- 594 - 
Encircling the "base of each post with a dust of 3 percent free 
nicotine arid lime will prevent springtails from ascending for 3 days. 
After the "beds are c r sed and "before the mushrooms appear, nicotine- 
lime dust may "be applied to the casing soil to control springtails. 
STICKNEY, F. ' (2496) 
1924. DATE PALM INSECTS. Rept. 1st Date Growers' Inst., pp. 16-17, 
Coachella, Calif. [Abstract in Rev. Appl. Ent. (A) 16: 69-70. 
1928.] 
The mite Paratetranychu s heteronychus Ewing is easily controlled 
during the season by nicotine-sulphur dust or a tar-distillate emulsion. 
A nicotine-soap spray has been employed successfully against the date 
bug Asarcopus palmarum Horv. 
THOMAS, C. A. (2497) 
1934. EURTHSR OBSERVATIONS ON MUSHROOM INSECTS. Jour. Econ. Ent. 
27: 200-208. 
A satisfactory kill of springtails was obtained by broadcasting 
a pound of a high nicotine content fumigating powder over the surface 
of each 60 foot bed. Nicotine also kills many adult phorids and other 
dipterous larvae on the bed surface. Nicotine dusts have value against 
the sciarid flies, but are still in the experimental stage. Strong 
nicotine dusts in actual contact with adult mites of Tyroglyphus 
lintneri Qsborn will kill many of them. 
