- 582 - 
HOWARD, L. 0. (2441) 
1922. REPORT OF THE ENTOMOLOGIST, U. S. Dept. Agr. Bur. Ent. Ann. 
Rept., 32 pp. [Abstract in Rev. Appl. Ent. (A) 11: 260-263. 1923.] 
Against the pea aphid (Ac yrth o si pho n pisi ) the most successful 
remedy has "been 3/4 pt. nicotine sulphate and 8 to 10 lb. soap to 
100 gal. water. Nicotine dust has proved valuable against the common 
cabbageworm ( Pieris rapae) , cabbage flea beetles and aphids, and also 
for Haltica l itigata (strawberry leaf beetle) and in a 1.6 percent 
dust against the striped cucumber beetle ( Diabrotica vittata ) . 
WHITE, U. H. (2442) 
1922. NI COT 1KB DUST FOR THE CONTROL OF TEE STRIPED CUCUMBER BEETLE 
(A PRELIMINARY REPORT). U. S. Dept. Agr. Circ. 224, 8 pp., illus. 
[Abstract in Rev. Appl. Ent. (A) 11: 482. 1923.] 
Details are given of experiments with nicotine dust against 
Diabrotica vittat a F. This dust successfully protected young cucumbers 
melons, and related crops. 
QUINTAN I LLA, R. (2443) 
1923. THE STRIPED CUCUMBER BEETLE. Agr. Mexicano 39 (ll): 324. 
[In Spanish. Abstract in Rev. Appl. Ent. (A) 12: 44. 1924.] 
Against Diabrotic a vit tata on cucumbers and melons dusting with 
a mixture of 6 parts by weight nicotine sulphate and 94 parts slaked 
lime is advised. If desired an addition of 10 percent of lead arsenate 
may be made. About 1 lb. of dust is needed for 200 - 300 plants. 
RUSSELL, H. L. , and MORRISON, F. B. (2444) 
1923. ANNUAL REPORT OF THE DIRECTOR. Wis. Agr. Expt. Sta. for 
1921-1922, Bull. 352, 122 pp., illus. [Abstract in Rev. Appl. Ent. 
(A) 11: 280-281. 1923.] 
In regard to nicotine sulphate in dust carriers, nymphs of the 
first three stages of the squash bug Anasa tristis were killed with 
4 to 7 percent, but only about 30 percent of the fourth and fifth 
stage nymphs and adults were killed. The first three larval stages 
of the potato beetle ( Leptinotarsa decemlineata ) were readily killed 
with 5 to 10 percent nicotine sulphate combined with lime or copper 
sulphate and lime. The eggs were destroyed, and 60 to 80 percent 
of the fourth and fifth stage larvae were killed. In the case of 
the flea beetle (E pitrix c ucumeri s) 1,600 individuals were killed 
with 4 to 7 percent; 87 to 90 percent of the onion thrips (T hrips 
t abac i) were killed with 5 to 10 percent; 90 to 90 percent of 
turnip aphids ( Aphis pseudobrassicae ) were killed with 5 percent; 
and 90 percent of the melon aphid (A. gossypii ) were killed with 
7 percent and all with 10 percent. The cucumber beetle, Diabrotica 
vittata m ay be controlled with a dust containing 10 percent 
