In southern Africa, soil nutrient reserves are being depleted because of continued nutrient
mining without adequate replenishment. The consequent downward spiral of soil fertility has …

Farmers in semi-arid Zimbabwe prioritise climate variability as their major agricultural
productivity-reducing problem. This paper raises the importance of considering local …

Next to drought, poor soil fertility is the single biggest cause of hunger in Africa.
ICRISATZimbabwe has been working for the past 10 years to encourage small-scale …

This paper argues that research and extension have failed to (1) develop technologies that
take into account farmers' resource constraints and risks; and (2) improve farmers' capacity …

Improved varieties of legumes adapted to nutrient deficiency have the potential to improve
food security for the poorest farmers. Tolerant varieties could be an inexpensive and …

The productivity and residual benefits of four grain legumes to sorghum (Sorghum bicolor)
grown in rotation were measured under semi-arid conditions over three crop** seasons …

The use of mineral and organic fertilizers as straight fertilizers or in appropriate
combinations may alleviate the problem of declining soil fertility and hence lead to increased …

Variability of soil fertility within, and across farms, poses a major challenge for increasing
crop productivity in smallholder systems of sub-Saharan Africa. This study assessed the …

The dryland farming systems of southern Africa have developed in response to the needs of
both rural and urban populations of the region. This chapter focuses on the dryland farming …

Smallholder farmer agricultural productivity in develo** countries is limited by diverse
biotic and abiotic constraints. They have, however, developed adaptive strategies to cope …