529 



Dudley (F. H.)- Report of State Horticulturist. — 18th Ann. Repf. 

 Maine Cominiss. Agric, Augusta, 1919, pp. 31-69, 10 figs. 

 [Received 12th October 1920.] 



The following pests are briefly described, and suitable remedial 

 measures are advocated : — Rhagoletis pomoneUa (apple maggot) ; 

 Aphis pomi (apple aphis) ; Ancylis nubeculana (leaf sewer) ; Tortrix 

 (Archips) argyrospila (fruit-tree leaf-roller) ; Coleophora fletcherella 

 (cigar case-bearer) ; C. malivorella (pistol case-bearer) ; Bucculatrix 

 pomifolieUa ; Heterocordylus malinus (apple red bug) ; Canarsia 

 hammondi (apple-leaf skeletoniser) ; Heterocampa guttivitta, which has 

 only one generation a year in Maine ; Graptolitha (Xylina) anten7iai<i 

 (green fruit worm) ; Lygus pratensis (tarnished plant-bug) ; Macrodac- 

 tylus suhspinosus (rose chafer) ; Enocampoides {Eriocampa) cerasi (pear 

 slug) ; Galerucella luteola {Galeruca xanthomelaena) (elm leaf beetle). 



Beneficial insects include:— the QoQQinQ\Sidi. Adalia hipunctata : 

 Calosoma spp., predaceous on gipsv moth {Porthetria dispar) and other 

 Lepidopterous larvae : Podisus rnodestus ; Lebia grandis, predaceous 

 on cutworms, etc. ; Thalessa lunata, a parasite of borers ; Pimpla 

 conquisitor, a parasite of tent caterpillars {Malacosoma) : and 

 P. inquisitor, a parasite of tussock caterpillars (Hemerocampa). 



Formulae are given for the preparation of poison-baits for grass- 

 hoppers and cutworms, and sticky bands for trees, and a spray 

 calendar is included. 



McIntire (M. H.). Report of the Field Agent, Gypsy Moth Work. — 

 18th Ann. Rept. Maine Commiss. Agrie., Augusta, 1919, pp. 70-72. 

 [Received 12th October 1920.] 



Work on the gipsy moth [Porthetria dispar] was continued during 

 the year [R.A.E., A, viii, 220]. Banding with burlap and spraying 

 were begun on 1st June, and 12,500 trees were treated. Durmg June, 

 July and the beginning of August, lead arsenate was used for spraying. 

 Owing to the action of the Hberated parasites there is an apparent 

 decrease in the number of caterpillars in the infested section, and the 

 large sums of money necessarily expended on this work have been 

 fully warranted by the results. 



Sawders (G. E.). Apple Spraying. — 18th Ajin. Rept. Mai7ie Commiss. 

 Agric, Augusta. 1919, pp. 199-209. [Received 12th October 

 1920.] 



Experiments show that russeting of apple fruit due to the appHcation 

 of Bordeaux mixture may be avoided by the addition of three parts 

 of lime to every one part of Bordeaux mixture. In Nova Scotia 

 russeting is prevented by substituting some other spray for Bordeaux 

 mixture in the third, or after-blossom, spray. One pound of soluble 

 sulphur, \ lb. calcium arsenate and 5 lb. hydrated lime to 50 U.S. gals, 

 water may be safely used as a calyx spray. Magnesium arsenate may 

 replace calcium arsenate, as it is apparently safer. Sucking insects 

 may be controlled by the appHcation of 3 lb. soluble sulphur and 1 pt. 

 Black -leaf 40 to 120 U.S. gals, of water. This is also efiective against 

 canker-worms if appHed before the larvae are half grown. Rhagoletis 

 poinonella (railroad worm) may be controlled by the appKcation of 



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