62 Nebraska Agricultural Exp. Station, Research Bui. 10 
Injury from russeting gradually diminishes as the apples become 
larger, altho there is always more or less danger in employing 
this fungicide even late in the season. When the mixture is 
properly made, the injury from Bordeaux compared with the 
advantages of its use, in combating blotch, is so small that 
in badly infected orchards it is recommended for the 3-weeks 
spray and subsequent applications. 
For this purpose the 3-4-50 formula is recommended, tho if a 
good grade of fresh stone lime is used (not air-slacked or hydrated 
lime) the 3-3-50 formula is equally good. During dry weather the 
4-4-50 formula has given good results but is not so safe when 
used during wet weather. 
The indications are that three weeks after the petals fall is 
soon enough for the first spray for blotch, and in orchards no more 
badly infected than were those in which the records were made, 
i.e., 12 per cent to 45 per cent, this spray, followed by another 
application of fungicide when spraying for the second brood of 
codling moth, is usually sufficient. In orchards more heavily 
infected, no doubt another application of Bordeaux, 15 to 20 
days after the 3-weeks spray, would prove very beneficial. 
CEDAR RUST ON APPLES 
During the three seasons just past, sufficient data could not 
be secured to warrant any statements by the writer on methods 
of controlling this disease. The comparatively dry seasons pre- 
ceding these experiments probably did not offer the best con- 
ditions for the advancement of the disease. A report published 
Fig. 12 — Cedar rust on fruit 
