1. A pesticidal composition containing a pyridine compound represented by the formula (I):! ! (where the radical R1 represents CH2CN or!! and each of the radicals R2 and R3, which are independent of each other, represents a hydrogen atom, a halogen atom, a C1-6 alkyl or C1-6 alkoxy group), or its salt and at least one activity enhancing component selected from the group consisting of nonionic surfactant, anionic surfactant, cationic surfactant, amphoteric surfactant, animal or vegetable oil, mineral oil, water thiefable polymer, resin and wax. ! 2. The pesticidal composition according to claim 1, in which the pyridine compound is at least one compound selected from the group consisting of! N-cyanomethyl-4-trifluoromethyl-3-pyridinecarboxamide,! N- (5-isoxazolyl) -4- (trifluoromethyl) nicotinamide,! N- (3-methyl-5-isoxazolyl) -4- (trifluoromethyl) nicotinamide,! N- (4-chloro-5-isoxazolyl) -4- (trifluoromethyl) nicotinamide,! N- (4-bromo-5-isoxazolyl) -4- (trifluoromethyl) nicotinamide,! N- (4-methyl-5-isoxazolyl) -4- (trifluoromethyl) nicotinamide,! N- (4-ethyl-5-isoxazolyl) -4- (trifluoromethyl) nicotinamide and! N- (4-methoxy-5-isoxazolyl) -4- (trifluoromethyl) nicotinamide. ! 3. The pesticidal composition according to claim 1, wherein the pyridine compound is N-cyanomethyl-4-trifluoromethyl-3-pyridinecarboxamide. ! 4. The pesticidal composition according to claim 1, wherein the activity enhancing component is at least one ingredient selected from the group consisting of a nonionic surfactant, an anionic surfactant, �1. Пестицидная композиция, содержащая пиридиновое соединение, представленное формулой (I): ! ! (где радикал R1 представляет собой CH2CN или ! ! и каждый из радикалов R2 и R3, которые являются независимыми друг от друга, представляет собой атом водорода, атом галогена, С1-6алкил или С1-6алкоксигруппу), или его соль и по меньшей мере один повышающий активность компонент, выбранный из группы, состоящей из неионного поверхностно-активного веществ