230 Report oF THE HorTICULTURAL DEPARTMENT OF THE 
ing for scab and moth, and speak of injury. We used 4-4 bordeaux, or 
eight pounds of each, lime and bluestone, to 1oo-gallon tank.”— L. F. HEn- 
DERSON, Entomologist and Plant Pathologist, Idaho Station, Moscow, Idaho. 
“Tn reply to your inquiry of November 16th concerning spray injury in 
Iowa following the use of the bordeaux mixture will say that I have observed 
some of this injury to apples in this state but have never known it to be so 
serious. We have received no complaints from Iowa fruit growers as to 
injury of this kind. Possibly this may be due in part to the fact that the 
practice of spraying is not as general here as it is among New York 
orchardists, but I have the impression that both foliage and fruit of orchard 
trees are less liable to spray injury in Iowa than they are in New York.”— 
S. A. BeAcu, Horticulturist, Iowa Station, Ames, Iowa. 
“During the past season there was much of the so-called ‘spray injury’ 
in our orchards at Manchester. This was particularly noticeable upon the 
Baldwins. As to the formula which works this injury, I may say that both 
the 5-5-50 formula and a 3-5-50 formula resulted in a decided russeting of 
the fruit. Since in making this mixture, we used prepared or hydrated lime, 
it has occurred to me that possibly the amount of lime used was insufficient; 
although it seems to me that with 5 pounds of lime to 3 pounds of copper 
sulphate such a condition would hardly exist. The usual formula employed 
in this State is the one which the Station has recommended for several 
years; this is the 5-5-50 for the bordeaux, adding about 1 pound to 2 pounds 
arsenate of lead to the 50 gallons of water.”—W. W. Munson, Pomologist, 
Maine Station, Orono, Maine. 
“The ‘spray injury’ of the apple has been quite common during the past 
year. Certain varieties of apples, notably the Jonathan, Ben Davis, Baldwin 
and Grimes, have been injured quite seriously. I have seen the injury in the 
orchards of some of our best orchardists. The fruit in our College orchard 
was more or less affected. There can be no doubt but that the spray was 
properly made and applied in the right manner, nevertheless, the injury 
occurred. The formula used in these cases is, 4 pounds bluestone, 6 pounds 
lime, % pound paris green. I do not think the injury is caused entirely by 
the spray. I have seen it where no spraying was done. But spraying may 
aggravate it.’— S. W. Frietcuer, Associate Horticulturist, Michigan Station, 
Agricultural College, Mich. 
“T think it safe to say that injury has occurred in every orchard in 
South Missouri (I am unacquainted with conditions in North Missouri) in 
which bordeaux mixture has been used, regardless of whether it be the 
successful or unsticcessful orchardist. As a rule the injury has not been 
serious since 1901. I am of the opinion that the strength of the mixture 
has little to do with injury to apples. It appears to be more a question of 
climatic or rather weather conditions, rainy weather following the applica- 
tions being almost certain to produce some injury, especially to foliage. In 
some seasons, however, which are comparatively dry, the injury is apparently 
as bad as in wet seasons. The 4-4-50 or the 5-5-50 formulas are the ones 
mostly in use. It is difficult to say which has preference. We are inclined 
now to recommend the 5-5-50. From an experimental standpoint I can give 
you nothing, as what occurs one year is contradicted the next. Our experi- 
ments have been with different strengths of mixtures and.thus far we have | 
noticed but little if any difference.’— F. W. Faurot, Assistant in Plant Dis- 
eases, Missouri State Fruit Experiment Station, Mountain Grove, Mo. 
