115 



Cory (E. N.). Report of the State Entomologist.— /?('/>^. Maryland 

 Agric. Soc, College Park, Md., iii (1918), 1919, pp. 168-175. 

 [Received 4th January 1922.] 



A brief account is given of some of the chief insect pests of Maryland 

 that occurred in 1917-18, including Cydia {Laspeyresia) molesta, 

 Busck, Macrosiphum solanifolii, Ashm., Melanoplus femur-rubrum, 

 DeG., Eyiosonia {Schizoneiira) lanigenim, Hausm., Tarsonemiis pallidus, 

 Banks, Aphis maidiradicis, Forbes, A. pseudobrassicae, Davis, Brevi- 

 coryne {A.) brassicae, L., Aspidiotus perniciosns, Comst., Lygidea 

 mendax, Rent., Galenicella lufeola, Mull., Chrysobothris femorata, ¥., 

 Trichobaris trinotata, Say, Cepkus sp. (probably cinctus, Nort.) and 

 Tetramorium caespitum, L. 



Strawberries were dusted three times with a mixture of 85 per cent, 

 sulphur and 15 per cent, lead arsenate for strawberry weevil [Antho- 

 nomus signatus]. Tables are given showing the results of demonstra- 

 tions for 'the control of curcuho [Conotrachelus nenuphar], codling moth 

 [Cydia pomonella] and peach and apple diseases. 



Cory (E. N.). Report of Dusting Investigations.— i?e^^. Maryland 



Agric. Soc, College Park, Md., iv (1919), 1920, pp. 106-116. 

 [Received 4th January 1922.] 



The bulk of the information contained in this report has already 

 been noticed from another source [R. A.E., A, ix, 134]. 



Cory (E. N.). Report of Dusting and Spraying Investigations.— 



Kept. Marvland Agric. Soc, College Park, Md., v (1920), 1921. 

 pp. 318-327. [Received 4th January 1922.] 



During 1920 dusting experiments were undertaken for Eulecaninm 

 {Lecanimn) nigrofasciatum, Perg. (terrapin scale), and 94-2 per cent, 

 mortality was obtained by three applications of 60 per cent, sulphur 

 and 40 per cent. lime. Only one dusting demonstration was made 

 for strawberry beetle [Anthonomm signatus], and complete control 

 was effected with 85 per cent, sulphur and 15 per cent, calcium arsenate. 

 Examples are given showing that this formula considerably increases 

 the crop. Variable results were obtained with sulphur impregnated 

 mth 2 per cent, nicotine sulphate with approximately 30 per cent, 

 inert ingredients against Aphids on tomatos, beans and peas. Lima 

 leaves were dusted for Aphis nimicis, and complete control was 

 obtained in 36 hours. Poor results were obtained against the tomato 

 aphis [Macrosiphum lycopersici] and Acyrthosiphon {Macrosiphum) 

 pisi ; the composition used for the latter was 68 per cent, sulphur, 

 2 per cent, nicotine and 30 per cent, inert materials. 



Various spraying demonstrations on apples and peaches are recorded, 

 and in each case the cost of the materials used and the percentage 

 of fruit produced are given. Miscible or soluble oils did not prove 

 effective against the peach tree borer [Aegeria exitiosa, Say], but 

 paradichlorobenzene gives promise of being efficient [R.A.E., A, 

 viii, 189]. 



