22 FARMERS’ BULLETIN 650. 
TABLE II.—Results of lime-sulphur sprays in preventing marking of fruit by the San 
Jose scale. 
araiier Number | Total | Percent- 
Est Treatments.1 Variety. of apples | f @Pples | number | age of un- 
0. infested, | 20% of infested 
‘| infested. | apples. | apples. 
1 | Commercial lime sulphur, 14 to | Rhode Island Green- 137 1, 606 1, 743 92.13 
50; sprayed May 12, 25, June ing. 
14, July 25. 
ON \ hBare do ad ae BeBe Ree RRS eae ye See ale Bald wintaee... <= .c2-26 80 778 858 90. 67 
3 | Home boiled lime sulphur, May | Greening...........- 79 3, 939 4,018 98. 03 
12, 25, June 14, July 25. 
4 jk eo dO etaen sce ceeem ease’ a. Bald winteee seas. c= 37 1,813 1, 850 98. 00 
5 | Commercial lime sulphur, 1} to |..-.- dO... Fee ese neneane 13 298 311 95. 81 
50; May 12, 25, June 14, July 25. 
6 | Bordeaux mixture (3-4- 50), May | Greening.............. 843 1, 055 1, 898 55e58 
12, 25, June 14, July 25. 
7 fe bees dotlot. hss een ee Bald winSeee- - 22245258 525 500 1, 025 48.78 
Sul MUmsprayedes. se. -peee eee Greenin geen... eee 796 805 1,601 50.28 
OuieReee (6 (ca Re Paredes cit Aer. One Bald wintSee- + sca 809 190 999 19. 01 
1 All treatments had 2 pounds of arsenate of lead to each 50 gallons of spray, except in case of plat 5, which 
had the poison in the application of May 12 only. 
Summer spraying of peach trees and other stone fruits for the scale 
may also be desirable because of ineffective work during the dormant 
period of the trees. Under such circumstances the self-boiled lime- 
sulphur mixture should be used, since the foliage of the peach will not 
stand the diluted lime-sulphur mixture previously indicated for the 
apple, pear, etc. This self-boiled lime-sulphur wash is made up 
according to quite a different formula from any of the washes hereto- 
fore mentioned, and has come into general use as a fungicide for the 
control of peach scab and brown-rot.'| Orchardists spraying for these 
troubles on peaches and other stone fruits may at the same time 
accomplish much in preventing the increase of the scale by thoroughly 
coating the limbs and branches of the trees while making the applica- 
tions to the foliage and fruit for the control of the fungous troubles 
mentioned. The self-boiled lime-sulphur wash may be made as 
follows 
Stone lime... .... eee -.-..... ee See. 2 SE pounds... 8 
Sulphur (flour or flowers): .. -...... SE -pe sc beset ee dou 35 Aas 
Wateritowmakes -2>etees.-.... 2... SoBe ee ee ee gallons.. 50 
The lime should be placed in a barrel and enough water poured on 
almost to cover it. As soon as the lime begins to slake the sulphur 
should be added, after first running it through a sieve to break up the 
lumps. The mixture should be stirred constantly and more water 
added as needed to form a thick paste at first and then gradually a 
thin paste. The lime will supply enough heat to boil the mixture 
several minutes. As soon as it is well slaked water should be added 
to cool the mixture and prevent further cooking. It is then ready to 
be strained into the spray tank, diluted, and applied. 
1 Scott, W. M., and Quaintance, A. L. Spraying peaches for the control of brown-rot,scab and curculio, 
U.S. Dept. Agr., Farmers’ Bul. 440, 40 p, 14 figs. 1911, 
