24 BULLETIN 1032, U. S. DEPAETMENT OF AGEICULTUEE, 



Table 3. — Outline of miscellaneous spraying experiments, etc. — Continued. 







Number of gallons used calculated per 







I 









acre per application. 





Total 



Total 







Spray materials, dosage, 













number 

 of ber- 



number 

 of ber- 



Gain 



over 



check. 



Plat 













No. 



etc. 











Aver- 



ries 



ries free 







Mavl3 



June 12. 



July 1 



July 16 



age per 



exam- 



from 







and 14. 



and 2. 



and 17. 



appli- 



ined. 



injury. 

















cation. 



'■ 







V 



40 per cent nicotine sul- 

 phate, 1-600 + flsh-oil 















Percent. 



Per cent. 





soap, 2-50 



295 



270 



270 





278 



820 



91.21 



14.19 



VI.... 



40 per cent nicotine sul- 

 phate, 1-600 -t- flsh-oil 





















soap, 2-50 



295 



270 



270 



500 



333 



485 



94.22 



17.20 



VII... 



Powdered arsenate of 1 ead , 







2i-50-t- fish-oi 1 soap , 2-50 . 



340 



300 



260 





300 



401 



83.04 



6.02 



VIII.. 



Powdered arsenate of lead, 





















2J-50-(-flsh-oilsoap, 2-50. 



340 



300 



260 



450 



337 



172 



76.16 



.96 



IX.... 



Nicotine oleate, 1-300 



295 



270 



270 





278 



433 



91.45 



14.43 



X 



Nicotine oleate, 1-300 



295 



270 



270 



320 



289 



862 



91.99 



14.97 



XI.... 



40 per cent nicotine sul- 





















phate, 1-800+ elue, 1-200. 



290 



280 



310 





293 



703 



83.64 



6.62 



XII... 



40 per cent nicotine sul- 





















phate, 1-800-t-glue, 1-200. 



290 



280 



310 



620 



375 



600 



86.16 



9.14 



XIII.. 



Nicotine oleate, 1-400 . 



300 



320 



350 





323 



1,012 



92.29 



15.27 



XIV.. 



Nicotine oleate, 1-400 



300 



320 



350 



660 



407 



1,061 



91.42 



14.40 



XV... 



Nicotine oleate, 1-500 



330 



380 



320 





343 



7S3 



87.64 



10.62 



XVI.. 



Nicotine oleate, 1-500 



330 



380 



320 



600 



407 



827 



92.38 



15.38 



XVII. 



"Phenolcompound"No. 





















1,1-500. 



420 



560 



320 



560 



460 



628 

 74 



73.56 

 77.02 



3.46 



XVIII 



Check, untreated 





















Note. — Mist nozzles as shown in figure 13 used for all applications, with hand barrel spray pump giving 

 pressure of 50 to 100 pounds. 



Nicotine Sulphate. 



The conclusions drawn by Scammell " regarding the effectiveness 

 and safety of 40 per cent nicotine sulphate in the control of the 

 blackliead fireworm were borne out in the work on the Pacific coast. 

 Of the various strengths used, 1 part to 800 parts of water with 2 

 pounds of fish-oil soap to each 50 gallons of solution, applied 4 times, 

 seemed to give the highest percentage of cranberries free from fire- 

 worm injury; it will be noted in Table 3, however, that 4 applica- 

 tions of this material, used 1 to 1,000, gave nearly as great a gain 

 over the check. The fact that it gave a higher percentage of clean 

 fruit than 1 to 600 was probably due to the fact that there was a 

 larger setting of fruit on this plat and perhaps a somewhat lighter 

 infestation than on the one treated with the solution of the strength 

 of 1 to 600. •. 



Nicotine Oleate. 



Nicotine oleate was made by stirring together the proportions of 

 a 40 per cent solution of free nicotine and oleic acid according to 

 the directions given by Moore ^^ as follows : 



" Scammell, H. B. A New Method of Controlling the Blackhead Fivewonn. In Proc. 

 47th Ann. Conv. Amer. Ci'anberry Growers' Assn. (Aug. 26, 1916). p. 8-12; Cranberry 

 Insect Problems and Suggestions for Solving Them, V. S. Dept. Agr., Farmers' Bui. 860, 

 p. 4-9, 1917. 



12 Moore, William. A Promising New Contact Insecticide. In Joura. Econ. Ent., v. 11, 

 no. 3, p. 341-.S42, 1918. 



