TWO YEARS' WORK IN SPRAYING AND SUG- 

 GESTIONS TO THOSE WHO CONTEM- 

 PLATE SPRAYING; REMEDIES FOR 

 PESTS OF THE ORCHARD AND GARDEN. 



Bordeaux Mixture plus arsenate of lead comes as near being 

 a "cure-all" as we can expect in any single compound. One need 

 not expect absolute immunity the first year of the treatment, espe- 

 cially after a number of years of neglect in this regard, but intelli- 

 gent and faithful spraying for two or more seasons will certainly 

 bring excellent results in the majority of cases. 



In this connection the reader is asked to examine the article on 

 spraying for the Pkim Curculio, p. 83, which represents careful in- 

 vestigations in 1907 and 1908, and striking results. 



Primarily this work was intended to demonstrate the value of 

 spraying to the horticulturist and nurseryman, and at the same time we 

 have been making a comparison between the merits of liquid and dust 

 sprays. The accompanying picture, Fig. 27, is a most convincing 

 proof of the value of spraying fruit, and Fig. 28 shows what may be 

 accomplished by judicious spraying of a tree which is naturally so 

 diseased as to be almost worthless. 



Two experiments conducted by this department on the Station 

 grounds in 1907 may be taken as further proof of the efficacy of spray- 

 ing. A block of plum trees was sprayed for the Plum Curculio, six 

 pounds of arsenate of lead in every hundred gallons of water being 

 the arsenical agent employed. On trees sprayed twice with this solu- 

 tion sixty-two per cent of the plums were marketable, and on trees 

 sprayed three times, seventy-seven per cent of the plums were 

 fit for market, while on the check or unsprayed trees only fifty-three 

 per cent were worthy of being offered for sale. 



Another convincing argument is ofifered by our experiment in the 

 Station apple orchard, where liquid Bordeaux and Paris green was 

 used, resulting in the treated trees giving us eighty-one per cent of 

 marketable apples, compared with thirty-six per cent marketable fruit 



