52 NEBRASKA STATE HORTICULTURAL SOCIETY 



At Nemaha where the rainfall was greater, lime sulphur solution 

 produced less spray burn during the latter applications than did 

 bordeaux mixture, though the bordeaux was more effective in the 

 control of apple scab and apple blotch. 



At Brownville, the spray machine did not arrive in time, for* 

 the cluster cup spray, and we were unable tQ obtain water for the 

 fouTth, so that only the second and third or the petal-fall or the 

 three-weeks-after spray were applied. For these two sprays bor- 

 deaux proved slightly more efficient than lime sulphur, but produced 

 very much more spray injury. 



In one of our orchards at Florence the apples were t.arvested 

 before a record could be secured. While in another near the same 

 place a hail storm occurred just before the aTH-'^J cation ot the fourth 

 spray, which did a great deal of damage to the fruit, and caused this 

 ppray to burn the fruit, much more severely than it would other- 

 wise have done. Making it impossible to secure accurate records. 

 The spray mixtures were applied in such a manner that Ave were 

 able to determine the relatives efficiency of each ingredient (bor^ 

 deaux, lime sulphur and arsenate of lead) at each application, so 

 that we were able to determine very accurately wiiicli spray was 

 giving the best results, or doing the most damage. 



In our experiments certain trees were marked for record, and 

 every apple examined. In all, one million, nine hundred and fifteen 

 tlious;u)d, five hundred and thirty four. (1.915,5;]-!) apples were 

 examaned for insect, fungus and spray injury, 



Bordeaux vs. Lime Sulphur. 



Bordeaux still bears out its old reputation, of being the most 

 effectiv^e fungicide we have, but it still has the same old propensities, 

 to "hurn" the fruit. Bordeaux has proved VAor-i effective as a fungi- 

 cide than lime sulphur, especially when appli scab and apple blotch 

 are present. At the same time bordeaux has caused more spray in- 

 jury than lime sulphur; under ordinary weather conditions except 

 for the first or cluster-cup spray. H'>\'''ever where tiui rainfall has 

 been llf. ht and the clear and hot "^'i^otiicr during the latter part of 

 tiie season, lime sulphur has produced niT.v^. and more serious burn- 

 ing than bordeaux mixture for the fourth application. 



At Wymore, the latter conditions prevailed and the following 

 results were secured: 



Plat: I. 



js*. spray bordeaux 4' — 6 — 2 — 50: 2nd, spray lime sulphur 1 '/i 

 — 2- -.7^0. 3rd, spray, lime sulphur IV, — 2 — 30, and 4th, spray bor- 



