40 SPRAYING IN NURSERY AND ORCHARD. 



when there is some dew on the foliage, hut good results can 

 be obtained most any time on a still day, or even when there 

 is a gentle breeze. 



"On a perfectly still day it will not inconvenience the work- 

 men or horses for the reason that the machine blows the dust 

 away from the operator, that is to say, they are behind the 

 gun, and it is not one-fourth as disagreeable as handling liquid, 

 Bordeaux. If a little dust should settle on them, it can easily 

 be brushed off. If it falls on the horses, it does them no harm. 

 As a rule there is always a perceptible breeze and of course we 

 spray to the windward. As for thoroness of the work and 

 the results obtainerl, the easy method of applying the dust and 

 for time occupied, the liquid Bordeaux is not in it with double 

 strength dust formula and in my opinion the dust formula can 

 be purchased as cheaply as one can properly make it and thus 

 avoid the disagreeable feature of mixing it up." 



The above two experiments were planned for a comparison 

 between dust and liquid spraying. Unfortunately there is no 

 good basis for comparison, and, as intimated at the beginning 

 of this article, we need more time and more careful detailed 

 work before giving conclusive report. From personal obser- 

 vation we are of the opinion that both methods, if intelligently 

 and faithfully followed, give good results. 



Fig. 15 illustrates a high cart used for spraying nursery 

 trees in a larg"e nursery in Southern Minnesota. It is modeled 

 somewhat on the lines of the nursery sprayer constructed by 

 this department some years ago and figured in an Annual Re- 

 port. In this cart, however, as can be seen from the photo- 

 graph, the axle is so constructed that the wheels can be shifted 

 to accommodate different widths between rows. One defect, 

 which can be easily remedied, is the small size of the recepta- 

 cle, which obliges the outfit to return to the base of supplies too 

 frequently, thereby losing time. The owner of this cart writes 

 that wdiile no detailed account was made of the effect of the 

 season's spraying, he did not hesitate to say that the results 

 were good and that no nurseryman could afford to raise trees 

 without spraying. 



Fig. 17 shows a liand apparatus, which we find very useful, 

 and which can be advantageously employed in any small gar- 



