Crop and soil response to tillage and crop residue application in a tropical ferralsol in sub-humid western Kenya - Kihara, Job Maguta; Mukalama, J; Ayuke, Fredrick O.; Njoroge, S; Waswa, Boaz Shaban; Okeyo, J.; Koala, Saidou; Bationo, B. André (Springer, 2012)