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Table 1 LD 50 calculation for pesticidal activity using probit analysis

From: Pesticidal and pest repellency activities of a plant derived triterpenoid 2α,3β,21β,23,28-penta hydroxyl 12-oleanene against Tribolium castaneum

Recording time Dose (mg/cm2) % of Average mortality % Crrected mortality Regression equation LD50(mg/cm2) 95% Confidence limits
       Lower Upper
Record after 24 hours 1.77 86.60 87 Esimate 1 0.38 6.58 16.32
  Y = 2.15 + 3.42X    
0.88 80.00 80 Esimate 2
0.44 63.30 63 Y = 1.92 + 1.58X
0.22 33.30 33
Record after 48 hours 1.77 90.00 90 Esimate 1 0.34 9.54 22.55
0.88 86.60 87 Y = 1.62 + 1.64X
0.44 63.30 63 Esimate 2
  0.22 40.00 40 Y = 3.23 + 1.31X    
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