618 NEW JERSEY AGRICULTURAL COLLEGE 



Marsh, Howell and Dickerson orchards are in Morris county, and are 

 mostly peach. The Barton orchards are in Burlington county, and 

 are mostly peach and some apple. In addition, several other orchards, 

 mostly apple, were treated in various parts of the State at varying 

 times and under varying conditions. 



The experience obtained in the past and a close watch on the de- 

 velopments of the present season made it possible to explain almost 

 every bad and everv' good effect that was obtained. 



The records of the Experiment Orchard and of the applications in 

 the Marsh peach orchard are detailed in the report for 1904. It re- 

 mains to add that in both cases the work was nearly perfect. The 

 details as to the Experiment Orchard for the present year are given 

 elsewhere in this report. In the Marsh orchard, on the trees that were 

 twice sprayed before they became dormant, scarcely a live scale had 

 been seen up to late August, and those that had been sprayed once 

 only were almost as good. The single spraying was made just before 

 a heavy rain, and it may be that this exerted some influence. 



In the latter part of March some 900 trees, mainly peach, but also 

 some apple and pear, were sprayed in the Dickerson and Howell 

 orchards, near Chester, most of them with "Kill-0- Scale," but some, 

 also, with "Anti-Scale,'' or its precursor. This lot of material had 

 been exposed to a very Ioav temperature, and one barrel of "Kill-0- 

 Scale" had become partly separated, so that there was some free oil in 

 the mixture. That this influenced the result was shown in the July 

 examination, in which it appears that a slight scattering of scale 

 remained throughout the orchard, but nowhere enough to make sum- 

 mer treatment really necessary. 



In the Howell orchard the trees were perhaps a little the worse 

 infested, but these were spra3'ed last, with fresh material, which had 

 not been exposed to frost, and which mixed without a trace of free oil 

 at the surface. Here the results are almost as good as in the Marsh 

 orchard, though the original infestation was not nearly so bad. In 

 any event, there were nearly 1,000 peach trees treated in late October 

 or late March, and no appearance on any of injury to trees or fruit 

 set, while the scale was as nearly wiped out as any single application 

 can ever hope to accomplish it. 



Five barrels of diluted inixture were used in a neighboring orchard 

 of apple and pear trees, in comparison with lime, sulphur and salt, 

 and in midsummer the oil proved to have been much the most 

 effective. 



