Highlights • Occurrences of non-responsiveness ranged from 0%–68% across sites and seasons.• Fertilizer responses by each crop may contrast on a field during the same season.• Irregular rainfall patterns strongly limit soybean responses, while less for maize.• Maize non-responsiveness greater on soils with high silt and/or cation imbalances.• Soybean non-responsiveness greater on soils with high silt, low P and/or low TC:TN.

中文翻译：

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评估和了解非洲小农农场玉米和大豆对化肥施用的无反应性


亮点 • 不同地点和季节的无反应发生率在 0%–68% 之间。• 同一季节田地中每种作物的肥料反应可能存在差异。• 不规则的降雨模式强烈限制大豆反应，而玉米反应则较小。•在高淤泥和/或阳离子失衡的土壤上，玉米的无反应性更大。• 在高淤泥、低磷和/或低TC:TN 的土壤上，大豆的无反应性更大。