- 454 - 
The leaves of gherkin seedlings in Schleswig-Kolstein were 
injured "by the above springtail . In one serious case it was completely 
controlled 'oy a single application of a spray containing 0.5 percent 
crude nicotine. 
RIPPER, 17. (1964) 
1930. MUSHROOM CO LIMB OLA.. THE BIOLOGY AND CONTROL OF HYPOGASTRURA 
l IAFJuR IALIS TULLBG. Ztschr. Anger/. Ent . 16(2): 546-584, illus. 
[In German. Abstract in Rev. Appl . Ent. (A) 18: 698-699. 1930.] 
Tobacco dust was found ineffective against mushroom Collembola.. 
LEA, A. M. • (1955) 
1922. THE LUCERNE PLEA ( SMY NTHURU S V IR ID I S L. ) Jour. Dept. Agr. So. 
Aust. 25(5): 423-425, illus. [Abstract in Rev. Appl. Ent. (A) 11: 
153. 1923.] 
Sprays of tobacco should be useful. 
NOTAN, L. J. (1956) 
1927. SEASONABLE HINTS. Jour. Dept. Agr. T7. Aust. 4(1): 78-82, illus. 
[Abstract in Rev. Appl. Ent. (A) 15: 350. 1927.] 
Control measures against the lucerne flea ( Smynthurus viridis L.j 
for use on limited areas, which must be applied promptly on the first 
appearance of the pest include a spray of 1 pt. 40-percent nicotine sul- 
phate, 4 lb. soap dissolved by boiling and 80 imperial gal. water. 
MALENOTTI, E. • (1967) 
1928. SMYNTHURUS VIRIDIS LUBB . INJURIOUS TO TCiEAT . Atti Accad. Agr. 
Sci. e Lett. Verona (5) 5, 11 pp. [In Italian, Abstract in Rev. 
Appl. Ent. (A) 16: 595-596. 1928.] 
An infestation on whea.t was controlled "by spraying with either 
a 1 l/2 percent solution of lead arsenate paste or with a 2 percent 
solution of carbolic to"bacco extract. 
MOORE, E. S., and SMITH, A. J. (1968) 
1933. PESTS AND DISEASES IN TOBACCO SEED-BEDS. Fmg. So. Africa. 
Reprint no. 46, 4 pp., illits. [Abstract in Rev. Appl. Ent. (A) 
22-49. 1934.] 
Control measures advised include spraying with 6 to 8 percent 
tobacco extract (1:80) against Collembola and (with the addition of 3 
to 4 oz. soap. to 4 gal. of the mixture) against aleurodids. 
