384 



Massnahmen zur Bekampfung der Wiesenzunslerraupen, Phlyctae- 

 nodes sticticalis, L. [Measures against Loxostege sticticalis.] — 

 Btmdesanst. f. Pflanzenschutz , Vienna [n. d.], 2 pp. [Received 

 24th May 1922.] 



These recommendations are based on experience gained in July 

 1921 against the beet webworm, Loxostege {Phlyctaenodes) sticticalis, 

 L. The chief points have already been noticed from another source 

 [R.A.E., A, X, 255]. 



Special measures are needed when lucerne or similar crops are 

 attacked. Lucerne should be cut immediately it is infested. It may 

 be used as green fodder, or if it is allowed to grow for hay the larvae 

 ultimately abandon the dry material and feed on the lucerne stubble, 

 from which they can be collected by dragging a suitable metal gutter 

 across the field. In the case of a lucerne field that it is intended to 

 plough, ploughing. should be done at once if the larvae appear, and 

 isolation trenches should be dug around it, in which they can be 

 destroyed. 



Herstellung von Tabakbruhe aus Tabakstaub. [The Preparation of 

 Tobacco Spray from Tobacco Dust.] — Landw -hakteriol. & 

 Pflanzenschutzstaiion, Vienna [n. d.], 1 p. [Received 24th 

 May 1922.] 



To prepare a spray containing about 1 per cent, of tobacco 

 extract, 2 lb of tobacco dust, as obtained from the Austrian Regie, 

 is soaked^ — with repeated stirring — in 5 gals, water and then allowed 

 to settle. The liquid is then filtered through linen and is ready for 

 immediate use. The addition of 1 part lysol to 20,000 of the liquid 

 acts as a preservative. Wetting power is enhanced by adding soft 

 soap or lysol prior to spraying. By using a larger proportion of dust, 

 a stronger solution, such as is more generally useful, can be readily 

 obtained. 



Wahl (B.). MaikaJerflug, -BekampJung und -Verwertung. [The 

 Flight, Control and Utilisation of Cockchafers.] — Mitt. Staatsanst. 

 f. Pflanzenschutz, Vienna, 1921, 6 pp. [Received 24th May 1922.] 



In expectation of an exceptional occurrence of cockchafers 

 [Melolontha] in Austria in 1921, directions are given as to the best 

 methods of collection, this measure being compulsory by law. The 

 collected beetles can be fed to pigs or used as manure, and various 

 methods for utilising them in these ways are described. Loose compost 

 heaps may be used to attract the ovipositing females. 



DupoRT (L). Rapports sur le Fonctionnement de la Station ento- 

 mologique de Cho-Ganh. — Supplements to Bulls. 132 & 133, 

 Chambre d'Agric. Tonkin & Nord-Annam, Hanoi, nos. 13 & 

 14, April-September 1921, 1922, 2 pp. & 3 pp. [Received 24th 

 May 1922.] 



In continuation of the work on the parasites of Xylotrechus qtiadripes 

 [R.A.E., A, ix, 510], the breeding of the Braconid, Doryctes strioliger, 

 Kieff., has been carried on to the greatest extent possible, and nearly 

 one million insects were reared during the nine months of 1921. 

 Unfortunately, weather conditions seem to have a very marked 

 influence on the development of this species ; cloudy, humid weather 



