SI Table 7 Combining environmental risk and land use into a (total) 5 risk estimate of SOM deficiency SI Table 8 Classification of crops cultivated by farmers participating in 5 the survey SI Table 9 Soil taxonomy classes 6 SI Table 10 Characteristics of farmers included in the analysis 6 Three options for combining slope and soil texture into a soil risk estimate of SOM deficiency SI Table :Low soil risk estimate (soil texture x slope) Nearly level Gentle Moderate Strong to steep (0°) (1°) (2-3°) (4-7°) (>8°) Coarse (> 65% sand , < 18% clay) 2 2 3 4 5 Medium (> 15% sand, 18-35% clay or 1 1 2 3 4 sand, < 18% clay) Medium fine (<15% sand, < 35% clay) 1 2 3 3 4 Fine (35-60% clay) 2 2 3 4 5 Very fine (>60% clay) 2 2 3 4 5 SI Table : Medium soil risk estimate (soil texture x slope) Level Nearly level Gentle Moderate Strong to steep (0°) (1°) (2-3°) (4-7°) (>8°) Coarse (> 65% sand , < 18% clay) 2 3 4 5 5 Medium (> 15% sand, 18-35% clay or 1 1 2 3 4 sand, < 18% clay) Medium fine (<15% sand, < 35% clay) 1 2 3 3 4 Fine (35-60% clay) 2 2 3 4 5 Very fine (>60% clay) 2 3 4 5 5 SI Table : High soil risk estimate (soil texture x slope) Level Nearly level Gentle Moderate Strong to steep (0°) (1°) (2-3°) (4-7°) (>8°) Coarse (> 65% sand , < 18% clay) 2 3 4 5 5
SI Table 7 Combining environmental risk and land use into a (total) risk estimate of SOM deficiency 5 SI Table 8 Classification of crops cultivated by farmers participating in the survey 5 SI Table 9 Soil taxonomy classes 6 SI Table 10 Characteristics of farmers included in the analysis 6 Three options for combining slope and soil texture into a soil risk estimate of SOM deficiency SI Table :Low soil risk estimate (soil texture x slope) (0°) Nearly level (1°) Gentle (2-3°) Moderate (4-7°) Strong to steep (>8°) Coarse (> 65% sand , < 18% clay) 2 2 3 4 5 Medium (> 15% sand, 18-35% clay or sand, < 18% clay) 1 1 2 3 4 Medium fine (<15% sand, < 35% clay) 1 2 3 3 4 Fine (35-60% clay) 2 2 3 4 5 Very fine (>60% clay) 2 2 3 4 5 SI Table : Medium soil risk estimate (soil texture x slope) Level (0°) Nearly level (1°) Gentle (2-3°) Moderate (4-7°) Strong to steep (>8°) Coarse (> 65% sand , < 18% clay) 2 3 4 5 5 Medium (> 15% sand, 18-35% clay or sand, < 18% clay) 1 1 2 3 4 Medium fine (<15% sand, < 35% clay) 1 2 3 3 4 Fine (35-60% clay) 2 2 3 4 5 Very fine (>60% clay) 2 3 4 5 5 SI Table : High soil risk estimate (soil texture x slope) Level (0°) Nearly level (1°) Gentle (2-3°) Moderate (4-7°) Strong to steep (>8°) Coarse (> 65% sand , < 18% clay) 2 3 4 5 5
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