
375859 
B. P. 1.—552. 
THE SUBSTITUTION OF LIME-SULPHUR PREPARA- 
TIONS FOR BORDEAUX MIXTURE IN THE 
RE ENE OF APPLE DISEASES. 
INTRODUCTION. 
In recent years Bordeaux mixture has come into ill favor among 
the apple growers on account of its injurious effect upon the fruit 
and foliage ef certain varieties, and there is a growing demand fora 
reliable fungicide which can be used for the control of apple diseases 
without producing such injury. Bordeaux mixture is undoubtedly 
the best all-around fungicide known, and it is unfortunate that the 
apple growers have to consider the possibility of giving it up; but 
the russeting of the fruit and the burning of the foliage caused by it 
are so objectionable that it seems highly desirable, if not necessary, 
to adopt a less injurious fungicide even at the risk of a partial sacri- 
fice of efficiency in the control of diseases. The subject of Bordeaux 
injury has recently been admirably discussed by Prof. U. P. Hedrick, 
of New York, and by Prof. C. S. Crandall,* of Lllinois, and will be 
considered Se incidentally in this paper. 
During the past three years the writer has been orn on the 
problem of securing a satisfactory substitute for Bordeaux mixture 
and not without some success. The self-boiled lime-sulphur wash 
which was developed primarily for spraying peach trees has been 
found to be an excellent spray for the control of mild cases of apple 
diseases and to be entirely harmless to fruit and foliage. The con- 
centrated lime-sulphur solutions, both commercial and home pre- 
pared, when diluted to contain about 4 pounds of sulphur to 50 gal- 
« Acknowledgment is hereby made of the hearty cooperation and assistance given 
the writer of this paper in his investigations by the Strathmore Orchard Company, of 
Mount Jackson, Va., and the Elm Springs Orchard Company, of Fishersville, Va., 
and also by Messrs. M. F. Gilkerson, of Staunton, Va., and W. S. Ballard, of Crozet, 
Va., in whose orchards the experiments and demonstrations were conducted.—G. H. 
PowELL, Acting Chief of Bureau. 
> Bulletin 287, New York (Geneva) Agricultural Experiment Station. 1908. 
¢ Bulletin 135, Illinois Agricultural Experiment Station. 1909. 
[Cir. 54] 3 
