Musinguzi, Patrick. Critical soil organic carbon range for optimal maize response to nit rogen in a ferralsol / Patrick Musinguzi. - Kampala, 2017. - viii,192 p. : ill. ; 30 cm. Unpublished thesis (PhD. Agriculture)- Makerere University, 2017 Includes bibliographical references. Subjects--Topical Terms: Soils-- Carbon content-- Uganda. Ferralsols-- Uganda. Dewey Class. No.: 631.417