Use of basic amino acids in copper-containing fungicidal formulations

A fungicidal composition comprising

• a′) lysine, at least one copper salt and at least one further fungicidal active ingredient, wherein the at least one copper salt and lysine are in weight ratios of from 1:7 to 10:1, based on copper, and
• b′) a solvent or solvent mixture or
• c′) a basic nitrogen compound, or
• d′) adjuvants which are suitable for the composition, or
• v′) a combination of at least two of the components mentioned under b′) to d′).

A method for the preparation of a fungicidal formulation comprising

• a′) lysine, at least one copper salt and at least one further fungicidal active ingredient, wherein the at least one copper salt and lysine are in weight ratios of from 1:7 to 10:1, based on copper, and
• b′) a solvent or solvent mixture or
• c′) a basic nitrogen compound, or
• d′) adjuvants which are suitable for the formulation, or
• v′) a combination of at least two of the components mentioned under b′) to d′), said method comprising either
• a) treating copper and basic amino acids together with at least one further fungicidal active ingredient and with adjuvants which are suitable for the formulation, and formulating the mixture;
• or
• b) treating an agrochemical formulation comprising copper as the only fungicidal active ingredient with basic amino acids and with at least one further fungicidal active ingredient and with adjuvants which are suitable for the formulation, and formulating the mixture;
• or
• c) treating an agrochemical formulation comprising copper as the only fungicidal active ingredient with basic amino acids and with an agrochemical formulation of a further fungicidal active ingredient which comprises no copper or lysine;
• or
• d) treating a copper-containing agrochemical formulation which, besides copper, comprises at least one further fungicidal active ingredient with basic amino acids.