.;: 
- 1 
As spraying cabbages with lead arsenate has not given satis- 
factory control of plutella maculipennis Curt,, one plot was treated 
with a derris preparation and a second with a spray composed of l/2 
pt . nicotine sulphate, 2 l"b. soap, 1 lb. lead arsenate, and 40 gal. 
water. Both preparations gave fairly satisfactory control, but the 
derris preparation was more toxic to both larvae and pupae, and the 
plants treated with it. were cleaner and better grown. 
MORGAN, XI. L. (1853) 
1931. EXPERIMENTS IN CABBAGE MOTH ( PLUTELLA MACULIPEFi-IIS ) CONTROL, 1930. 
Agr. Gaz. N. S. T7ales 42 (1): 57-58. [Abstract in Rev. Appl. Ent. (A) 
19: 298-299. 1931.] 
The lead arsenate dust gave the best results. Eor seedbeds, 
a 2.5 percent nicotine dust, applied every day or two, according to 
the degree of infestation, is effective. Dusting with arsenicals 
should cease a month before cutting, owing to the danger of poison, 
but a nicotine dust may be used instead if necessary. 
T7ALKER, H. G., and ANDERSON, L. D. (1869) 
1934. NOTES ON THE USE OF DERRIS AND PYRETHRUM DUSTS EOR THE CONTROL OF 
CERTAIN INSECTS ATTACKING CRUCIFEROUS CROPS. Jour, Econ. Ent. 27; 
388-393. 
In comparative tests with diluents or carriers for dusts against 
the cabbage looper ( Autographa brassica e Riley) and larrae of the 
diamond-back moth ( plutella maculipennis Curt.) finely ground tobacco 
dust gave almost as good control as talc and gypsum, 
GUNN, D. (1870) 
1918, THE SMALL CABBAGE M r TH. Queensland Agr. Jour., 2nd ser., 9j 
204-206, illus. 
The following spray mixture was found to destroy the larvae 
of this moth: l*gal. tobacco extract (not less than 6 percent nico- 
tine), 50- gal. water, and 2 lb. soap or resin. 
RIVOIRE, P. (1871) 
1923. TO COMBAT CABBAGE -BUTTERFLY LARVAE. Agr. Nouvelle 33 (1395): 
330, illus. [In French.] 
' The following spray mixture is recommended in France: 1«5 1, 
titrated nicotine (10-percent), 1.5 1. denatured alcohol (90-percent), 
200 g, black soap, and 400 1. water. 
GLEISBERG, 17. (1872) 
1929. GROSSVERSUCH ZUR K0HLSCHABE1BEKAMPFUNG 1928, Obst. u, Gemiisebau 
75 (1): 2-6, illus. [Abstract in Biol. Abs. S (11): 2889-2890. Entry 
28781. 1931.] 
