CONTROLLING THE TOMATO FRUITWORM. 



17 



Table II. — Tomatoes set out in field Aug. l.'i^ and 15, 1916 — Continued. 



HYBRID VARIETY.i 



1 



Check 





69.2 

 66.9 



82.3 

 107.3 



95.9 



57.7 



9.3 

 13.3 



11.1 

 12.7 



11.3 



3.8 



13.4 

 19.8 



13.4 

 11.8 



11.7 

 6.5 



694 

 546 



724 

 852 



856 

 597 



93 



94 



73 



88 



78 

 33 



13.4 



? 



Bordeaux mixture, 4-4-50 



7 



7 

 7 



7 



7 



17.2 



3 



4 

 5 



Commercial powdered arsenate of 

 lead, 3 pounds to 50 gallons 4-4- 

 50 Bordeaux mixture 



Commercial powdered arsenite of 

 zinc, 3 pounds t o 50 gallons water . 



Commercial Bordeaux and arse- 

 nate of lead mixture, 1 poimd 

 to 6 gallons water 



10.0 

 10.3 



9.1 



6 



Commercial powdered arsenate of 

 lead, 3 pounds to 50 gallons water. 



5.5 



1 Hybrid selected by Dr. Edgerton, the parents being the Earliana and a wilt-resistant hybrid. 



Table III.— Tomatoes set out in field Apr. 4 and 6, 1917. Applications of sprays 

 and dust made May 3, May 12, May 22, June 1, and June 12. Harvesting 

 began June 11, ended Aug. 11. . 



EARLIANA VARIETY. 



No. 



Material used. 



Niun- 

 ber of 

 appli- 

 cations. 



Total 



weight 



tomatoes. 



Weight 

 wormy. 



Per 



cent 



weight 



wormy 



Total 

 number 

 toma- 

 toes. 



Num- 

 ber 

 wormy. 



Per 



cent 



wormy. 



1 



Check : 





Pounds. 

 247.1 

 216.7 



303.1 



261.8 



297.0 

 265.5 



298.2 



Pounds. 

 47.9 

 41.5 



37.4 



31.8 



38.8 

 27.8 



31.8 



19.3 

 19.1 



12.3 



12.1 



13.0 

 10.4 



10.6 



.1,747 

 1,682 



2,102 



1,850 



1,929 

 1,856 



1,936 



398 

 370 



362 



317 



313 

 270 



270 



22.7 



9 



Bordeaux mixture, 4-4-50. 



5 

 5 



5 



5 



5 



5 



21.9 



3 



4 



Commercial powdered arsenate of 

 lead, 3 pounds to 50 gallons water 



Commercial Bordeaux and arse- 

 nate of lead mixture, 1 pound 

 to 6 gallons water.. 



17.2 

 17.1 



6 



Commercial powdered arsenate of 

 lead, 3 pounds to 50 gallons 4-4- 



16.2 



6 



7 



Commercial powdered arsenite of 

 zinc, 3 pounds to 50 gallons water. 



Commercial powdered arsenate of 

 calcium, 3 poimds to 50 gallons 

 water 



14.5 

 13.9 









GLOBE VARIETY. 



1 



Check 





211.7 



248.5 

 194.8 



227.5 



186.6 



247.4 



205.1 



24,2 



28.0 

 22.5 



22.1 



21.0 

 20.7 



19.5 



11.4 



11.2 

 11.5 



9.7 



n.2 



8.3 

 9.5 



1,473 



1,695 

 1,240 



1,597 



1,219 

 1,701 



1,570 



207 



247 

 175 



200 



150 

 180 



159 



14.0 



2 



Commercial powdered arsenate of 

 calcixmi, 3 pounds to 50 gallons 

 water 



5 

 5 



5 



5 

 5 



5 



14.5 



3 



Bordeaux mixture, 4-4-50 



14.1 



4 

 5 



Commercial powdered arsenite of 

 zinc, 3 pounds to 50 gallons water. 



Commercial powdered arsenate of 

 lead, 3 pounds to 50 gallons 4-4- 

 60 Bordeaux mixture 



12.5 

 12.3 



6 



7 



Commercial powdered arsenate of 

 lead, 3 pounds to 50 gallons water. 



Commercial Bordeaux and arse- 

 nate of lead mixture, 1 pound 

 to 6 gallons water 



10.5 

 10.1 









THIRTEEN VARIETIES. 



Check 



Dusted with commercial powdered 

 arsenate of lead, undiluted 



228.0 

 159.3 



43.2 

 11.9 



18.9 

 7.4 



1,438 

 1,199 



335 

 124 



23.2 

 10.3 



The results of the two years' work show considerable variation. 

 None of the treatments can be considered to have reduced the injury 

 profitably. Arsenate of lead, applied undiluted as a dust, gave the 



