244 EXPERIMENT STATION EECORD. 



Lime-sulphur wash for apple scab, li. K. Beattie ( ll't's^ Fruit-Grower, 

 20 (190!)). No. i, pp. 6, 7). — Au aceoiuit is given of spraying experiments con- 

 ducted in 1907 with Bordeaux mixture and in 190S in •which Bordeaux mixture 

 and lime-sulphur wash were compared. 



In 1908 a maximum of ?> sprayings was given as a ])reventive of scab, and the 

 lime-sulphur wash was found to excel the Bordeaux mixture under the condi- 

 tions of the expei'iments. On the basis of one year's investigations, the author 

 recommends for the prevention of apple scab the use of a lime-sulphur wash 

 composed of sulphur 1 lb., linie i lb., and water 5 gal. The number and dates 

 of sprayings necessary are yet to be definitely determined. 



Fighting apple scab in the Middle West, W. M. Scott ( West. Fruit-Grower, 

 20 ilOOH), A'o. i, pp. 5. 6", figs. 7). — A somewhat popular account is given of in- 

 vestigati(ms which have been carried on by the Bureau of Plant Industry of 

 this Department either as demonstration experiments or in connection with 

 some of the stations in the Middle West. These have been conducted with a 

 view to combating apple scab, leaf si)ot, and codling moth. 



The results obtained in Arkansas and Nebraska in 1908 were quite favorable 

 to the use of a 5 : 5 : 50 Bordeaux mixture. Two brands of factory-boiled or 

 concentrated lime-sulphur solution were tested and found to adhere better and 

 remain effective longer than the self-boiled mixture, but owing to the interfer- 

 ence of frost and excessive rains the experiments were not satisfactory and the 

 results are not considered conclusive. In the experiments for the prevention 

 of peach diseases scab, black spot, and brown rot were held under control by 

 the lime-sulphur spray, and on varieties of apples subject to Bordeaux injury 

 this spray is recommended. 



Spraying for brown rot of the peach, 1908, C. A. McCue (Delaware Sta. 

 Bui. 85, pp. 3-12). — During 1908 the author carried on a series of cooperative 

 spraying experiments with different varieties of peaches to test the self-boiled 

 lime-sulphur wash as a fungicide for the prevention of brown rot of the iieach, 

 due to tielerotinia fructigoia. Comparisons were also made of a number of 

 other fungicides. 



As a result of one year's experiments with self-boiled lime-sulphur mixture, 

 it appears that brown rot can be materially lessened by 3 or 4 sprayings, but 

 that under some conditions considerable injury is done to the peach foliage. 

 This may be prevented to a large degree by preparing the wash with cold in- 

 stead of hot water. One of the principal objections to the use of this mixture 

 is a heavy deposit of lime upon the fruit, and on this account the treatment can 

 not be considered a success. 



The mixture proved an excellent remedy for the prevention of peach scab, and 

 the author believes that 2 sprayings, one about May 10 and the other about June 

 1, would prove sufficient for ordinary attacks of the scab in the region where the 

 experiments were carried on. 



The other mixtures experimented with were the liex brand of lime sulphur, 

 benzoate Bordeaux, a boiled lime-sulphur mixture, sulphur water, and a strong 

 homemade lime-sulphur wash. None of these proved safe and reliable reme- 

 dies for the prevention of the brown rot of the peach. The commercial lime: 

 sulphur washes are somewhat promising, but their action on the peach foliage 

 is not sufficiently understood as yet to warrant giving definite directions for 

 their use. 



Hypochnose of pomaceous fruits, F. L. Stevens and J. G. Hall (Ann. 

 MycoL, 7 (1909), No. 1, pp. .'/9-59, figs. 8). — A description is given of a disease 

 of pomaceous fruits due to Hypochnus ochroleucus. 



This fungus causes a leaf blight, and its effect on the host plant resembles in 

 some respects that of the bacterial fire blight of pears and apples. The later 



