New York AGRICULTURAL EXPERIMENT STATION. 151 
that the factor of fogs and dews may play a more important part 
in the distribution of the rust than soil conditions. 
The results obtained in 1898-99 show conclusively, not only 
in appearance of the sprayed and unsprayed belts, but also in 
the yield, that spraying not only protected the asparagus from 
the rust but in addition was a source of profit. Nevertheless, the 
fact that the area used as a basis was small, allowing factors of 
error to be exaggerated, lessens the value of these results as a 
whole. Hence conclusions as to the value of spraying should not 
be based upon these alone. The resin-Bordeaux adhered fairly 
well and did not injure the asparagus in the least, although the 
1-to-8 formula: was used in preparing the mixture. 
Observation brought out the fact that only the growth made 
previous to the appearance of the rust on a field was protected 
by spraying; that is, a growth that was mature and thoroughly 
sprayed previous to the attacks of the rust. This observation 
applies only to the field where every other row was a source of 
infection. Furthermore it was observed that generally two and 
sometimes three periods of growth occur in Long Island aspara- 
gus beds, and for two seasons, 1899 and 1900, we have been 
unable to save these late growths on the test field. Hence the 
indications are that, even with spraying, the vitality of the 
sprayed rows on this field will be gradually reduced. 
As already stated the resin-Bordeaux mixture caused no ap- 
parent injury to the asparagus. In fact no noticeable injury has 
resulted from the use of the resin-Bordeaux mixture, used as 
strong as 1 to 8 during three seasons. 
It was found necessary to use between 250 and 300 gallons of 
the mixture per acre at each spraying when applied with a barrel 
pump. In addition it was ascertained that with an ordinary 
barrel pump with two leads of hose three men could not prepare 
the mixture and spray over three acres per day. 
Thus far the results show that under the most unfavorable 
conditions a gain in yield of nearly 50 per ct. can be obtained. by 
spraying, while under more favorable conditions a gain of nearly 
70 per ct. in yield can result from spraying. Expressing the 
