Use of regulators of growth in increase of efficiency of hybrids of sunflower in KBRIrina Haniyeva, Rustam Abdulkhalikov, Yury Shogenov, Andemirkan Odizhev and Ahmed SabolirovE3S Web Conf., 254 (2021) 07013DOI: https://doi.org/10.1051/e3sconf/202125407013