Table 2. Relationship between probit transformation of the cumulative percentage of Rhagoletis cerasi flies caught in yellow sticky traps and degree-day accumulations above 7°C since 1 February in reduced-risk orchards at Doburca and Sogukpinar (Mt. Uludag) in 1997 and 1998 (Bursa, Turkey)
Location Year Regression equation d.f. F r2 SE Slope y intercept
Doburca 1997 y = 0.010x - 2.34 5 75.36 0.94 0.92 0.007 – 0.01 −4.72 to 0.03
Doburca 1998 y = 0.010x - 2.23 6 205.92 0.97 0.54 0.008 – 0.01 −3.56 to −0.91
Combined Both y = 0.010x - 1.99 13 135.36 0.92 0.65 0.008 – 0.01 −3.40 to −0.58
Sogukpinar 1997 y = 0.010x - 4.04 7 543.22 0.99 0.40 0.009 – 0.01 −4.99 to −3.08
Sogukpinar 1998 y = 0.009x - 3.29 8 331.64 0.98 0.46 0.007 – 0.01 −4.34 to −2.24
Combined Both y = 0.009x - 3.32 17 210.14 0.93 0.59 0.007 – 0.01 −4.56 to −2.08
Pooled y = 0.007x - 1.15 32 71.06 0.69 0.77 0.006 – 0.01 −2.72 to 0.42