16 THE CONTROL OF APPLE BITTER-ROT. 
which were carried out by Mr. J. W. Beach, of Batavia, Ark. Sul- 
phuret of potassium was the fungicide used, and the results reported 
were somewhat encouraging. In 1889 Galloway also directed a series 
of experiments on the treatment of this disease in Virginia. Potas- 
sium sulphid and ammoniacal copper carbonate were used, and Mr. 
George G. Curtis,” who did the spraying, reported good results from 
both. 
The investigations thus begun were soon followed with remedial 
experiments by several experiment stations workers, notably Alwood,? 
Garman,’ Stinson,” and Whitten,’ all of whom reported favorable 
though not entirely satisfactory results from spraying with copper 
compounds. 
Since the severe outbreak of 1900, efforts to control this disease 
have been continued with renewed interest, and several papers report- 
ing results of remedial experiments have been published. In 1901 
Quaintance,’ in writing of experiments conducted in Georgia the pre- 
ceding vear, stated that ‘- the results are much in favor of four appli- 
cations of Bordeaux, not only in quantity of fruit but in size and 
appearance, and, as developed later, in keeping quality.” Some of 
the best results that have come to the writer’s attention are those 
reported by Stinson in 1901.7 One plot sprayed five times gave ‘*59 
per cent of the fruit free from bitter-rot,” another sprayed four times 
gave “78 per cent of the fruit free from bitter-rot,” while one check 
plot had only ‘‘1.6 per cent of the fruit free from bitter-rot” and 
another ‘*14 per cent of the fruit free from bitter-rot.” In 1902” the 
same writer published the results of another series of experiments 
showing beneficial results from spraying. 
Asa result of their investigation in 1902, Burrill and Blair’ recom- 
mended a systematic search for and removal of the diseased fruits and 
infecting cankers or mummies, stating that ** the canker and infested 
fruit should be removed, taking care not to distribute the infection in 
«Curtis, George G. Treatment of Bitter-Rot of the Apple. Bul. 11, Section of 
Vegetable Pathology, U. 8. Dept. of Agriculture, 1890, pp. 38-41. 
6 Alwood, William B. Bitter-Rot. Bul. 17, Va. Agr. Exp. Sta., 1892, pp. 61-62 
and 64-65. Also Ripe-Rot, or Bitter-Rot of Apple. Bul. 40, Va. Agr. Exp. Sta., 
1894, pp. 59-82. 
¢Garman, H. Bul. 44, Ky. Agr. Exp. Sta., 1898, pp. 3-24. 
@Stinson, John T. Bitter-Rot. Bul. 26, Ark. Agr. Exp. Sta., 1894, pp. 33-34. 
éWhitten, J. C. The Bitter-Rot. Bul. 31, Mo. Agr. Exp. Sta., 1895, pp. 3-4 
and 7-15. 
J Quaintance, A. L. Bitter-Rot of Apples. Thirteenth Annual Report, Ga. Exp. 
Sta., pp. 360-361 and Pl. IX. 
gStinson, John T. Preliminary Report on Bitter-Rot or Ripe-Rot of Apples. Bul. 
1, Mo. State Fruit Exp. Sta., pp 3-21. 
AStinson, John T. Notes on Spraying for Bitter-Rot. Bul. 2, Mo. State Fruit 
Exp. Sta., pp. 3-20. 
‘Bul. 77, Ill. Agr. Exp. Sta., p. 366. 
