TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Claimed): The pyrazole-4-carboxamide derivative (I) is manufactured by condensing pyrazole-4-carboxylic acid derivative of formula (II) and 4-amino-pyrazole derivative of formula (III).Y'=leaving group. Preferred Definitions:    R2=difluoromethyl or trifluoromethyl;    R4=trifluoromethyl;    Ar'=phenyl optionally substituted by halo;and    X=halo.    ACTIVITY - Antimicrobial; Fungicide. In a test for measuring fungicide activity against Puccinia horiana, (N-(1-(2-fluorophenyl(5-(2-chlorophenyl)-))-5-trifluoromethyl pyrazol-4-yl)-3-difluoromethyl-1-methylpyrazole-4-carboxamide) exhibited fungicide activity of 95-100%.    MECHANISM OF ACTION - None given.    ADMINISTRATION - The agent in the form of emulsion, water-dispersible granule, or sol is applied to crops at a concentration of 1-100000, preferably 10-10000 g.    SPECIFIC COMPOUNDS - 423 Pyrazole-4-carboxamide derivatives are disclosed e.g. N-(1-(2-fluorophenyl(5-(2-chlorophenyl)-))-5-trifluoromethyl pyrazol-4-yl)-3-difluoromethyl-1-methylpyrazole-4-carboxamide of formula (Ia), N-(1-(2,4-difluoro-6-(3-fluorophenyl)phenyl)-5-trifluoro pyrazol-4-yl)-3-difluoro-methylpyrazole-4-carboxamide, N-(1-(2-(3-chlorophneyl)-4,6-difluorophenyl)-5-trifluoromethyl pyrazol-4-yl)-3-difluoromethyl-1-methylpyrazole-4-carboxamide, N-(1-(biphenyl-4-yl)-5-trifluoromethyl pyrazol-4-yl)-3-difluoromethyl-1-methylpyrazole-4-carboxamide and N-(1-(5-(3-chlorophenyl)-2-fluorophenyl)-5-trifluoromethyl pyrazole-4-yl)-3-difluoromethyl-1-methylpyrazol-4-carboxamide.    EXAMPLE - Dichloromethane (in mL) (1) was added to 4-amino-1-(2,4-difluoro-6-(3-fluorophenyl)phenyl)-5-trifluoromethyl pyrazole (200 mg) and stirred. To the mixture, dichloromethane solution (1) of triethylamine (85 mg) and 3-(2'-chloro-4-fluoro-1,1'-biphenyl-3-yl)-2-(trifluoromethyl)cyclopenta-1,4-dien-1-amine (109 mg) was added and stirred. The reaction mixture was added to aqueous solution (10) of saturated sodium hydrogen carbonate. The reaction mixture was extracted, dried, concentrated and purified to obtain N-(1-(2-fluorophenyl(5-(2-chlorophenyl)-))-5-trifluoromethyl pyrazole-4-yl)-3-difluoromethyl-1-methylpyrazole-4-carboxamide, with yield of 53%.