DR. DAUBENY ON THE ROTATION OF CROPS, ETC. 



203 



Clover. 



Years. 



10 



40 



30 



20 



10 



0. 



Ubs. 



1 1 . Avena sativa. 



My trials with oats continued only for six years, and on ground already drawn 

 upon by four crops since the period at which manure had been applied ; the plot 

 selected for the permanent crop having borne successively flax, beans, turnips, and 

 hemp ; that on which the corresponding crop in 1839 was raised, parsley, mint, and 

 clover. 



The produce therefore of the first year was in both cases moderate, and nearly 

 uniform, but subsequently there was a greater diminution in the permanent than in 

 the shifting crop, as will appear from the following Table : — 



Year. 



Permanent crop. 



Shifting crop. 



1839. 



1840. 



1841. 



1842. 



1843. 



1844. 



No. 20. 

 31-0 



44-0 

 31-7 

 22-5 

 24-4 

 14-6 



After Trifolium pratense. 

 37*5 



After Trifolium pratense. 

 49-0 



After Beta vulgaris. 

 53-0 



After Trifolium pratense 



28-5 



Average of six years . 

 Maximum in one year 

 Minimum in one year 



28-0 

 44-0 

 14-6 



After Polygonum fagopyrum. 

 24-4 



After Helianthus annuus. 

 14'7 



After Vicia sativa. 

 28-3 



Average of six years . . . 32*4 

 Maximum in one year . . 49*0 

 Minimum in one year . . 14*7 



MDCCCXLV. 



2 E 



