172 



JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 6 



10 ao 20 40 so 60 70 80 90 100 



UNSPRAYED 



SPRAY£D rviCE 



SPRAYED 3 TIMES 



mg^g.i-e> 



1 93.81 



195 



lO 



EFFICIENCY OF SPRAYING IN THE PRODUCTION OF SOUND FRUIT 



Chart No. 7: Showing graphically per cent of sound fruit on sprayed and unsprayed blocks 



(Columns represent sound fruit) 



The columns in Chart No. 7 represent the per cent of sound fruit 



produced. 



94-^3 94-37 



901 



SPRAY REL.^TION TO CROP PRODUCTION 



Chart No. 8: Showing graphically the per cent of all apples set, which were on the trees at picking time, 



regardless of injury on sprayed and unsprayed trees of the same variety 



From Chart No. 8 we see that the sprayed orchard produced from 

 one-third more to seven times as much fruit as the unsprayed. 



