New York AGRICULTURAL EXPERIMENT STATION. A451 
of purity. In the Station experiments the coefficient of purity 
was little affected; in the Fayetteville experiments, the co- 
efficient of purity was lowered by using fertilizers. 
TABULATED SUMMARY SHOWING EFFECT OF FERTILIZERS UPON COEFFICIENT OF 


PoRITY. 
Number Coefficient of purity. 
Fertilizer used per acre. of experi- — —-—— ~~ s 
ments. Lowest. Highest. Average. 
Lbs. 
Co cosh i a AS a ara 3 81.6 85.2 83.9 
RO cine ds cia: diets /y of'e''si'e.s' <8) 93 a 4 ok 86.0 $2.1 
IES Ga SR te ae en ee aa 4 78.3 85.4 82.1 
Re Eh foals. Voc 9.) «oie noe wees = are 4 79.7 85.8 82.5 
RMR a pisos vey os 6k, s isle. 9 ui ie ice» oe « 2 85.6 87.1 86.3 


(4) Effect of fertilizers on cost of crop.— 'The use of 500 
pounds of fertilizer increased the cost of beets $6.50 an acre; 
1,000 pounds, $18 an acre; 1,500 pounds, $19.50 an acre; and 
2,000 pounds, $26 an acre. 
(5) Effect of fertilizers upon money value of crop.— Averag- 
ing our results we find that the use of 500 pounds of commercial 
fertilizer increased the yield of beets enough to pay for the fer- 
tilizer used and leave $4.65 over. With larger amounts of fertili- 
zer there was less profit, and: above 1,000 pounds there was an 
actual loss. : 
TABULATED SUMMARY SHOWING EFFECT OF FERTILIZERS UPON MoNEY VALUE 






oF CROP. 
SOOO ——$<—<——< 
Value of beets per acre. 
Fertilizer used per ee A. 
Profit 
Lowest. Highest. Average. Increase. fromuseof 
fertilizer. 
Lbs. 
SAUTER SAR TOU i S40 SO 1 sats weles oto eames 
1!) 50 76 64 46 56 98 $11 16 $4 66 
Mee rs alc gels vos 57 52 63. 95 60 33 14 51 1 51 
RRR ote vars fel ec's ome 56 58 66 31 62 32 16 50 *3 00 
MMT Pet Oo coe 10d sin lefd a's r. 52 42 66 20 59 31 13 49 bat PAGED 

* Loss. 
