Researchers at the International Maize and Wheat Improvement Center (CIMMYT) analysed potential trade-offs in maize residue use as soil mulch and livestock feed in mixed crop-livestock systems in Kenya. Based on survey data, researchers found that both the proportion and quantity of maize residue used for soil mulch and livestock feed are strongly affected by agro-ecology and livestock holding. Farmer knowledge about alternative use of crop residues and farmer perception of soil erosion risk positively affect the amount of residue farmers retain on maize plots. Results imply that crop residue use as soil mulch in conservation agriculture is challenged in mixed crop-livestock systems and particularly by smallholder farmers owning cross-bred and exotic dairy animals. In general, reducing the demand for crop residues as livestock feed through the introduction of alternative feed sources, better extension services on the use of crop residue as soil mulch and designing agro-ecology specific strategies and interventions could facilitate the adoption and expansion of CA-based practices in mixed crop-livestock systems.
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