Experiment by Louis Kain, Owendale, Mich. 



O. No fertilizer, yield 13.2 KPN. Complete fertilizer PN. Fertilized with Nitro- 

 tons; test 14.7 per cent. with 10 percent potash, gen and Phosphoric Acid 

 200 pounds per acre, yield 

 1 8. 6 tons test 179 per- 

 cent. 



The crates contain the yield from 2^ square rods of each plat. In this experi- 

 ment one dollar spent for potash returned thirty-nine dollars and forty-two cents. 



but no potash; 16.9 tons; 

 test 16.0 per cent. 



The actual plant food in a ton of this goods would be 

 obtained by mixing 1 ,000 pounds of 14 per cent acid phos- 

 phate, 400 pounds sulphate of potash, and 300 pounds of 



dried blood. Instead of blood, 200 pounds of sulphate of am- 



18 



