592 



UzEL (H.). Der Tausenfuss, Blaninlus gutttilatus, Gerv., ein Schadiger 

 der Zuckerriibe. [\ Millipede, B. gtUtulatus, injurious to Sugar- 

 beet.] — Zcitschr. Zuckerind. d. Cechoslov. Republ., Prague, xliv, 

 1920, pp. 299-300. (Abstract in Zeitschr. Pflanzenkr., Stuttgart, 

 xxxi, no. 3-4, 1921, p. 159.) 



At the end of April 1920 a sugar-beet field in Bohemia was infested 

 with Blankdns gnttulatus, Gerv. Like Julus unilineatiis, Koch, this 

 millipede is brought to the fields in stable manure. Jablonowski 

 reports its presence in Hungary in parts of fields where leaves, etc., 

 have fallen and rotted. An infested field should be rolled, so as to 

 hinder access to the young plants and germinating seeds. Collection 

 is not practicable, but potatoes may be used as baits. Dead earthworms 

 are a suitable bait only on garden beds. Schmitt advises that if a 

 second beet crop is being grown the seed should be treated for 

 twenty minutes in a solution of 5 parts magnesium sulphate and 

 1 part carbolic acid in 100 parts water. 



VON Wahl ( — ). Schadlinge an der Sojabohne. [Pests of the Soy 

 Bean.] — Zeitschr. Pflanzenkr., Stuttgart, xxxi, no. 5-6, 1921, 

 pp. 194-196. 



In the course of three years the author has had an opportunity of 

 observing at Augustenberg a number of pests on some varieties of 

 Soja maxima, which up to then had not been grown in Baden. It 

 was found that the insects recorded from dwarf beans all occurred on 

 soy beans, so that the following list, except for Tychea phaseoli, 

 applies to both crops. 



The first seedlings were attacked by a number of enemies, 

 including Agriotes lineatns, L., and Mclolontha meloloniha {vidgaris), 

 which were able to kill the plants when they were as nmch as 18 inches 

 high. In 1916 some soy bean planis were destroyed at the end of 

 July by Tychea phaseoli, Pass. 



About the middle of May the Coleoptera, Phyllotreta nemorum, L., 

 Psylliodes chrysocephala, L., and Sitones sp, appeared. From the 

 end of June onwards the following thrips were observed on the leaves : 

 Thrips physopus, L., T. longicollis, Uzel, T. discolor, Hal. (?), T. major, 

 Uzel, T. albopilosns, Uzel, Aeolothrips fasciatiis, L., .4. albocinctus, 

 Hal., Smymothrips hiuncinatiis, Uzel, and Baliothrips dispar, Hal. 

 Lygns pratensis, Fall., another undetermined Capsid, and an Aphid, 

 Siphonophora ulmariae, Schr., also attacked the foliage. 



In August, a mite, Epitetranychus althaeae, Hanst., increased 

 enormously, and caused a yellowing of the leaves. 



It is clear that the soy bean has found so many enemies in Baden 

 among the pests that infest allied plants as to render problematical its 

 cultivation on a large scale. 



PiATTi ( — ). Azione della Chloropicrina. [The Action of Chloro- 

 picrin.] — Riv. di Ampel., Leghorii, no. 9. (Abstract in Riv. 

 Agric] Parma, xxvi, no. 41, 14th October 1921, pp. 593-594.) 



Chloropicrin, at the rate of 20 cc. per cubic metre of space, whether 

 the receptacles are empty or filled with wheat, and allowed to act for 

 one week at a temperature of 59°-68° F., kills Calandra granaria, 

 Tenebrioides manritaniciis, Laemophloeus ferrugineus and the larvae 

 of the moths, Sitotroga cerealella,Tinea granella and Plodia americana. 

 It is therefore superior to carbon bisulphide, w^hich is inflammable 

 and must be used in larger quantities. 



