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STATE HORTICULTURAL SOCIETY. 



cent was culls. On the unsprajed block of 63 trees there was a total 

 yield of 92 bushels of fruit, of which 54.6 per cent was merchantable 

 and 46.4 per cent was culls, a gain in merchantable fruit due to the 

 treatment of 31.6 per cent. 



EXPERIMENTS IN WEST VIRGINIA, 1910. 



In order to demonstrate the control of peach scab and to determine 

 how much spraying is required on late varieties, an experiment was 

 conducted in the orchard of L. P. Miller & Bros., at Okonoko, W. Va., 

 during 1910. There are about 600 acres of 12-year-old trees in this or- 

 chard, and it is composed of a large number of varieties beginning with 

 Southern Early and ending with Bilyeu. Until sumnner spraying was 

 undertaken in 1908 the peach scab had been most disastrous to the 

 crops in this orchard, about one-half of the fruit being lost every year. 

 Spraying, however, largely overcame the trouble, and in 1910 the loss 

 was comparatively small, notwithstanding the difficulty of thoroughly 

 spraying such a large orchard at the proper time. 



The spraying experiments Avere confined to the Elbertas, Salway, and 

 liilyeu, and about 500 trees each of these varieties were used. The Bil- 

 yeu set a good crop, while the crop of Elberta and Salway was only 

 medium to light, but ample for an experiment. For the most jiart the 

 weather was unfavorable for good work. During the time the first and 

 second applications were being made it was cloudy and showery and the 

 day following the second application it rained rather hard all day. The 

 Elberta trees were syn'ayed according to the following plan : 



Plat 1.^ — Self-boiled lime-sulphur and arsenate of lead, one month after 

 petals fell. May 11. 



Plat 2. — Self-boiled lime-sulphur with arsenate of lead, one month 

 after petals fell, and self-boiled lime-sulphur alone, one month later, 

 May 11 and June 15. 



Plat 3. — Self-boiled lime-sulphur, one month after petals fell and one 

 month later, INIay 11 and June 15. 



Plat 5. — Self-boiled lime-sulifhur six weeks after petals fell and one 

 month later. May 26 and June 28. 



Plat 6. — Commercial lime-sulphur, 1 to 100 with arsenate of lead and 

 lime, one month after petals fell, and with lime only one month later. 



Plat 0.— Check ; untreated. 



At picking timie, August 22 to 26, the crop, including windfalls, from 

 four trees in each sprayed plat and six unsprayed trees was siorted to 

 determine the percentage of fruit affected with scab and the percentage 

 of merchantable fruit. The results are shown in Table VII. 



TABLE VII. — Results of treatment for peach scab on the Elberta variety, Okonoko, W. Va.. 



1910. 



