8 LIME-SULPHUR MIXTURES FOR SUMMER SPRAYING. 
cold water was added to stop the cooking as soon as the violent boiling . 
ceased, no injury resulted from its use on peach foliage. Further 
tests showed that the mixture could be just as effectively made with 
cold water, provided the lime was good, and when so made there was 
less danger of bringing an injurious amount of sulphur into solution. 
Mixtures prepared as outlined above were used on the Elberta 
and the Red River peaches in Georgia, on the Elberta in Arkansas, 
and on the Elberta, the Carman, the Waddell, and the Picquet’s 
Late varieties in [lhnois without injury to the foliage of the trees 
treated. | 
PEACH SCAB AND BROWN-ROT EXPERIMENTS. 
EXPERIMENT IN GEORGIA. 
A block of Red River peaches in the orchard of Mr. S. H. Rumph, 
at Marshallville, Ga., was chosen for an experiment in the control 
of peach scab or black-spot (Cladosporium carpophilum Thiim.) and 
brown-rot (Sclerotinia fructigena (Pers.) Schrét.). The orchard was 
about 8 years old, and in recent years the fruit had been so badly 
injured by both scab and brown-rot that Mr. Rumph declared his 
intention to dig up the trees and dispense with this variety entirely. 
Plots of 20 trees each were sprayed on April 14, May 8, and May 
18 with self-boiled lime-sulphur mixture made of 15 pounds of lime 
and 10 pounds of sulphur to 50 gallons of water, and a check plot 
of the same number of trees was left untreated. The first spraying 
date was about a month after the petals had fallen, and the last 
about three weeks before the bulk of the fruit was picked. 
Hot water was used in preparing the mixture for plot 1 and cold 
water for plot 18. Ineach case the mixture was diluted immediately 
after the lime had finished slaking, so as to arrest the cooking. 
The hot-water mixture slightly scorched some of the leaves around 
the margin but not to any injurious extent, and the cold-water 
mixture caused no scorching whatever. 
From June 1 to June 15 the crop of 5 average trees in each plot, 
including the check plot, was picked and sorted for brown-rot and scab. 
The results are shown in the following table: 
TaBLe I.—Results of experiments for the control of peach scab and brown-rot, Marshall- 
ville, Ga., 1908. 
Peaches 
: Peaches 
Plot. Treatment. | essere ences badly 
brown-rot.. scabbed, 
=e | | 
| Percent. | Percent. Per cent. 
1 | Lime-sulphur mixture (15-10-50), hot water.......-.-.------ | 10. 56 | 20.75 0. 80 
18 | Lime-sulphur mixture (15-10-50), cold water.....-........-- 12522, 16. 60 . 62 
308) ;Check——no treatments 22-25-02 a ee ee eee 36. 98 _ 93. 63 42.12 
[Cir. 27] 
