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Table 5 Statistics of best–worst scores for soil conditioners’ attributes

From: Factors affecting purchasing process of digestate: evidence from an economic experiment on Sicilian farmers’ willingness to pay

  T1 T2 T3 T4
Organic origin 0.46 0.67 0.11 − 0.16
 Fisher’s exact test p value = 0.0801
Soil fertility 1.66 1.36 1.71 1.61
 Fisher’s exact test p value = 0.7682
Environmental sustainability 0.79 0.65 0.27 0.34
 Fisher’s exact test p value = 0.4410
Local production − 1.43 − 0.82 − 1.16 − 0.57
 Fisher’s exact test p value = 0.1297
Safety − 0.57 − 1.00 − 0.88 − 0.63
 Fisher’s exact test p value = 0.5412
Price − 0.66 − 0.60 − 0.07 − 1.09
 Fisher’s exact test p value = 0.2757
Natural product 0.48 0.55 0.27 0.77
 Fisher’s exact test p value = 0.2067
Microbial activity 0.21 0.33 0.34 0.61
 Fisher’s exact test p value = 0.7319