28 SPRAYING PEACHES, ~ 
Plat 6, which was sprayed with commercial lime-sulphur solution, 
1 gallon to 100 gallons of water, had only 1.5 per cent of fruit badly 
affected with scab, although 49.3 per cent of it was affected more or 
less. These results indicate that the scab can be held in check by a 
very dilute solution of the lime-sulphur solution. It burned the 
foliage considerably and caused some of the leaves to drop, but the 
injury almost disappeared as the season advanced and the fruit 
matured in good condition. 
A similar test was made on the Salway variety, which ripens some 
four weeks later than the Elberta. There were four sprayed plats, 
consisting of about 80 trees each, and 17 trees were left untreated for 
the purpose of comparison. The self-boiled lime-sulphur (8—8—50) 
was used in each application, and arsenate of lead at the rate of 2 
pounds to each 50 gallons was added in the first application only. 
On September 22 and 23 the crop from four trees in each plat was 
sorted for scab and brown-rot, and the results are shown in Table 
VIII. In this case the classification of scabby fruit was made on a 
commercial basis; that is, the fruit having only a few small specks 
of scab, which did not materially detract from its market value, was 
not classed as scabby. The figures given in the table therefore 
represent the percentage of fruit so badly affected as to have but 
little value on the market. 
Tape VIII.—Results of spraying on the Salway variety in the Miller orchard, Okonoko, 
W. Va., 1910. 
| 
Plat eee aoc | Total | Seabby | Rotted 
No. SE SESTONS SL SU: fruits. | fruit. fruit. 
| 
8 | (1) One month after petals fell, May 12; (2) June 17; Number. | Per cent. | Per cent. 
(S)inly lds a co eesee nce ee eee see mee ee ees | 1,557 | 5.5 2.5 
9 | (1) One month after petals fell, May 12; (2) June 17...-.-... 1,599 | 5.3 129 
10 | (1) One month after petals fell, May 12.-.............-....-- 1,132 27.2 6.8 
11 | (1) Six weeks after petals fell, May 26; (2) June 28......-.. 1,065 5.8 tes: 
1th Check ot. Sprayed s..- aa ee ee te ree eter 2,349 | 87.5 37.6 
| 
It will be observed that the results from plat 8, which had three 
applications, are about the same as those from plat 9, which had two 
applications, the scab and brown-rot having been almost com- 
pletely controlled in both cases. The results of the treatment of plat 
9 are shown in figures 9 and 11. The superiority of two treatments 
over one may be seen by comparing plats 9 and 10. The latter 
received only one application and 27.2 per cent of the fruit became 
affected with scab, while only 5.3 per cent of the crop on plat 9 was 
affected. Plat 11 received the same treatment as plat 9, except 
that the applications on plat 11 were delayed two weeks, the object 
being to determine the best time to begin the spraying. In this 
case there was very little difference in the results from the two plats. 
440 
