Difenoconazole sterepospmeric composition with reduced phytotoxicity
View Patent ↗The present invention relates to a composition and its use in a method for safening the phytotoxic effect of difenoconazole on a plant or plant propagation material. More specifically the composition comprises difenoconazole characterised in that least 40% by weight of said difenoconazole is the 2R, 4S isomer depicted as formula (Ib): and wherein at least 95% by weight of the remaining difenoconazole is the 2S, 4S isomer depicted as formula (Id):
1. A method for safening the phytotoxic effect of a fungicidal composition which comprises difenoconazole on a plant or plant propagation material said method comprising applying to said plant or plant propagation material a fungicidal composition which comprises difenoconazole wherein at least 40% by weight of said difenoconazole is the 2R, 4S isomer depicted as formula (Ib):
and wherein at least 95% by weight of the remaining difenoconazole is the 2S, 4S isomer depicted as formula (Id):
and wherein the safening is measured in comparison to a reference difenoconazole comprising difenoconazole isomers in approximately the weight percentages of: 30% 2S, 4R; 30% 2R, 4S; 20% 2R, 4R; and 20% 2S, 4S.
2. A method according to claim 1 wherein all of said remaining difenoconazole is said 2S, 4S isomer depicted as formula (Id).
3. A method according to claim 1 wherein at least 55% by weight of said difenoconazole in said composition is the 2R, 4S isomer depicted as formula (Ib).
4. A method according to claim 1 wherein at least 60% by weight of said difenoconazole in said composition is the 2R, 4S isomer depicted as formula (Ib).
5. A method according to claim 1 wherein at least 65% by weight of said difenoconazole in said composition is the 2R, 4S isomer depicted as formula (Ib).
6. A method according to claim 1 wherein at least 80% by weight of said difenoconazole in said composition is the 2R, 4S isomer depicted as formula (Ib).
7. A method according to claim 1 wherein said composition further comprises one or more components selected from the group consisting of: adjuvant, carrier and surfactant.
8. A method according to claim 1 wherein said plant or propagation material is a cereal plant or cereal propagation material.
9. A method according to claim 8 wherein said plant or propagation material is wheat or barley.
10. A method according to claim 9 wherein said plant or propagation material is wheat.
11. A method according to claim 9 wherein said plant or propagation material is barley.