366 



So far the results obtained show that the codling moth [Cydia jMmonelki] 

 and curculio [Conotrachelus nenuphar] can only be controlled by this 

 method when the infestation is very slight. Several formulae that 

 have been tested are given and the mode of application described. 



Bryan (C. E.). How many Applications of Spray Material can be 

 applied profitably in developing a Peach Crop. — Rept. Maryland 

 Agric. Soc, College Park, Md., ii (1917), 1st March 1918, pp. 

 98-102. [Received 25th June 1919.] 



The following method has proved successful in the author's personal 

 experience. A dormant spray of 10 per cent, lime-sulphur is applied 

 3 to 4 weeks before the blossoms open. As soon as the fruit is set a 

 spray of 20 lb. of atomic sulphur, 20 lb. of hydrated lime made into 

 milk, and 5 lb. of dry arsenate of lead to 200 U.S. gals, of water should 

 be applied and repeated in about 3 to 4 weeks time. The fourth and 

 subsequent sprays should be of atomic sulphur only and applied every 

 3 to 4 weeks until within 4 weeks of harvest. During rainy weather 

 the spraying should be repeated every 3 weeks. 



Work connected with Insect and Fungus Pests and their Control. — Rept. 

 Agric. Dept. Montserrat 1917-18; Barbados, 1919, pp. 29-30. 

 [Received 25th June 1919.] 



The extent of attacks of cotton-stainers [^Dysdercus] in 1917 was 

 similar to that in previous years. Owing to the results obtained in 

 St. Vincent from the destruction of the silk-cotton and mahoe trees, 

 the community have expressed the desire that a similar ordinance be 

 put into force in Montserrat. 



It is expected that this pest will be still more prevalent in 1918 

 owing to the increased proportion of silk-cotton trees bearing fruit 

 during the year. A small Malvaceous plant {Sida acuminata) has also 

 been definitely connected with supporting the existence of cotton- 

 stainers from one season to another. 



Runner (G. A.). The Tobacco Beetle : An Important Pest in Tobacco 

 Products. — TJ.S. Dept. Agric, Washington, D.C., Bull. no. 737. 

 17th March 1919, 77 pp., 4 plates, 16 figs. [Received 24th June 

 1919.] 



This bulletin describes the character and extent of damage done by 

 Lasioderma serricorne, F., chiefly to stored tobacco. All stages of the 

 beetle are described. There are usually 3 generations in the year, but 

 under warm conditions there may be as many as 5 or 6. The complete 

 life-cycle varies from 45 to 70 days according to the temperature. 

 Eggs are deposited in the food substance. The larvae appear in 6 to 

 10 days and pupate after 30 to 50 days. The pupal stage lasts 5 to 10 

 days and the adults live 3 to 6 weeks. Hibernation usually occurs in 

 the larval stage. 



The erroneous belief that L. serricorne attacks growing tobacco is 

 probably due to confusion with other tobacco pests, such as Epitrix 

 parimla, F. (tobacco flea-beetle) ; Catorama tabaci, Guer. (larger 

 tobacco beetle) ; Silvanus surinamensis, L. ; and Cathartus advena, 

 Walt. 



