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WATSON, J. R. (2240) 
1930. REPORT QE WORK III ENTOMOLOGY AT THE FLORIDA STATION. Ela. Agr. 
Expt . Sta. Rept . , pp. 67-73, illus. [Abstract in Expt . Sta. Rec . 55: 
451-452. 1931.] 
In control work with the "bean Jassid (Empoasca. fabae), pyrethrum 
sprays consistently gave greater immediate kills and showed more lasting 
effects than did nicotine sulphate sprays used in connection with bordeaux 
mixture, soaps, or the new activators- 
The use of So-Eyne, Penetrol, or Grandpa' s Wonder Spray as 
spreaders was found to kill 93 percent or more of the green citrus 
aphid ( Aphis spiraecola ) when used with Black Leaf 40 at dilutions as 
low as 1 to 10,000. The tests indicated that the pyrethrum sprays are 
not so consistently effective as is nicotine sulphate with spreaders. 
ANONYMOUS . (2241) 
1931. REPORT OE ENTOMOLOGY AT THE OHIO STATION. Ohio Agr. Expt. Sta. 
Bull. 470, pp. 79-95. [Abstract in Expt. Sta. Rec. 64: 649-652. 1931.] 
In tests by C. R. Outright with nicotine spreaders and activators 
in work with the apple aphid, potassium oleate, sodium oleate, and 
Penetrol were found quite efficient in increasing the toxicity of nicotine, 
(pp. 650-651). Because of the excellent results obtained when Penetrol 
was used with the nicotine sulphate at dilutions of 1 to 4,000 in the 
laboratory, tests of the effectiveness of this combination in the field 
were commenced, the results of which are presented in tabular form. The 
results show that Penetrol and low strength nicotine have decided promise 
for use in the field. 
ANONYMOUS (2242) 
1931. ENTOMOLOGY AND PARASITOLOGY. Calif. Agr. Expt. Sta. Rept. 1929- 
1930, pp. 63-59. [Abstract in Rev. Appl. Ent. (A) 20: 219-220. 1932.] 
The best results against the thrips ( Hercothrips fasciatus Perg») 
on pears were obtained with a 2 percent light oil spray containing nico- 
tine sulphate at 1 to 1,600. 
CROWLEY, D. J. (2243) 
1931. WORK WITH CRANBERRY INSECTS AT THE CRANBERRY SUBSTATION. Wash. Col 
Agr. Expt. Sta. Bull. 260, pp. 66-68. [Abstract in Expt. Sta. Rec. 66: 
756-757. 1932.] 
Good control of oyster-shell scale in the migration stage was 
obtained by the use of nicotine-oil or pyrethrum-oil combinations. In 
work with spreaders or stickers, better results were obtained where 
nicotine and crystal potassium oleate were used than where nicotine and 
fish-oil soap or nicotine with other combinations were used. In control 
work with the cranberry fruit worm, the best results were obtained by 
spraying with Evergreen 1 to 400 plus 0.75 percent summer oil or with 
nicotine 1 to 400 plus 16 lb. crystal potassium oleate soap when the 
moths were emerging in -j ,'\y. 
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