J. Semakula, D. Mutetikka, D.R. Kugonza and D. Mpairwe
Agricultural Journal 5 ( 2 ): 89 - 97 , 2010
T. Kagoya, K. Natukunda and D.R. Kugonza
Agricultural Journal 8 ( 5 ): 248 - 255 , 2013