Effects of cocoa pod ash and urea on soil chemical properties and the performance of kale (Brassica oleracea L.) in derived savanna zone of Nigeria. Tropical Agriculture, [S. l.], v. 95, n. 2, 2018. Disponível em: https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/6621. Acesso em: 22 apr. 2025.