NOVÁK, A. The effect of the sowing time on the yield and oil content of sunflower (Helianthus annus L.) in different crop protection models. Acta Agraria Debreceniensis, [S. l.], n. 64, p. 57–61, 2015. DOI: 10.34101/actaagrar/64/1863. Disponível em: https://ojs.lib.unideb.hu/actaagrar/article/view/1863. Acesso em: 19 apr. 2021.