FIELD: chemical industry. SUBSTANCE: described are new phenylalkaneamide derivatives represented by formula I: 
wherein R1 is hydrogen atom or C1-C6 alkyl group; R2 is hydrogen atom, C1-C6 alkyl group; R3 and R4 each independently is C1-C6 alkyl group, C2-C6 cycloalkyl group, C2-C6 alkoxy group, C1-C4 halogenalkyl group or R3 and R4 together with carbon atom to which they are attached, form 5-7 membered cycloakyl cycle which is substituted by C1-C6 alkyl group; Q is cyano group or group of formula -COR5 wherein R5 is hydroxy group, C1-C6 alkyl group, C1-C6 alkoxy group, amino group, C1-C6 alkylamino group or C1-C6 dialkylamino group; X is halogen atom, C1-C6 alkyl group, C2-C6 alkynyl group, C1-C4 halogenalkyl group, hydroxy group, C1-C6 alkoxy group, C3-C6 cycloalkoxy group, C1-C4 halogenalkoxy group, aryloxy group, heteroaryloxy group selected from pyridyloxy and thienyloxy, C1-C6 alkylthio group, C1-C6 alkylsulfinyl group, C1-C6 alkylsulfonyl group, amino group, C1-C6 alkylamino group, C1-C6 dialkylamino group, nitro group, cyano, aryl group, heteroaryl group selected from pyridyl or pyrrolyl, alkylacarbonyl group, aryl carbonyl group, thienylcarbonyl group; each from E and Z is independently hydrogen atom or halogen atom, n is integer of 0-3 except for the case when R3 and R4 are trifluoromethyl group simultaneously, and provided that then R1 and R2 are both hydrogen, both Y and Z are hydrogen atom, and n is integer of 1-3. Compounds of formula I have superb fungicidal activity as compared with conventional fungicides with respect to rice and similar diseases and at the same tome do not interfere with growth of desired plants. Also described are method of preparing said plants and horticultural fungicides based on above- mentioned compounds. EFFECT: improved properties of the agricultural and horticultural fungicide and more efficient preparation method. 9 cl, 18 cl, 31 tbl
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