96 



DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 



95.59, with a total for all trees of 92.91, as against a total of 87.05 

 per cent free from this insect in Plat III, the one-spray plat, a differ- 

 ence in favor of Plat I of 5.86 per cent. The range for individual 

 trees in Plat III was 83.02 to 92.38. Plat V, the unsprayed plat, 

 shows a total percentage of 52.73 of fruit free from the codling moth, 

 the range being from 44.81 to 59.16. There is thus a gain over the 

 unsprayed fruit in sound fruit by the demonstration treatment of 

 40.18 per cent and by the one-spray method a gain of 34.32 per 

 cent of sound fruit. (See PI. IV, figs. 1, 2, 3.) 



Plat II, which received the home-boiled lime-sulphur demonstra- 

 tion treatment, shows a total percentage of fruit free from injury of 

 96.30, and Plat IV, the Bordeaux demonstration plat, shows 95.62 

 per cent of fruit free from injury. 



In Table VIII are shown the places of entrance of the fruit for 

 each tree of each plat for the total larvae throughout the season. 



Table VIII. — Places of entrance of fruit by total larvae of the codling moth for each tree 

 of each -plat. Fennville, Mich., 1911. 



PLAT I. COMMERCIAL LIME-SULPHUR DEMONSTRATION. 



PLAT II. HOME-BOILED LIME-SULPHUR DEMONSTRATION. 



First and second broods: 



Calyx 



Side 



Stem 



Total. 



6 



102 



2 



6 



104 



1 



19 



285 



5 



6.15 



92.23 



1.62 



309 



PLAT III. ONE-SPRAY METHOD. 



First and second broods: 



Calyx 



Side 



Stem 



Total. 



73 



54 



601 



24 



739 



7 



153 



5 



65 



879 



33 



977 



6.65 



89.97 



3.38 



977 



PLAT IV. BORDEAUX-MIXTURE DEMONSTRATION. 



First and second broods: 



Calyx 



Side 



Stem 



Tolal. 



47 



1(19 



55 

 136 



27.64 



68.34 



4.02 



100.00 



