Table 3 Expected frequencies of annual generations of Tuta absoluta in Giza governorate during 2012
Month | Days (n) | t − x | n (t − x) | Rate of generation development | Expected date of annual generations | Cycles no. |
|---|---|---|---|---|---|---|
Feb. 2012 | 29.00 | 8.73 | 253.08 | 0.32 | 1, Feb. 2012 | |
March | 31.00 | 10.92 | 338.43 | 0.42 | ||
April | 11.66 | 17.79 | 207.43 | 0.26 | ||
Total | 71.66 | 799.10 | 1.00 | 11.66, Apr. 2012 | 1 | |
April | 18.34 | 17.79 | 326.27 | 0.41 | ||
May | 22.634 | 20.89 | 472.83 | 0.59 | ||
Total | 40.97 | 799.10 | 1.00 | 22.63, May 2012 | 2 | |
May | 8.37 | 20.89 | 174.85 | 0.22 | ||
June | 26.50 | 23.56 | 624.25 | 0.78 | ||
Total | 34.87 | 799.10 | 1.00 | 26.5, Jun. 2012 | 3 | |
June | 3.50 | 23.56 | 82.46 | 0.10 | ||
July | 28.977 | 24.73 | 716.64 | 0.90 | ||
Total | 32.48 | 799.10 | 1.00 | 28.98, Jul. 2012 | 4 | |
July | 2.02 | 24.73 | 49.95 | 0.055 | ||
August | 30.34 | 24.69 | 749.10 | 0.945 | ||
Total | 32.36 | 799.10 | 1.00 | 30.34, Aug. 2012 | 5 | |
August | 0.66 | 24.69 | 16.30 | 0.02 | ||
September | 30.00 | 22.19 | 665.70 | 0.83 | ||
October | 5.74 | 20.40 | 117.10 | 0.15 | ||
Total | 36.40 | 799.10 | 1.00 | 6.74, Oct. 2012 | 6 | |
October | 25.26 | 20.40 | 515.30 | 0.64 | ||
November | 17.67 | 16.06 | 283.80 | 0.36 | ||
Total | 42.93 | 799.10 | 1.00 | 17.67, Nov. 2012 | 7 | |
November | 12.33 | 16.06 | 198.02 | 0.25 | ||
December | 31.00 | 11.08 | 343.48 | 0.43 | ||
Jan. 2013 | 27.67 | 9.31 | 257.61 | 0.32 | ||
Total | 71.00 | 799.10 | 1.00 | 28.2, Jan. 2013 | 8 | |
Jan. 2013 | 3.33 | 9.31 | 31.00 | 0.038 | ||
Total no. of cycles | 8.038 | |||||