Prediction of Long Dry Spells for Appropriate Cropping System in Gusau Northwestern Nigeria : Appropriate planting date. Nigerian Journal of Technology, [S. l.], v. 40, n. 5, p. 976–984, 2021. Disponível em: https://nijotech.com/index.php/nijotech/article/view/2651. Acesso em: 19 oct. 2025.