596 
Rotation of Crops. 
the two courses, there was a higher produce of roots on the plots 
where beans or clover were grown than on those that were fal- 
lowed ; a result doubtless due to the increased growth of the 
leguminous crop under the influence of the potash manuring, and 
SWEDISH TURNIPS. 
GROWN IN POUR-COURSE ROTATION, IN AGDELL FIELD. 
45th year, 1892 . First Crop, Twelfth Course. 
Unmanured continuously. 
Crop of roots, 1892 : 8J cwts. per acre. 
T 
Mineral Manure, commencing each Course. 
Crop of roots, 1892 : 11 tons, 6J cwts. per acre. 
Mineral and Nitrogenous Manure, commencing each Course. 
Crop'of roots, 1892 : 24 tons 18 cwts. per acre. 
to accumulation of nitrogen in the soil thereby. It may further 
be observed (though not shown in the Table) that in 1 892 — that is, 
the first year of the twelfth course — the produce of the manured 
plots was generally higher than in either of the two preceding 
courses. 
