New York Agricultural Experiment Station. 233 



boing present. Tlie main question at issue in this work lias 

 been the effect of commercial fertilizers and stable manure upon 

 the manufacturing value of the beets, with especial reference 

 to the possibility of depressing the quality of beets by growing 

 them on land to which stable manure has been freshly applied. 

 A determination of the percentages of sugar and of the 

 coefficients of purity has been the means of judging of the 

 quality of the beets grown. No determination has been made 

 of the character of the non-sugars present in the juice. If beets 

 may be standardized as to quality by the proportion of sugar 

 in them, together with the coefficient of purity, then the conclu- 

 sions to be drawn from the data herewith presented are plainly 

 indicated. Attention is directed to the figures of the preceding 

 tables but more especially to the general summary in Table 

 XTX. 



Table XIX. — General SuinfARY of Results Showixg the Influence of 

 Manuke Upon the Quality op Sugar Beets, 1898-1901. 



No manure. Commercial fertilizer. Stable manure. 



Sugar Sugar Coef- Sugar Sugar Coef- Sugar Sugar Coef- 



ja in fleipntof iii in ficlent of in in flcient ot 



Tear grown. beets, juice, purity, beets, juice, purity. beets. juice, purity. 



Per ct. Per ct. Per ct. Per ct. Per ct. Per ct. 



1898, station. 15.2 85.2 15 85.4 17.2 86.5 



1898, Dawley 15.6 81.6 15 79.4 15.9 80.8 



1899 14.8 16.2 84.2 15.6 17.9 86.1 



1900 14.2 15.6 8.3.6 15.2 16.6 84.7 



1901 13.1 17.1 82.9 13.9 18.6 85.7 13.3 16.7 79 



The data here presented are strikingly opposed to what is 

 regarded as the orthodox method of manuring sugar beet land. 

 It so happens that, with the exception of the crop of 1001, not 

 only does the stable manure fail to depress the quality of the 

 beets, but the crops grown where it was applied in the spring 

 show a higher percentage of sugar than where commercial ferti- 

 lizer was used or where no manure was applied. In 1901 the 

 percentage of sugar was but little lower but the coefficient of 

 purity appeared to drop. In this case the stable manure was 

 used in an excessive quantity. 



