236 



STATE BOARD OP AGRICULTURE. 



TABLE B— EFFECT OF FERTILIZER ON YIELD OF POT.\TOES. 



For many years celery growers in Micliijiaii have secured inaimre from 

 the larger cities for niaiiitaiiiiiig tlie fertility of their innck soils. With 

 increase in freight rates and decrease in supply of niannre, a greater 

 ainonnt of commercial fertilizer is being nsed. 



Fertilizer exi)eriments with celery on muck have given practically the 

 same results as were secured with general crops in so far as kinds of fer- 

 tilizers are concerned. The need of nitrate may be more general for this 

 crop. 



Table C gives the yields from a re^jresentative field, the net returns 

 per acre being calculated. During the present season eight celery projects 

 are being carried on, with special attention given to the rate of ajiplica- 

 tion of the various fertilizers. Two similar projects are being conducted 

 with onions. 



TABLE C— EFFECTS OF FERTILIZERS ON YIELDS OF CELERY ON MUCK. 



Returns from celery calculated at 80 cents per case. 



N — Nitrate of soda. 

 P — Ac id phosphate. 

 K — Muriate of potash. 

 — no fertilizer. 



Fertilization studies on mint have indicated the need of potash for 

 increase in yield of oil. Of the two sulphate of potash has given some- 



