461 \^ NOV 9 - 1921 



It was found that the first brood of theVo^feig moth [Cydic 

 pomonella] emerged over a long period. Five spr^{^^o^§ p^^^^^ 

 viz., the calj^x spray, the second application just beforethfrfl»€BeillTurn 

 emergence of the larvae of the first brood, the third about three weeks 

 afterwards, a fourth at the beginning of the emergence of the larvae 

 of the second brood, and the last about three weeks later. If the warm 

 weather continues as late as August and September, an additional 

 spray just before picking time maj^ be advisable. 



A number of standard sprays were tested against the San Jose 

 scale [Aspidiotus perniciosus], all of which proved very effective. 

 A large number of the scales were killed by adverse climatic conditions. 



Wakeland (C). Fighting Alfalfa Weevil. — Idaho Univ. Extens. 

 Div., Boise, Extens. Bull. 50, March 1921, 27 pp., 9 figs. [Received 

 25th July 1921.] 



This paper deals fully with the life-history of and control measures 

 against Hypera {Phytonomus) variabilis (alfalfa weevil), and the 

 damage to crops in Idaho by this pest. The bulk of the information 

 has already been noticed [R. A.E., A, vi, 339 ; ix, 166]. 



Spraying with 2 lb. calcium arsenate to 100 U.S. gals, water per 

 acre has proved the most satisfactor3' remedial measure. 



The Tchneumonid larval parasite, Bathyplectes curculionis, intro- 

 duced from Europe, is rapidly spreading, but cannot be relied on for 

 complete control. There is at least a partial second generation of 

 the parasite. If the other natural enemies that control this pest in 

 Europe could be successfully introduced into Idaho, they might prove 

 more effective. 



Weiss (H. B.). The Gipsy Moth {Porthetria dispar, L.). — New Jersey 

 Dept. Agric, Bur. Statistics and Inspec, Trenton, N.J., Circ. 

 38, May 1921, 17 pp., 9 figs. 



Porthetria dispar, L. (gipsy moth) was first discovered in New Jersey 

 in 1920. Since November of that year, at least one hundred men have 

 been continuously at work in the State carrying out suppression 

 measures. The most severely infested areas have been cut and burned. 

 The number of egg clusters treated with creosote in various town- 

 ships is listed, and spraying has been thoroughly executed. 



Much information on the seasonal history, food-plants, injury, 

 parasites and control of the gipsy moth is quoted from Farmer's 

 Bulletin 345 of the U.S. Dept. Agric. 



LoFTiN (U. C), McKiNNEY (K. B.), & Hanson (W. K.). Report on 

 Investigations of the Pink Bollworm of Cotton in Mexico.— U.S. 

 Dept. Agric, Washington, B.C., Bull. 918, 19th April 1921, 

 64 pp., 5 plates, 11 figs. [Received 22nd July 1921.] 



An account is given of Platyedra (Pecfinophora) gossvpiella (pink 

 bollworm of cotton) as occurring in Mexico, where about 25 per cent, 

 damage is done in the Laguna district. The remedial measures 

 advocated include early cleaning of the fields by burning all the old 

 stalks and bolls, the cleaning and fumigation of gins, oil mills, and 

 seed warehouses, the fumigation of all seed kept on the plantations, 

 and the early maturing of the crops. 



In an appendix, Busck's description of the various stages is quoted, 

 with illustrations. 



