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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