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Table 5 Cost of cultivation and economics returns from various treatments in the management of C. auricilius

From: Evaluation of augmentative biological control strategy against major borer insect pests of sugarcane—a large-scale field appraisal

Year Treatments Yield
(t ha−1)
Cost of cultivationb
(USD ha−1)
Gross returns (USD ha−1) Benefit:cost ratio
2015 Biocontrol practicea 72.03 1807.16 3156.82 1.75
  Untreated control 63.44 1793.56 2780.35 1.55
2016 Biocontrol practicea 72.86 1823.46 3167.36 1.74
  Untreated control 62.28 1801.36 2707.43 1.50
2017 Biocontrol practicea 70.35 2004.07 3303.85 1.65
  Untreated control 62.65 1980.59 2942.24 1.49
2018 Biocontrol practicea 72.46 1899.10 3219.52 1.70
  Untreated control 63.36 1877.60 2815.19 1.50
2019 Biocontrol practicea 73.64 1902.14 3198.15 1.68
  Untreated control 62.81 1881.13 2727.81 1.45
Pooled mean Biocontrol practicea 72.27 1886.49 3208.33 1.70
Untreated control 62.91 1866.14 2792.45 1.50
  1. a12 releases of T. chilonis at 50,000 per ha at 10 days interval during July to October, price of sugarcane: USD 43.83, 43.47, 46.96, 44.43, and 43.43 tonne−1 during 2015, 2016, 2017, 2018, and 2019, respectively
  2. bIncludes trichocard + labor cost