144 EXPEKIMENTS UPON LEGUMINOUS CROPS 



which followed was generally more than 40 bushels per acre 

 with 2 tons of straw. But this residue was rapidly exhausted ; 

 the succeeding crop was very poor, and fell to a point from 

 which it has deteriorated but little since. The lucerne, how- 

 ever, left behind a much larger and more enduring residue ; and 

 though the crop on the plots following lucerne has been falling 



TABLE LIV. Wheat following Leguminous Crops, Hoos Field. Produce 

 and Nitrogen per acre per annum, 1899-1903. 



year by year, in 1903 it was still much greater than on 

 the other plots. Per contra, after the first year, the crop 

 on the plots following peas or beans has always been a 

 little below that of the other plots. Of the other plots, the 

 crops on those following white and red clover have been a 

 little better than those following sainfoin, Bokhara clover, or 

 vetches. 



In 1904 the land was sown with oats and seeded afresh 

 with leguminous plants in plots which run at right angles to 

 the old plots. 



