TY CONF TI LIQUID COMPLEX FERTILIZERS IN SUNFLOWER AGROCENOSES OF THE FOREST-STEPPE OF RUSSIA KW liquid complex fertilizers KW sunflower hybrids KW fertilizer dose KW yield JO «PROBLEMS OF SOIL FERTILITY IN MODERN AGRICULTURE» AU Pigorev, I.Y. AU Shitikov, N.V. AU Androsova, Y.N. PY 2024 PB Krasnoyarsk Scientific Research Institute of Agriculture is a separate division of the Federal Research Center KSC SB RAS