Etherton Orchard Experiment, 1911 

 Orchard I (Average Original Infestation, 5.84) 



At the first glance, it would seem that suspended sediments in 

 the home-made lime-sulphur were disadvantageous to it, the treat- 

 ment of plot 4 with a clear solution giving a higher gain than that 

 of plot 3 with a solution whose sediments were thoroly stirred up 

 just before spraying. Since it so happened, however, that the origi- 

 nal infestation of plot 4 (3.33 degrees) was only a little more than 

 half that of plot 3 (6 degrees), it is altogether likely that this was 

 the cause of the greater benefit to plot 4. 



Obvious differences may be noted in the results of the treatment 

 with the several kinds of lime-sulphur tested, the Thomsen and the 

 Sherwin-Williams' preparations of 1911 being apparently in a differ- 

 ent class from the Rex, the Grasselli, and the home-made preparations. 



Comparing the data of this table with those for 1907 and 1908, 

 we find fairly similar results so far as the experiments themselves 

 are fairly comparable. Scalecide, for example, gave us 28.8 percent 

 of gain in Orchard I in 1907, and 26.5 percent in 1911. Rex lime- 



