144 EXPERIMENTS UPON LEGUMINOUS CROPS 



which it has deteriorated but Httle since. The hicerne, how- 

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

 thouu'h the crop on the plots following lucerne has been falling 



Table \A\.— Wheat following Leguminous Croi^s, Hoos Field. Produce 

 and Nitrogen per acre per annum, 1899-1903. 



year by year, in 1903 it ^vas 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. 



III. — The Continuous Growth of Clover on rich 



Garden Soil. 

 In 1854, after it seemed clear that clover would not continue 

 to grow on the arable land, it was sown in a garden only a few 



