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Table 5 Test of differences in input use, in terms of ,value of inputs (USD), by users and non-users of CSP

From: Productivity and food security effects of using of certified seed potato: the case of Kenya’s potato farmers

Variables Users (n = 167) A Non-users (n = 241) B Mean diff
Non-labor inputs Mean (SD) Mean (SD) A − B (t value)
seed_purchase 535 (228.1) 459.1 (217.5) 76.2*** (4.10)
folier_feed 10.5 (10.7) 7.2 (10.0) 3.3*** (3.20)
fertiliser 265.0 (137.8) 212.8 (117.7) 52.2*** (4.10)
insecticide 9.7 (10.1) 5.8 (8.4) 3.9*** (4.30)
fungicide 52.1 (30.4) 52.9 (33.4) −0.8 (0.25)
manure 91.2 (107.0) 81.0 (94.5) 10.2 (1.02)
  1. SD standard deviations
  2. *, **, and *** significant at 10, 5, and 1%, respectively