Abstract: The subject of the invention is a process for the manufacture of aqueous suspensions of copper hydroxosulphates such as brochantite or antlerite, or a mixture of both, having a high copper content by weight, by reacting an aqueous solution of copper sulphate with an aqueous suspension of copper oxide or copper hydroxide in which the mean diameter of the solid particles is less than 25 ?m. The invention also relates to the preparation of cupric fungicidal compositions having a copper content which may be as high as 45%, in the form of powders, granules or suspension concentrates, dispersible in water, and their use for the fungicidal treatment of crops.

Abstract: The present invention is directed to methods and compositions for use to control parasitic mites of honey bees, particularly Varroa mites. In one aspect, the invention is directed to control of parasitic mites of honey bees wherein the active ingredient is a miticidally effective amount of a selected ketone or 1-heptanol, ethyl butyrate, benzaldehyde, heptaldehyde, or d-limonene. In a second aspect, the invention is directed to control of parasitic mites of honey bees wherein the active ingredient is an effective attractant amount of 2-heptanone. The attracted mites are then trapped or otherwise removed from the locus of the bees. The present invention is also directed to methods and compositions which include 2-heptanone to control hive invading pests of honey bees.

Abstract: The present invention is directed to methods and compositions for use to control parasitic mites of honey bees, particularly Varroa mites. In one aspect, the invention is directed to control of parasitic mites of honey bees wherein the active ingredient is a miticidally effective amount of a selected ketone or 1-heptanol, ethyl butyrate, benzaldehyde, heptaldehyde, or d-limonene. In a second aspect, the invention is directed to control of parasitic mites of honey bees wherein the active ingredient is an effective attractant amount of 2-heptanone. The attracted mites are then trapped or otherwise removed from the locus of the bees. The present invention is also directed to methods and compositions which include 2-heptanone to control hive invading pests of honey bees.

Abstract: The present invention is directed to methods and compositions for use to control parasitic mites of honey bees, particularly Varroa mites. In one aspect, the invention is directed to control of parasitic mites of honey bees wherein the active ingredient is a miticidally effective amount of a selected ketone or 1-heptanol, ethyl butyrate, benzaldehyde, heptaldehyde, or d-limonene. In a second aspect, the invention is directed to control of parasitic mites of honey bees wherein the active ingredient is an effective attractant amount of 2-heptanone. The attracted mites are then trapped or otherwise removed from the locus of the bees. The present invention is also directed to methods and compositions which include 2-heptanone to control hive invading pests of honey bees.

Abstract: To increase the effectiveness of a cupric plant-protection composition and therefore to reduce the dose of copper used per hectare, a copper source, in non-chelated form, is combined with a sparingly soluble calcium and/or zinc and/or manganese chelate. This combination makes it possible to obtain, in situ, the gradual release of a soluble copper chelate.