373 



work carried out with a view to discovering the possible means by 

 which it might be introduced into Wisconsin is reviewed. 



Jones (L. K .) . Diseases and Insect Injuries of Cane Fruits in Wisconsin, 



I919.--Bienn. Kept. 1919-20. Wisconsin State Dept. Agric, 

 Madison, Bull. 33, 31st December 1920, pp. 149-157, 5 figs. 

 [Received 21st May 1921.] 



The insects recorded are : Oberea tripunctata, Swed. (cane-borer) 

 occurring on red raspberries and once recorded on blacklDerries — the 

 girdled tips of the canes should be cut and burned ; OecantJws nigri- 

 cornis, Wlk. (tree cricket) causing injury to raspberries and black- 

 berries by puncturing the canes for oviposition ; and Byturus unicolor. 

 Say, Monophadnoidcs rubi. Harris, Agrilus nificollis, F. (red- 

 necked cane-borer), Pennisetia (Bembecia) niarginata, Harris 

 (blackberry crown-borer), and Lecanium sp., all of which occur 

 on raspberries. 



Injurious Insects and other Pests. — Kansas Agric. Expt.Sta., Director's 

 Kept., 1918-19. Manhattan. 1920, pp. 41-47. [Received 18th 

 May 1921.] 



The injurious insects dealt with during the \-ear include: the 

 Hessian fly [Mayetiola destructor], the cornearworm [ Heliothis obsoleta], 

 the apple-leaf skeletoniser [Canarsia hammondi], Lachnosterna crassis- 

 sima, Ligyrtis gibbosus. L. relictus, various Scarabaeids, and the Tene- 

 brionids, Eleodes hispilabris. E. obsoleta. E. suturalis, E. opaca and 

 E. tricostata. 



The insects occurring on lucerne were Pyralis farinalis (meal snout 

 moth), Hypsopygia costalis (alfalfa hayworm), Loxostege similaUs 

 (garden webworm) and Prodenia ornithogalli (cotton cutworm). The 

 last-named was controlled by spraying with lead arsenate. 



Hinds (W. E.) & Thomas (F. L.). Poisoning the Boll Weevil. — 



Alabama Agric. Expt. Sta., Auburn, Bull. 212, November 1920, 

 pp. 53-84, 1 plate, 16 tables. [Received 28th May 1921.] 



Dusting experiments with calcium arsenate against the boll weevil 

 [AntJionomus grandis] were carried out in Alabama from 1918 to 1920, 

 details of which are described. In 1918 the rate of application 

 varied from 1 to 5 lb. per acre at intervals of about 14 days, but the 

 slight increase in yield did not warrant the expense of dusting. This 

 apparent failure was partly due to weather conditions, the heat 

 and drought controlling most of the weevils, and also to the 

 intervals between applications being too great and the work not 

 being continued long enough for the results to become cumulative 

 under existing conditions. Experiments showed that the weevils 

 will live, for a short period at least, without water and that dew 

 is not indispensable in poisoning them. The occurrence of moisture 

 on the plants after the poison has been applied does not increase the 

 mortality. In 1919, experiments as to the cost of dusting with 

 calcium arsenate showed that it is advisable to keep the acreage of 

 cotton moderate and to make that area as fertile as possible so as to 

 increase the productiveness while decreasing the area under cultivation. 

 Under these conditions, should a heavy weevil infestation be indicated, 

 the pest may be reduced to below 30 per cent, until after a full crop 

 of bolls is beyond weevil damage b}^ dusting every fifth day. 



