■62 NEBRASKA STATE HORTICULTURAL SOCIETY. 



unsprayed tree had 78 per cent of scab, one sprayed early in 

 May, 40 per cent, one sprayed late in May, 20 per cent, and an- 

 other sprayed both early and late in May, only 4 per cent. 



Tlie failure of the early spraying to give valuable results this 

 year may not mean that early spraying can safely be omitted 

 other seasons. Scab was rather slow in starting last spring, 

 which may account for the poorer results from early than from 

 late spraping. 



INJURY FROM SPRAYING. 



Some of the apples, notably Jonathan, were injured consider- 

 •ably by the spraying of May 23. The fruit was badly russeted 

 on one side. In the worst cases the injury took the form of one- 

 sided development of the fruits. Whether the injury was due 

 to an overdose of the spray, to improperly made Bordeaux, to 

 the green arsenoid used with the Bordeaux, or to the extreme 

 tenderness of the Jonathan fruits, it is impossible to say. Color 

 is lent to the latter supposition by the fact that Maiden Blush, 

 Ralls Genet, and Oldenburg, sprayed the same day and with 

 exactly the same spray mixture, were injured very slightly, 

 scarcely being russeted at all. 



The marked effect which spraying has in lessening scab is 

 shovm more clearly by photographs than by columns of figures 

 in tables. Figs. 7 and 8 are from photographs of sprayed and 

 unsprayed apples shown as a part of the spraying exhibit made 

 by the Experiment Station at the Nebraska State Fair of 1904. 

 The difference between the sprayed and unsprayed trees shown 

 at the Fair was so marked that some skeptical persons sug- 

 gested that the poorest of the unsprayed fruit and the best of 

 the sprayed fruit had been chosen. As a matter of fact, how- 

 ever, the exhibit was a i)erfectly fair one and showed the actual 

 average condition of the fruit on sprayed and unsprayed trees. 

 The specimens were taken at random, the only selection allowed 

 being the throwing out of the smallest fruits from each lot. As 

 a matter of fact, the difference between the sprayed and un- 

 sprayed fruit in the Experiment Station exhibit at the Fair was 

 but little greater than the difference between the exhibits of the 

 ^several orchardists who showed fruit for premiums. Except 



