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• W2945113105 abstract "Sustainable intensification of agricultural production is needed to ensure increased productivity relative to inputs. Short-term yield returns and labor input are major determinants of the fate of sustainable intensification options on smallholder farms in sub-Saharan Africa because labor shortage is often acute, and most farmers lack access to labor-saving technologies. We assessed the relationship between maize grain yield change and labor input from a total of 28 published papers (631 data pairs) including subsets of data pairs within specific sustainable intensification practices. Among the reviewed technologies, manually dug planting basins showed ratios between the change in yield and change in labor inputs (ΔY/ΔL) below 1, suggesting that labor demand increased more than yield. In contrast, ridging showed average ΔY/ΔL values ≥ 2. No-till showed high ΔY/ΔL (average ≥ 1.7) when combined with herbicides but average ΔY/ΔL ≤ 1 (total labor) when manually weeded. Manually weeded rotations showed average ΔY/ΔL ≥ 1 and manually weeded intercropping systems average ΔY/ΔL around 1. The relations revealed four scenarios: high yield returns but low labor demand, high yield returns and labor demand, low yield returns and labor demand, and low yield returns but high labor demand. High yield with high labor demand requires mostly investments in machinery and/or herbicides to reduce labor input. Low yield with low labor demand requires improved crop management, whereas low yield with high labor demand requires a combination of improved crop management and investments to reduce labor. This is the first comprehensive assessment showing that the sustainable intensification options being considered for smallholder farmers may increase crop yield but also labor demand. Options that include mechanization and herbicides at low cost are likely to be adopted due to their reduction effect on drudgery and total labor input." @default.
• W2945113105 created "2019-05-29" @default.
• W2945113105 creator A5045616166 @default.
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• W2945113105 date "2019-05-22" @default.
• W2945113105 modified "2023-09-23" @default.
• W2945113105 title "Yield and labor relations of sustainable intensification options for smallholder farmers in sub‐Saharan Africa. A meta‐analysis" @default.
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• W2945113105 doi "https://doi.org/10.1007/s13593-019-0575-1" @default.
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