938 Report on Crop PRopvucrioN oF THE 
was divided into ten plats, which were treated in accordance 
with the diagram shown below. 
ARRANGEMENTS OF PLATS IN 
; ONION FERTILIZER HXPERI- 
ment was continued for four years,  yrenrT. 
On the field where the experi- 
each plat received the treatment as 

° ° e 1. 
indicated each year of the entire No fertilizer. 
time, with the exception noted : 
under “ Fertilizers used.” 500 Ibs. fertilizer per acre. 
Z. 
aye) vtilivar 7a . 
FERTILIZERS USED. 10600 lbs. fertilizer per acre. 
ae 
The fertilizer was applied annu- : 
1s 1500 lbs. fertilizer per acre. 

ally. For three years it was com- 
pounded in accordance with the j 2900 Ins. medi ited per acre. 
formula for some time so popular : 
with Long Island farmers, viz.: No ferblices 
i: 
500 Ibs. fertilizer per acre. 
four per ct. nitrogen, eight per ct. 
phosphoric acid andten per ct. 
potash. In 1901 the potash was 8 
changed to five per et. 1000 lbs. fertilizer per acre. 
Crimson clover was sown on the ad Qe 
: 1500 Ibs. fertilizer per acre. 
Purdy field in August of 1900, : 
which grew to a’ height of from 10. 
cae) i 2000 Ibs. fertilizer per acre. 
four to six inches and was plowed wii ol i 
under the very last of November. With this exception the fer- 
tilizer was the only means employed of adding fertility to the 
land, other than the usual cultivation. In 1901 no fertilizer was 
applied to plats 6 to 10 of the Purdy field. 

LOCATION AND CONDITIONS OF THE EXPERIMENTS. 
The location of the experiments was at Florida, Orange county, 
N. Y.,a region where onion growing is an important industry. 
The soil is the kind so highly regarded by onion growers, being 
black, peaty and friable, with a water table about two feet below 
the surface, except in the time of a severe drought. Such soil 
appears to allow the continuous production of the same crop 
without the appearance of the unfavorable conditions which 
