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Table 1 Economic analysis of the control vs. treatment plots

From: Assessing the impact of eco-innovations through sustainability indicators: the case of the commercial tea plantation industry in Sri Lanka

  Time (in months) Treatment [SSTB] Control [CCTB] % difference
Made tea yield (kg) 4 0 90  
6 621 462 +34%
10 1272 923 +38%
14 2148 1509 +42%
Foliar spray wastage (%) [Note a] 4 60% 60% 0%
6 10% 40% −75%
10 6% 30% −80%
14 2% 25% −92%
Cost of weeding (Rs.) [Note b] 4 7050 7050 0%
6 10,460 15,292 −32%
10 22,410 34,200 −34%
14 28,120 43,260 −35%
  1. aThis is the waste of agricultural inputs when applied directly as watery droplets on crop foliage expecting a quick response. This was measured by subtracting the canopy cover of the tea bushes from the total area of the spray application
  2. bThis represents the cost herbicide chemicals and labour employed for manual weeding. The mix of these two cost components varies with time and also with the condition of the field. Hence an average figure has been used in this study