Claims
- 1. A fungicidal composition comprising a fungicidally acceptable carrier and/or surface active agent and synergistically effective amounts of(a) at least one azolopyrimidine of formula I in which R1 represents a C1-6 alkyl, C3-6 alkenyl or C1-6 haloalkyl group, and R2 represents a hydrogen atom or a C1-6 alkyl group, or R1 and R2 taken together represent a C3-8 alkylene group; L1 represents a halogen atom; and L2 and L3 each independently represent a hydrogen or a halogen atom; and (b) at least one fungicidal active ingredient selected from the group consisting of benomyl, carboxin, captan, chlorothalonil, copper oxychloride, cyprodinil, dimethomorph, dithianon, dodine, famoxadone, fenhexamid, fenpiclonil, fenpropimorph, fluazinam, mancozeb, metalaxyl, pyrimethanil, quinoxifen, sulfur, triforine and vinclozolin.
- 2. A composition as claimed in claim 1 wherein in the compound of formula I
- 3. A composition as claimed in claim 2, wherein the azolopyrimidine is selected from the group consisting of: 5-chloro-6-(2-chloro-6-fluorophenyl)-7-(4-methylpiperid-1-yl) [1,2,4]triazolo[1,5-a]pyrimidine, 5-chloro-6-(2-chloro-6-fluorophenyl)-7-(2,2,2-trifluoroethylamino) [1,2,4]triazolo[1,5-a]pyrimidine, and 5-chloro-6-(2,4,6-trifluorophenyl) 7-(1,1,1-trifluoroprop-2-ylamino) [1,2,4]triazolo[1,5-a]pyrimidine.
- 4. A composition as claimed in claim 1, wherein the ratio (by weight) of the fungicidal compound (b) to the azolopyrimidine of formula I (a) is approximately from 0.01:1 to 100:1.
- 5. A method of controlling the growth of phytopathogenic fungi at a locus which comprises applying an effective amount of the composition defined in claim 1 to the locus.
- 6. The method of claim 5 wherein the phytopathogenic fungi are wheat leaf rust, wheat Septoria leaf blotch or wheat powdery mildew.
- 7. The composition defined in claim 1 wherein at least one fungicidal active ingredient is selected from the group consisting of benomyl, carboxin, captan, chlorothalonil, copper oxychloride, cyprodinil, dimethomorph, dithianon, dodine, famoxadone, fenpiclonil, fenpropimorph, fluazinam, mancozeb, metalaxyl, pyrimethanil, quinoxifen, sulfur, triforine and vinclozolin.
- 8. A composition as claimed in claim 7 wherein in the compound of formula I
- 9. A composition as claimed in claim 8, wherein the azolopyrimidine is selected from the group consisting of: 5-chloro-6-(2-chloro-6-fluorophenyl)-7-(4-methylpiperid-1-yl)[1,2,4]triazolo[1,5-a]pyrimidine, 5-chloro-6-(2-chloro-6-fluorophenyl)-7-(2,2,2-trifluoroethylamino) [1,2,4]triazolo[1,5-a]pyrimidine, and 5-chloro-6-(2,4,6-trifluorophenyl)-7-(1,1,1-trifluoroprop-2-ylamino) [1,2,4]triazolo[1,5-a]pyrimidine.
- 10. A composition as claimed in claim 7, wherein the ratio (by weight) of the fungicidal compound (b) to the azolopyrimidine of formula I (a) is approximately from 0.01:1 to 100:1.
- 11. A method of controlling the growth of phytopathogenic fungi at a locus which comprises applying an effective amount of the composition defined in claim 7 to the locus.
CROSS-REFERENCE TO RELATED APPLICATION(S)
This is a Divisional of application Ser. No. 09/809,512, filed Mar. 15, 2001, now U.S. Pat. No. 6,518,275 which is a dicisional of application Ser. No. 09/404,910, filed Sep. 24, 1999 (U.S. Pat. No. 6,277,856 B1), the entire disclosure of which is hereby incorporated by reference.
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