52 



EXPERIMBHTAL FARMS. 



EXPERIMENTS WITH FERTILIZERS ON HALF PLOTS (5>5TH ACRE) OF POTATOES 



AFTER WHEAT, 



o 



s 



o 

 d 



7 



8 



9 

 10 



11 



12 

 13 

 14 



16 

 16 

 17 

 18 

 19 

 20 

 21 



Fertilizers applied each Year. 



Barn-yard manure (mixed horse and cow manure) well rotted, 



12 tons per acre in 1888 ; 15 tons per acre each year since .... 

 Barn-yard manure (mixed horse and cow manure) fresh, 12 tons 



per acre in 1888 ; 15 tons per acre each year since 



Unmanured 



Mineral phosphate, untreated, finely ground, 500 lbs. per acre.. 

 Mineral phosphate, untreated, finely g^oimd, 500 lbs.; nitrate 



of soda, 200 lbs. per acre 



Bam-yard manure, partly rotted and actively fermenting, 6 



tons per acre ; mineral phosphate, untreated, finely ground, 



500 lbs. per acre, composted together, intimately mixed and 



allowed to heat for several days before using 



Mineral phosphate, untreated, finely ground, 500 lbs.; nitrate 



of soda, 200 lbs.; wood ashes, unleached, 1,000 lbs. per acre. . 

 Mineral phosphate, untreated, finely ground, 500 lbs.; wood 



ashes, unleached, 1,500 lbs. per acre 



Mineral superphosphate. No. 1, 500 lbs. per acre. 



Mineral superphosphate, No. 1, 350 lbs.; nitrate of soda, 200 



lbs. per acre .... 



Mineral superphosphate. No. 1, 350 lbs.; nitrate of soda, 200 



lbs. ; wood ashes, unleached, 1,500 lbs. per acre 



Unmanured 



Bone, finely ground, 500 lbs. per acre 



Bone, finely ground, 500 lbs.; wood ashes, unleached, 1,500 lbs. 



per acre ... 



Nitrate of soda, 200 lbs. per acre 



Muriate of potash, 150 lbs. per acre 



Sulphate of ammonia, 300 lbs. per acre 



Sulphate of iron, 60 lbs. per acre 



Common salt (Sodium chloride), 300 lbs. per acre 



Land plaster or gypsum (Calcium sulphate), 300 lbs. per acre.. . 

 Unmanured in 1889, mineral superphosphate, No. 2, 500 lbs. 



per acre each year since 



West Half of Plots. 



Total 



Yield per 



Acre. 



Bush. Lbs. 



244 10 



248 30 



102 20 



96 50 



113 30 



215 50 



163 50 



127 30 



104 30 



145 20 



209 50 



98 40 



108 50 



150 30 



111 10 



128 40 

 81 50 



105 00 

 101 00 



112 50 



118 50 



