SPRAYING THE APPLE AND RESULTS OBTAINED IN 1913 5 3 



(leaux 

 S6.25. 



-50. Percentage spray injury, 2.7. Sound fruit, 



Plat: II. 



All four sprays of lime sulphur, 1 1/2 — 2 — 50. Percentage of 

 spray injury 6.03. Percentage sound fruit, 83.25. 



At Nemaha where the rainfall was- almost normal and dis- 

 tributed over the whole season bordeaux produced some burning, 

 more than the lime sulphur solution. 



(1). 4 pounds blue vitriol, 6 pounds stone lime, 2 pounds 

 arsenate of lead and water to make 50 gallons. 



(2). IVz gallons lime sulphur solution 2 pounds arsenate of 

 lead and water to make 5 gallons 



Sprays at Wymore. 



Plat: I. 



Percentage of spray injury 7.82. Percentage of sound fruit 

 77.12. 



Plat: II. 



Percentage of spray injury 1.59. Percentage of sound fruit 

 87.88. 



In all cases, windfalls as well as sound fruit were considered. 

 The windfall fruit in all cases showed about double the amount 

 of insect injury shown by the picked fruit. 



The varieties, Geneton, Ingram and IMissouri Pippin are the 

 least susceptible of our common apples to bordeaux injury. Tha 

 Geneton is our most susceptible variety to apple scab, and the Mis- 

 souri Pippin to apple blotch. This being ilie case, and since bor- 

 deaux mixture offers the best control for these diseases, bordeaux 

 is preferable to lime sulphur for the above named varieties. How- 

 ever, since these varieties comprise a very small percentage of our 

 apple crop, the material best adapted to the more extensively grown 

 varieties, is recommended. 



Under ordinary Nebraska conditions, bordeaux should be used 

 for the first spray, and lime sulphur for the subsequent sprays. 

 In case apple blotch is serious, a spray of bordeaux mixture should be 

 applied four or five weeks after the petals fall. Should the summer 

 be hot and dry as was the case over the greater portion of the state 

 during the past season, bordeaux should be substituted for lime 

 sulphur, for the last application if a fungicide is used. 



There seems to be a direct correlation between the age of the 



