STATE POMOLOGICAL SOCIETY. 



99 



Table — Showing Results of Experiments. 



DEDUCTIONS. 



The ainmoniacal copper carbonate gave excellent results, tLough 

 all the solutions proved beneficial. The yield in pounds was increased 

 by all, but most by the copper compounds. The greatest difference 

 between the perfect fruit on sprayed and unsprayed trees (Prof. 

 •Goff's experiments) was 51.68 per cent, and the least 6.7 per cent. 

 In Prof. Taft's experiments the greatest difference was 56 3 per 

 cent, the least 5.1 per cent. The results were practically the same. 

 The 3'ield was nearly three times as great where copper compounds 

 were used as on the unsprayed trees. 



APPLE POWDERY MILDEW — PODOSPH^RA OXYCANTHvK. (d, C.) DcBy. 



This is a minute fungus which spreads itself ov^r ihe surface of 

 the plant and b}' means of suckers, sent into the cells of ih ■ leaves 

 or stems of the host, obtains its nourishment. It covers the plant 

 with a powdery, meal-like growth, hence the name. During the 

 summer the greyish, cobweb-like threads extend themselves over the 

 plant and throw out powder}' tufts, composed of chains of oblong 

 bodies, the summer spores (conidia). These drop and spread the 



