The use of photothermal quotient and frost risk to identify suitable sowing dates for wheat doi: 10.4025/actasciagron.v36i1.14854. Acta Scientiarum. Agronomy, [S. l.], v. 36, n. 1, p. 99–110, 2014. DOI: 10.4025/actasciagron.v36i1.14854. Disponível em: https://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/14854. Acesso em: 7 jun. 2026.