ROTICH , Edwin Kiprono; KIBET SEREM , Cornelius. Influence of Crop Rotation, Tillage System and Residue on Soil Chemical Changes for Ferralitic Soils in Western Kenya . African Journal of Education,Science and Technology (AJEST), [S. l.], v. 3, n. 3, p. Pg 13–20, 2017. Disponível em: http://ajest.org/index.php/ajest/article/view/195. Acesso em: 3 apr. 2026.