405 



means of spreading infestation is from dirt from the beet dumps ; 

 care should therefore be taken to prevent scattering of the soil. 

 Co-operative action should at once be adopted when the pest has been 

 found in any locality. 



Early planting is of advantage provided irrigation water is available, 

 but where rainfall must be relied upon, the raising of beets on even 

 slightly infested soil would hardly be worth while. 



The only cultivated crops found to be injured were cabbage, cauli- 

 flower, turnips, table beets and mangels ; the pest has also been found 

 on mustard, pigweed and salt weed. 



Clean seed and clean culture are essential for good results to be 

 gained by crop rotation. After a short crop rotation, such as one or 

 two years of peas or beans, it is possible to obtain a single good crop 

 of beets, though a second almost invariably fails. Complete eradication 

 of the Nematode, even by a very long crop rotation, is exceedingly 

 difficult, if not impossible. 



Phillips (E. F.). Beekeeping in the Clover Region. Beekeeping 

 in the Buckwheat Region. Beekeeping in the Tuhp-tree Region. 



— U.S. Dept. Agric, Washington, B.C., Farmers' Bulls. 1215, 

 1216, & 1222, January & Februarv 1922 ; 27 pp., 7 figs. ; 26 pp., 

 7 figs. ; 25. pp., 6 figs. [Received 7th June 1922.] 



Instructions are given in the management of apiaries with a view 

 to obtaining the best honey production under various conditions. 



MiDDLETON (W.). Sawflies injurious to Rose Fohage. — U.S. Dept. 

 Agric, Washington, D.C., Farmers' Buh. 1252, February 1922, 

 14 pp., 7 figs. [Received 7th June 1922.] 



The Tenthredinids dealt with are Cladius isonierus, Norton (bristly 

 rose slug), a species native to the United States ; Eriocampoides 

 (Caliroa) aethiops, F. (European rose slug), occurring in Europe and 

 North America ; and Emphyiiis cinctipes, Norton (coiled roseworm), 

 chiefly noted for its habit of boring into the end of pruned shoots, 

 where it passes the resting stage. 



The life-history of these sawflies and the damage caused b}^ them 

 are briefly described. 



They may be easily controlled by a strong stream of water applied 

 often and from different angles so as to knock the larvae from the 

 leaves ; should this treatment not be practicable, a spray of 1 lb. 

 powdered lead arsenate to 50 U.S. gals, water applied with a large 

 compressed air hand-sprayer or barrel pump may be used. One part 

 of 40 per cent, nicotine sulphate to 800 of water, with the addition 

 of some fish-oil or laundry soap, is also effective against the larvae as 

 well as against Aphids. Clean cultivation is important. 



Hunter (W. D.) & Coad (B. R.). The Boll-weevil Problem.— U.S. Dept. 

 Agric. Washington, D.C., Farmers' Bull. 1262, February 1922, 

 . 31 pp., 5 figs. ' [Received 7th June 1922.] 



A general account of the boll-weevil, Anthonomus grandis. Boh., 

 in the United States is given. The remedial measures suggested are 

 based largely on cultural methods. Where poisoning is required, 

 calcium arsenate should be used in the manner that has been shown 

 to give good results [R.A.E., A, viii, 457 ; ix, 373]. 



