CONTROLLING THE TOMATO FEUITWORM. 



400 1 2 a .. 4 .5_ 6 "L. 



100 or 

 20^ 







Pig. 3. 



Diagram, prepared from weekly totals during harvesting season, showing number 

 of tomatoes of the Earliana variety and percentage apparently injured by the tomato 

 fruitworm in 1917. Spaces between horizontal lines represent 100 in case of total 

 number of tomatoes, and 20 in case of percentage wormy. Vertical lines represent weeks. 

 The solid line represents the total number of tomatoes from the unsprayed check ; the 

 dotted line, the percentage of check wormy ; the line of dashes, the total number of 

 tomatoes from plants sprayed with arsenate of lead ; the line of dots and dashes, the 

 percentage of sprayed tomatoes wormy. 



400 1 2 3 4 & 6 7 d 



«r 80^ 



: >. — > 



^0 or 

 60J( 



200 or 

 40^ 



100 or 







Pig. 4. — Diagram, prepared from weekly totals during harvesting season, showing number 

 of tomatoes of the Globe variety and percentage apparently injured by the tomato 

 fruitworm in 1916. Spaces between horizontal lines represent 100 in case of total 

 number of tomatoes, and 20 in case of percentage wormy. Vertical lines represent 

 weeks. The solid line represents the total number of tomatoes from the unsprayed check ; 

 the dotted line, the percentage of check wormy ; the line of dashes, the total number of 

 tomatoes from plants sprayed with arsenate of lead ; the line of dots and dashes, the 

 percentage of sprayed tomatoes wormy. 



,t?W^ ? ? *— 6 6 r 



e 



IFiG. 5. — Diagram, prepared from weekly totals during harvesting season, showing number 

 of tomatoes of the Globe variety and percentage apparently injured by the tomato 

 fruitworm in 1917. Spaces between horizontal lines represent 100 in case of total 

 number of tomatoes, and 20 in case of percentage wormy. Vertical lines represent 

 weeks. The solid line represents the total number of tomatoes from the unsprayed 

 check ; the dotted line, the percentage of check wormy ; the line of dashes, the total 

 number of tomatoes from plants sprayed with arsenate of lead ; the line of dots and 

 dashes, the percentage of sprayed tomatoes wormy. 



