Disclosed are pyrazole-4-N-alkoxycarboxamides of formula (I), salts/stereoisomers/diastereoisomers/enantiomers/tautomers and N-oxides thereof, and methods for their synthesis. Also disclosed are compositions which comprise these compounds and their use in agriculture or horticulture for controlling or preventing infestation of plants by phytopathogenic microorganisms, particularly fungi.