own 



MANURES FOR SPECIAL CROPS. 



immediate supervision. Everything was done that was 



deemed necessary to secure accuracy. 



"The following table gives the results of the experiments: 



TABLE SHOWING THE RESULTS OF EXPERIMENTS ON INDIAN CORN. 



DESCRIPTION.! OF MANURE AND 

 QUANTITIES APPLIED PER ACRE. 



1. No manure 

 2. 100 Ibs. plaster (g. psum or sulphate of 

 lime) 



4. 



400 Ibs. unleached wood-ashes and 



100 Ibs. plaster (mixed) 



150 Ibs. sulphate of ammonia 



300 Ibs. superphosphate of lime 



6. 150 Ibs. sulphate of ammonia and 800 

 I Ibs superphosphate of lime (mixed) 



7. 400 Ibs. unleached wood ashes, (un- 



certain) ! 



8. 150 Ibs. sulphate of ammonia and 400 



Ibs. unleached wood-ashes (sown 

 I separately) 



9. 300 Ibs. superpho-phate of lime, 150 



Ibs. sulph. ammonia, and 400 Ibs. 

 unleached wood-ashes. . . 



400 Ibs. unleached wood-ashes. 



10. 



11. 100 Ibs. plaster. 400 Ibs. unleached 

 wood-ashes, 300 Ibs superphos- 

 phate of lime, and 200 Ibs. Peruvian 

 guano 



75 Ibs sulphate of ammonia 



200 Ibs. Peruvian g ano 



400 Ibs. unleached wood-ashes, 100 

 Ibs. plaster, and 500 Ibs. Peruvian 

 guano 



Ill 



67 



78 



78 

 105 

 78 



90 

 72 



97 

 108 



105 

 88 

 101 



125 



10 



25 





|b 



fiS 



u The superphosphate of lime was made on purpose for these 

 experiments, and was a pure mineral manure of superior quality, 

 mad3 from calcined bones ; it cost about 2 cents per pound. The 

 sulphate of ammonia was a good, commercial article, obtained 

 from London, at a cost of about seven cents per pound. The ashes 

 ware made from beech and hard maple (Acer S2ccharinum) wood, 

 and were sifted through a fine sieve before being weighed. The 

 guano was the best Peruvian, costing about three cents per pound. 

 It was crashed and sifted before using. In sowing the ashes 

 on plot 7, an error occurred in their application, and for the 

 purpose of checking the result, it was deemed advisable to repeat 

 the experiment on plot 10. 



" On plot 5, with 300 Ibs. of superphosphate of lime per acre, the 

 plants came up first, and exhibted a healthy, dark-green appear- 



