48 EXPERIMENT STATION RECORD. 



soil conditions required by tills plant rather than to any specific organism. 

 Brief suggestions are given relative to proper soil treatment for sweet peas. 



Control of insect pests and fungus diseases, E. E. Scroll {Tex. Dept. Ayr. 

 Bui. 9, 1911, pp. 23). — A popular bulletin, discussing cultural methods of insect 

 control, the preparation and application of insecticides, and fungicides and 

 their uses. 



Insect pests and diseases of the apple {Bui. [Maine'] Dept. Agr., 10 {1911), 

 No. 3, pp. 16, pis. 2). — This bulletin contains brief descriptions of the most 

 injurious pests and diseases of the apple, including methods of control. 



Lime-sulphur sprays for apple diseases, W. M. Scott {Rpt. Va. State Hort. 

 Soc, 15 {1910), pp. n.'i-18.'i). — In continuation of previous investigations 

 (p]. S. R., 23, p. 51), experiments with lime-sulphur sprays as substitutes for 

 Bordeaux mixture in the treatment of apple diseases were conducted in Vir- 

 ginia in 1910, which for the most part corroborated previous results. 



Lime-sulphur solution, so diluted as to contain 4 lbs. of sulphur in each 50 

 gal. of spray, proved to be a good substitute for Bordeaux mixture in the con- 

 trol of apple scab, fruit spot, leaf spot, and cedar rust. Bordeaux mixture, 

 however, was superior to the lime-sulphur preparations in the control of bitter 

 rot. 



In spraying for bitter rot, the early lime-sulphur applications for scab may 

 be followed at the proper time with Bordeaux, thus avoiding the russet and 

 yet controlling the rot. Arsenate of lead may be safely and successfully used in 

 combination with the dilute lime-sulphur solution for the control of the codling 

 moth and other insects. A course of treatment best suited to orchards in Vir- 

 ginia and adjacent districts is outlined. 



Further experience with fungicides and spraying apparatus, M. B. Waite 

 {Rpt. Va. State Hort. Sov., 15 {1910), pp. 184-190).— \Y\th some modifications 

 the experiments to determine the effect of various sulphur sprays on the apple 

 (E. S. R., 23, p. G.51) were continued in the vicinity of Winchester, Va., in 1910. 

 The test was conducted with the Yellow Newtown, York Imperial, and Ben Davis 

 varieties. The plats contained the following treatments: Control, unsprayed ; 

 3:3:50 Bordeaux; arsenate of lead used alone; copper sulphid; iron sulphid; 

 self-boiled lime-sulphur ; self-boiled lime-sulphur i and commercial lime-sulphur 

 solution 5 ; commercial lime-suphur solution, li gal. to 50 ; commei'cial lime- 

 sulphur solution plus gypsum ; commercial lime-sulphur solution, 1^ gal. plus 

 lime. Arsenate of lead at the rate of 2 lbs. to 50 gal. was added to each of the 

 mixtures. 



With minor variations the mixtures gave identically the same results as in 

 the previous year. None of the materials tested appeared to have enough 

 superiority over the lime-sulphur solution, especially when combined with 

 arsenate of lead, to justify their use. Notes are given on the progress being 

 made in the machinery iind equipment for spraying. 



[Spraying experiments in 1910], H. S. Reed {Rpt. Va. State Hort. Soc, 

 15 {1910), pp. 190-196). — Some experiments conducted by the A'irginia Station 

 for the control of foliage* diseases of the apple are reported. The tentative 

 results secured from one season's work are summarized as follows: 



Apple foliage diseases due to frog eye spots were well controlled by the use 

 of either commercial or self-boiled lime-sulphur without injury to the fruit. 

 Bordeaux mixture was superior to lime-sulphur in the control of cedar rust. 

 The use of Bordeaux is, however, out of the question on Black Twig, Ben Davis, 

 and other varieties susceptible to russet injury, at least for the first 6 weeks 

 after the tree blossoms. 



The spraying of trees, G. E. Stone {Massachusetts 8ta. Rpt. 1910, pt. 2, 

 pp. 4'^-52). — A brief popular discussion of the equipment necessary for the 



