SPRAYING PEACHES. 37 
self-boiled lime-sulphur wash improves the appearance of the fruit. 
Three or even two applications of the poison alone or in limewater, 
however, result in a very excessive reddening, especially on the 
side exposed to the sun, on which later may appear brown, sunken 
spots of variable size, accompanied with more or less extensive 
cracking of the skin. This condition of the fruit is shown in figure 13. 
The self-boiled lime-sulphur mixture when properly prepared 
according to directions does not injure the fruit or foliage, but if 
allowed to remain hot in concentrated form before dilution enough 
sulphur may go into solution to produce injury to the foliage. 
Users of this spray should therefore follow carefully the directions 
given for its preparation, bearing in mind that a good mechanical 
mixture of the sulphur 
and lime suspended in 
water and only slightly 
combined is desired 
rather than to dis- 
solve any considera- 
ble quantity of the 
sulphur. 
During the applica- 
tion of the spray, it is 
very important that 
the mixture be kept 
well agitated to insure 
its uniform distribu- 
tion. Asboth the self- 
boiled lime-sulphur 
wash and the arsenate 
of lead quickly settle 
when the spray is left 
undisturbed Ryn (ace Fic. 13.—Elberta peach sprayed three times with arsenate of lead, 
/ showing the browning and cracking effect of the poison. 
cessive amount may 
be applied to some trees, while others receive an insufficient quantity. 
While most spraying equipments are supplied with adequate agitating 
apparatus, the orchardist should assure himself that the spray is being 
properly stirred in the tank during its application. Under conditions 
of imperfect agitation and consequent settling, the ingredients of the 
spray may be applied so strong that serious injury will result. This 
has been observed to be the case, especially following the employment 
of compressed-air sprayers with inefficient agitators. 
COST OF TREATMENT. 
The cost of the combined treatment for the control of brown-rot, 
scab, and curculio is insignificant when compared with the resulting 
440 
