4<i ON GREEN CROPS AS A MANURE. 



bushels per acre. The previous crop on the same 

 piece in 1837, did not average quite. 6 bushels per 

 acre. 



You will perceive that the whole extra expense of 

 this experiment, is one ploughing and one harrow- 

 ing, and 1 bushel of buckwheat per acre, which would 

 cost about three dollars and a half per acre, and the 

 extra produce 14 bushels per acre. 



Although this crop is not large compared with oth- 

 er crops upon rich land, yet for land of this poor 

 quality, I consider it very large. Nor is this all. 

 This crop was not obtained by extra expense, to force 

 the land to yield more than it could continue to pro- 

 duce, it is only the first of a series of crops, which if 

 continued by the same management, undoubtedly 

 will, in a few years, double its fertility, instead of ex- 

 hausting it ; and especially if the stubble is ploughed 

 in soon after the crop is harvested, for this with the 

 weeds amongst it, will furnish a third green crop, and 

 the scattering grain which would otherwise be lost, 

 will then grow and very materially increase the first 

 green crop the ensuing season. 



You will allow me to remark that experience and 

 close observation upon the management of green 

 crops, have convinced me that three things, among 

 others which may be more obvious, are essential to 

 a successful result. First, it is absolutely necessary 

 that the plough used is of good construction. Sec- 

 ond, that some method be devised to prostrate the 

 crop before the plough, or it will not be covered. I 

 use a wooden roller about four inches in diameter, 

 and 16 inches long, fixed on the end of the plough 



