C. Butegwa

Induced phosphorus fixation and the effectiveness of phosphate fertilizers derived from Sukulu Hills phosphate rock

G. Mullins, S. Chien, C. Butegwa, 1995, Fertilizer research.

Agronomic evaluation of fertilizer products derived from Sukulu Hills phosphate rock

G. Mullins, S. Chien, C. Butegwa, 2004, Fertilizer research.

Fertiliser use: one of the keys to attaining and sustaining higher crop yields

O. Semalulu, C. Butegwa, 2000 .