48 - BOARD OF AGRICULTURE. 



POTATOES. 



The average proportion between tops and tubers has been 

 found to be three hundred and sixty pounds of the former to 

 one hundred bushels of the latter, and to produce that mass 

 more than the natural product of the land, I use, — 



Nitrogen, . 21 lbs., in form of sulph. ammonia, 24 per cent., 105 lbs. 

 Potash, , . 34 " " of sulph. potash, 32 " 235 " 



Phosphoric acid, 11 " " of superphos., 13per ct. sol. acid, 85 " 



HAY. 



This formula is an average of my formulas for red clover, 

 white clover, English hay and timothy. To produce one 

 ton of hay per acre more than the natural product of the land, 

 I use, — 



Nitrogen, . 36 lbs., in form of siili^h. ammonia, 24 per cent., 180 lbs. 

 Potash, . . 31 " "of mm-iate potash, 80 " 70 " 



Phosphoric acid, 12 " " of suiierj^hos., 13 perct. sol. acid, 95 " 



RYE STRAW, 



In producing the straw of winter rye as a market crop, and 

 without the growth of grain, and to produce two tons per 

 acre more than the natural yield of the land, I use, — 



Nitrogen, . 10 lbs., in form of sulph. ammonia, 24 per cent., 50 lbs. 

 Potash, . . 31 " " of muriate potash, 80 " 62 " 



Phosphoric acid, 8 " " of sujierphos., 13 per ct. sol. acid, 64 " 



WINTER RYE. 



The natural proportion between the straw, roots, leaves, 

 etc., and the grain, is two thousand three hundred pounds of 

 the former to twenty bushels of the latter, and to produce 

 this mass per acre more than the natural yield of the land, 

 I use, — 



Nitrogen, . 25 lbs., in form of sulph. ammonia, 24 per cent., 125 !bs. 

 Potash, . . 24 " " of muriate potash, 80 " 48 " 



Phosphoric acid, 16 " " of superphos., 13 per ct. sol. acid, 128 " 



Mr. GoODALE. I think every one here would be extremely 

 glad to hear from Dr. Nichols upon this interesting subject. 



