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Loss Assessment of Sugarcane due to Attack of Stem Borer 115

Percent loss in sugar recovery due to different levels of stem borer infestation in different latest
Isd 40 - 0.10 3.02 6.44 6.94 11.87 25.45 28.97 37.32 38.23 40.85 1.777 12.83 Isd 40 - 9.23 18.66 25.87 31.34 33.62 40.70 47.70 47.87 50.39 64.80 1.644 11.51

Isd 39 - 0.54 1.18 1.29 1.94 2.47 3.44 4.52 4.84 14.62 21.18 NS 11.92 Isd 39 - 6.88 8.50 13.36 16.35 21.62 23.64 30.36 30.93 30.76 48.17 1.526 9.18

sugarcane varieties at BSRI farm, Ishurdi, Pabna, 2009-2010
Isd 38 - 0.17 0.94 1.29 1.37 3.52 5.23 10.46 10.55 19.30 21.53 1.768 9.55 Isd 38 - 9.16 19.45 26.05 27.16 29.13 35.56 38.30 42.25 44.04 62.55 1.442 10.42

Isd 37 - 0.11 2.84 7.53 7.86 11.68 11.90 12.45 14.41 15.94 23.03 1.644 11.69 Isd 37 - 6.18 14.22 22.04 23.08 29.78 36.93 44.68 44.38 50.11 60.53 1.378 8.63

Isd 36 Percent loss in recovery due to stem borer infestation - 2.54 5.50 7.28 11.42 12.44 14.30 17.85 18.19 20.39 25.89 1.772 10.04 Percent loss in weight due to stem borer infestation Isd 36 - 10.00 18.15 19.12 34.66 35.54 44.95 55.33 65.33 65.05 72.52 1.243 11.52

Isd 35 - 0.45 1.07 5.82 6.36 7.16 9.13 14.68 14.95 25.51 26.86 1.800 10.54 Percent loss in weight due to different levels of stem borer infestation in different latest released Isd 35 - 0.21 10.94 12.02 32.40 32.73 44.21 54.93 63.19 63.84 69.63 1.538 14.89

Isd 34 - 2.64 3.25 11.26 12.12 14.26 15.88 18.05 19.58 21.30 41.32 1.765 11.23 commercial sugarcane varieties at BSRI farm, Ishurdi, Pabna, 2009-2010 Isd 34 - 9.66 15.74 26.08 26.23 35.35 35.84 40.76 43.15 43.68 66.60 1.555 11.39

Isd 33 - 0.97 5.16 6.32 7.75 8.90 9.62 13.27 14.87 15.49 27.60 1.729 10.05 Isd 33 - 6.81 18.21 18.89 36.70 37.97 44.21 55.50 59.10 63.29 65.92 1.509 13.69

commercial released Isd 32 Isd 31 - - 0.61 0.32 2.34 2.02 11.09 5.96 12.92 8.31 14.04 8.95 14.95 9.48 22.78 17.15 24.52 19.91 29.70 22.15 34.38 31.84 1.730 1.762 12.20 12.45 Isd 32 Isd 31 - - 2.00 5.30 5.72 8.55 7.94 17.40 15.59 17.70 22.05 23.60 24.05 28.22 31.92 38.05 38.16 48.57 44.32 58.70 53.97 62.63 1.567 1.411 8.80 11.32

Table 1. Different levels of infestation 0% infestation 10 % infestation 20 % infestation 30 % infestation 40 % infestation 50 % infestation 60 % infestation 70 % infestation 80 % infestation 90 % infestation 100 % infestation LSD (0.05) CV (%) Table 2. Different levels of infestation 0% infestation 10 % infestation 20 % infestation 30 % infestation 40 % infestation 50 % infestation 60 % infestat