Fungicides hydrazinium phosphites
AssigneePhilagro
InventorsJacques Ducret, Jean-Michel Gaulliard, Jean Vial
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Abstract
New derivatives of hydrazinium phosphites, their preparation and fungicidal compositions in which they are present are described. The new fungicidal derivatives have the formula ##STR1## in which R.sub.1 =H, or an alkyl radical containing from 1 to 4 carbon atoms, and R.sub.2 =H, or a phenyl nucleus which is optionally substituted by one or more of the following atoms or radicals: halogen, alkyl radicals, containing from 1 to 4 carbon atoms, and the nitro radical; however, it is not possible for R.sub.1 and R.sub.2 to simultaneously represent a hydrogen atom. These products can be used in agriculture for combating fungal diseases in plants.
Claims12
A process for the treatment of crops against fungal diseases, which comprises applying to a crop a fungicidal composition containing as active material at least one compound of the formula ##STR10## in which R.sub.1 represents a hydrogen atom, or an alkyl radical containing from 1 to 4 carbon atoms, and R.sub.2 represents a hydrogen atom, or a phenyl nucleus which is optionally substituted by one or more of the following atoms or radicals:
- halogen, alkyl radicals containing from 1 to 4 carbon atoms, and the nitro radical, provided that R.sub.1 and R.sub.2 do not simultaneously represent a hydrogen atom at a dose of between 10 g/hl and 300 g/hl.
A derivative of hydrazinium phosphite, of the formula:
- ##STR13## in which R.sub.1 represents a hydrogen atom, or an alkyl radical containing from 1 to 4 carbon atoms, and R.sub.2 represents a hydrogen atom, or a phenyl nucleus which is optionally substituted by one or more of the following atoms or radicals:
- halogen, alkyl radicals containing from 1 to 4 carbon atoms, and the nitro radical, provided that R.sub.1 and R.sub.2 do not simultaneously represent a hydrogen atom.
Dependencies are inferred from the claim text.