- 515 - 
Q.. NICOTINE TANNATE AND CLEATS, 1918-1934 
PIIMER, E. S. (,-3180) 
1931. COMPARATIVE PEEPOEMANCE OP NICOTINE TANNATE AND LEAD ARSENATE 
AGAINST THE CODLING MOTH . Jour. Econ. Ent. 24: 277-283. [Abstract 
in Rev. Appl. Ent. (a) 19: 358-359. 1931.] 
Further experiments were carried out in New Jersey in 1930 
with nicotine tannate [( Rev. Appl. Ent. (A) 18: 386]. As tests in 
1329 showed rapid disappearance of the nicotine tannate from the 
fruit and foliage, spray applications were made at 10-day intervals 
in order to maintain a more constant coating of the material. Tests 
were made on early and late fruit from the seven-day spray onward with 
tank-mixed nicotine tannate (2 lb. tannic acid and 1 pt . 50-percent 
nicotine to 100 gal. spray material); and comparative tests with tank- 
mixed and powdered nicotine tannate (containing approximately 20 
percent nicotine and applied at the rate of 2 lb. to 100 gal.) were made 
on late frait against the second brood of the moth, following first 
brood treatment with lead arsenate. Both forms of nicotine tannate 
were applied with 2 pounds skim milk as spreader and 6 pounds col- 
loidal sulphur as a fungicide. The results showed that nicotine tan- 
nate controls the codling moth ( Carp o caps a pomonella L. ) as well as 
lead arsenate, provided that a sufficient coating is maintained upon 
the foliage during the period of moth activity. There is need for 
further study to improve the adhesive qualities of nicotine tannate 
before it can be classed as an efficient arsenical substitute. 
GINSBUEG, J. I,:., and MANN, R. F. (2181) 
1931. STUDIES flTTH HYDRATSD PERRIC OXIDE AS COERECTIVE AND STICKER FOR 
LEAD ARSENATE AND NICOTINE TANNATE. Jour. Scon. Ent. 24: 595-701. 
[Abstract in Rev. Appl. Ent. (a) 19 J 545. 1931.] 
A product consisting of mixtures of ferric oxide and powdered 
skim milk was used as a spreader, sticker, and corrective with lead 
arsenate and nicotine tannate, and it was found that in the case of 
each of the insecticides, more remained en the foliage than when lime 
was used as a corrective. 
READIES, T. J. (2182) 
1931 (?) A FIVE-YEAR COOPERATIVE CAMPAIG-N AGAINST THE CODLING MOTH. 
Peninsula Hort. Soc. [Del.] Trans. 1930, pp. 52-59. [Abstract in 
Rev. Appl. Ent. (a) 19: 270. 1931.] 
Spraying experiments with a pyre thrum white oil and with nicotine 
tannate, which were tested as substitutes for sprays containing an 
arsenical, show that these insecticides are effective in control and 
by their use the necessity nf washing the fruit is avoided. 
