INFLUENCE OF SOIL APPLICATION OF BIOLOGICAL AND MINERAL FERTILIZERS ON THE GROWTH, YIELD, AND FRUIT BIOCHEMICAL COMPONENTS OF ‘CHARAVNITSA’ APPLE, AND ON SOME AGROCHEMICAL SOIL CHARACTERISTICS 59-67 Tamara V. Ryabtseva, Nadezhda G. Kapichnikova, Natalya A. Mikhaĭlovskaya
