B10) pyrazolylate (pyrazolate), (B11) pyrazoxyfen, (B12) benzoferap, (B13) naproanilid, (B14) bensulfuron methyl, (B15) pyrazosulfuron ethyl, (B16) cinosulfuron, (B17) perfuresate, (B18) bromobutide, (B19) dymuron (diamuron), (B20) dimethametryn, (B21) esprocarb, (B22) pyributicarb (BH-888), (B23) buteiachlor (KH-218), (B24) piperophos, (B25) anilofos, (B26) cinmethylin, (B27) propanil, (B28) imazosulfuron (TH-913), (B23) alpha-chloro-N-(3-methoxy-2-thienyl)-methyl- 2',6'-dimethylacetanilide (NSK-850), (B30) 4-ethoxy-benz-2',3'-dihydrochloro anilide (HW-52), (B23) diethylcarbanoyl-3-(2,4,6- trimethylphenyl- sulphonyl) 1,2,4-triazole (C H-900) (B32) 3-(2-chlorophenyl methyl)-1- (1-methyl-1-phenylethyl) urea (JC-940), (B33) 3-(2-chloro-4-mesylbenzyl)- cyclohexane-1,3-dione (ICIA-0051), excepting combinations of (A) with only cone of (B1)-(B8), (B14), (B16) or (B28). (a1) R1 = EtO, PrO, or iPrO; and R2 = halogen, NO2, CF3, CN, 1-4C alkyl, 1-4C alkoxy, 1-4C alkylthio, or 1-4C alkoxy carbonyl; n = 0-3; or (a2) R1 = opt. unsatd. 1-8C alkoxy (opt. substd. with halogen), opt. unsatd. 1-6C alkoxy, 1-6C alkyl-S, 1-6C alkyl-SO, 1-6C alkyl-SO2, 1-6C alkyl OCO, NO2, CN, Ph, 2-8C alkenyloxy or 2-8C alkynyloxy; R2 = opt. satd. 1-8C alkyl, Ph, PhO, 1-4C alkoxy, 1-4C alkylthio, 1-4C alkoxycarbonyl (all these gps. opt. substd. with halogen, 1-4C alkoxy, or 1-4C alkylthio), halogen,, NO2, 1-4C alkylsulphinyl or 1-4C alkyl sulphonyl and n = 0-3; or (a3) R1 = 1-8C alkoxy; and R2 = 2-8C alkenyl, 2-8C alkynyl, Ph or PhO (all these gps. opt. substd. with halogen, 1-4C alkoxy or 1-4C alkylthio) or 1-4C alkylsulphonyl or 1-4C alkyl sulphinyl; and n = 1-3; or (a4) R1 = Ph, halogen MeO, Et, or Pr, each in position 2; and R2 = 1-4C alkoxy carbonyl in position 6; and n = 1; and in all cases (a1)-(a4) R3 = H, opt. satd. 1-8C alkyl or 1-4C alkoxy; R4 and R5 = each H, halogen, 1-4C alkyl, 1-4C alkoxy, 1-4C alkylthio, (these last 3 gps. opt. substd. with halogen, 1-4C alkoxy or 1-4C alkylthio; Y = O or S; E = CH or N. USE/ADVANTAGE - The combination of components (A) and (B) is synergistic and can be used for the selective control of weeds in crops, esp. in wheat, barley, rye, rice and maize. The combination is effective against monocotyledon, and dicotyledon weeds, in partic. against monocotyledon weeds such as Alopecurus myosuroides, Avena fatua, Echinochloa crus-galli and Setaria viridis and weeds which flourish in rice cultures, e.g. Sagittaria, Alisma, Eleocharis, Scirpus and Cyperus. The amts. of (A) and (B) applied are 10-100 g (A)/ha and 0.02-4.0 kg (B)/ha.