P. A. OPALA, C. O. OTHIENO, J. R. OKALEBO and P. O. KISINYO
(Cambridge University Press., 2009-10-09)
Due to escalating costs of imported fertilizers, there is renewed interest in the use of local nutrient resources
in managing soil fertility in Kenya. We tested the effect of two organic materials, farmyard manure (FYM)
and ...