284 



STATE BOARD OF AGRiICULTURE. 



2. Celery. ,Wliile celeiy has been grown on a commercial scale on 

 Michigan mucks for over forty years, little commercial fertilizer has 

 been used on that and other truck crops until comiparatively recently. 



Truck farmers have been largely dependent on manure shipped in 

 from the cities, principally Chicago. With decrease in supply of manure 

 and increase in freight rates, the cost of fertilizing muck with manure 

 has made the practice very expensive. In turning to commercial fertil- 

 izers, truck growers have been largely without information as to the 

 kind of fertilizer or fertilizers to apply or the rate of application to 

 make. To obtain infonnation as to the fertilizers needed, co-operative 

 experiments were conducted with several celery growers during the past 

 year. The results obtained from one of them are presented in Table 3. 



TABLE NO. 1— GENERAL CROPS ON MUCK SOIL— GRAHAM FARM— LUM, MICHIGAN. 



Fertilizer treatment. 



Yield 

 per acre. 



Gross 



value 



per acre. 



Cost of 

 fertilizer 

 per acre. 



Net 



return 



per acre. 



Increase or 



decrease 



over 



unfertilized 



muck with 



cost of 



fertilizer 



deducted. 



Potatoes (1). 



Sugar Beets (3). 



(1) Calculated at 75 cents per bushel. 



(2) Manure valued at $2.00 per ton. 



(3) Calculated at $6.00 per ton. 



