VIII DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 



The One-Spray Method in the Control of the Codling Moth and the 



Plum Curculio (second report) — Continued. Page. 



Experiments in Michigan 92 



The codling moth 94 



Experiments in Delaware 98 



The codling moth 100 



The plum curculio 102 



Experiments in Kansas 102 



The codling moth 105 



Summary of results 107 



Conclusions 110 



Life History of the Codling Moth in the Santa Clara Valley of Cali- 

 fornia P'. R. Jones and W. M. Davidson. . 113 



Introduction 113 



Seasonal-history studies of 1909 114 



Spring brood of pupae 114 



Spring brood of moths 115 



First generation 115 



Second generation 118 



Seasonal-history studies of 1910 119 



Spring brood of pupae 119 



Spring brood of moths 122 



First generation 126 



Second generation 135 



Review of life-history work of 1910 142 



Seasonal-history studies for 1911 143 



Spring brood of pupae 143 



Spring brood of moths 147 



First generation ! 150 



Second generation 156 



Natural enemies of the codling moth 160 



Parasitic insects 160 



Predaceous insects 161 



Band records of 1909 161 



Band records of 1910 162 



Band records of 1911 163 



First-brood emergence v. overwintering emergence, 1911 164 



Review of life-history work of 1911 165 



Comparison of life history in 1910 and 1911 165 



Weather records for 1909, 1910, and 1911 166 



Comparative life-history studies for the seasons 1909, 191 0, and 1911 170 



Control of the codling moth on pears and apples in the Santa Clara Valley. 171 



The O'Toole pear orchard at Alviso, Cal 172 



Spraying operations 172 



Season of 1910 172 



Season of 1911 175 



The Northern apple orchard 177 



Season of 1911 177 



Conclusions from experiments in control 179 



Summary 180 



Index 183 



