%0 Journal Article %T Assessment of competitiveness of sunflower hybrids of different maturity groups %A Mamsirov, N.I. %A Khanieva, I.M. %A Tkhakushinova, L.N. %K sunflower hybrids, contamination of crops, weeds, species composition, maturity groups, yield, critical period of harmfulness %J INTERNATIONAL AGRICULTURAL JOURNAL %D 2025 %N 0 %P 2 %I Electronic science