596 NEW JERSEY STATE AGRICULTURAL. 



that the appHcations of the former were very effective while those 

 of the latter were ineffective. The addition of lime changed re- 

 sults somewhat. 



Experiment 3 — Potassium sulphide i pound; lime, 5 pounds; 

 water, 5 gallons; prepared as already written (p. 588). 



June 1 8th, sprayed trees 6, 7 and 8, Reeves Favorite, 6 being 

 covered throughout, while 7 and 8 were sprayed so as to avoid 

 hitting foliage more than absolutely necessary, while reaching aH 

 of last year's and older wood. The trees were all badly infested, 

 scale ready to reproduce, but no young actually on the move. The 

 material combined readily, was yellowish in color when applied, 

 and left an almost white coating on the tree when dry. June 

 iQth and 20th, the trees appeared as if coated with whitewash, 

 and it seemed as if the lime was in excess for best results. There 

 was no appearance of injury to foliage; but the material seemed 

 to exercise a drying-out effect. 



July 3rd, a part of the lime coating had been washed away; 

 there was a little defoliation and the scale covering was ver/ dry, 

 partly uplifted, exposing the generally dark and watery-looking 

 insects beneath. There were very few larvae or recent sets ; but 

 more on trees 7 and 8 than on 6; probably due to the difference 

 in the methods of application. 



July i6th, the trees were much alike as to scale infestation, all 

 with a general scattering of larvae and recent sets and a sprinkling 

 of older specimens. On tree 6 the foliage was a little ragged, 

 evidently as the result of the treatment, while on the others there 

 was no appearance of harm. On the 30th, there was little change 

 in condition of either tree or scales. August 1 3th there appeared 

 TO be a decided improvement in scale conditions. There were 

 very few larvae or recent sets, while of the earlier settings by far 

 the'larger part was dead and dry. But this seemed to mark the 

 limit oi effectiveness because, from that point the scale took a 

 new start and, on September 6th, larvae and new sets were so 

 abundant that the trees were re-sprayed with the "Con. Sol", i 

 part, to water 40 parts, and became part of the general orchard. 



In its beneficial effect this was about equal to the simple solu- 

 tion of Potassium sulphide, the addition of the lime serving to 

 prevent injury to foliage. 



Experiment 8 — Potassium sulphide, i pound; lime, 2 pounds; 

 water, 5 gallons; preparetl as^ before. The difference between 

 this and the previous mixture is in the amount of lime. It was 

 applied July ist. by Messrs. Marsh and Dickerson, to trees 200 to 

 249 inclusive, taking in all the varieties in the orchard. At that 



