Claim 1: a synergistic compound for the protection of agricultural crops, comprising at least one component [a], including a formula compound (1) 3-difluoromethane-n - (7-fluoro-1, 1, 3-trimethyl-4-indanil) - 1-methyl-4-pyrylidene chloride, one of which is methyl-ch-8323 -;at least one compound [B] selected from compounds with fungicidal or insecticidal activity that belong to one or more of the following groups of fungicidal and insecticidal compounds: Fungicidal compounds: i) azoles; ii) amino derivatives; iii) strobilurins; iv) specific antioid compounds; v) anilinopyrimidines; vi) benzimidazoles and their analogues; vii) dicarboximides; viii) polyhalogenated fungicides; ix) inducers of acquired systemic resistance (SAR);x) phenylpyrroles; xi) acylalanines; xii) antiperonosporic compounds; xiii) dithiocarbamates; xiv) arylamidines; xv) phosphoric acid and its derivatives; xvi) copper based copper fungicides; xvii) fungicidal amides; xviii) nitrogenous heterocycles; Insecticidal compounds: xix) neonicotinoids; xx) phenylpyrazoles; xxi) pyrethroids; xxii) carbamates; xxiii) macrolides of a microbial origin; xxiv) insecticidal diamides; xxv) trifluoromethylpyridyl derivatives. Claim 4: The compositions according to one or more of the preceding claims,The formulation compound (1) is characterized as racemic mixture ((1) - RS). Claim 5: the composition according to one or more requirements in 1 to 3, which is characterized in that a formula compound (1) is selected from the following two requirements: one is a mixture concentrated in one counterpart, preferably a mixture concentrated in one counterpart, one is a mixture concentrated in two counterparts, one is a mixture concentrated in one counterpart, and the other is a mixture concentrated in one counterpart in some form ((1) - R) or (1) - s) in two counterparts. Basic purity ( gt; 99.99% by weight).de preferencia el enanti mero R Reivindicaci n 7 Las composiciones de acuerdo con una oms de las reivindicaciones ante