VI. WHEAT ALTEENATED WITH FALLOW, IN HOOSFIELD. 

 1. The Field Eesults. 



From 1851 up to the present time, 1891, one acre has 

 been devoted in Hoosfield to the growth of wheat in 

 alternation with fallow without any manure. This year, 

 1891, is, therefore, the 41st season of the experiment. 

 In the first year the whole acre was fallow, in the second 

 wheat, in the third fallow, and in the fourth wheat ; in 

 the fifth half fallow and half wheat, and this plan has 

 been followed ever since, that is, the crop and the fallow 

 have been alternated on the respective halves each 

 year. 



A summary of the crop results is annually given in 

 the " Memoranda" and they are there compared with 

 those obtained in the growth of wheat year after year 

 on the same land, without manure, in the immediately 

 adjoining Broadbalk field. 



There is only 1 sample of grain and 1 of straw taken 

 each year, and no reduction in the sampling, or in the 

 drying and burning, is recommended ; but " mixed-year " 

 (instead of individual year) samples, may be made for 

 nitrogen determinations. 



2. The Soils of the Wheat-Fallow Plot. 



Independently of the interest of the crop results as 

 such, the fact that the alternate wheat and fallow plot 

 is immediately adjoining the Leguminous crop plots in 

 the same field, and that from the commencement of the 

 experiments with clover on the Leguminous crop plots 

 the two sets of experiments, the one with a Gramineous 

 crop, and the other with Leguminous crops, have pro- 

 ceeded side by side for almost exactly the same period 

 of time, gives to the soil history of the alternate wheat 

 and fallow plot an especial interest. This point has 

 been referred to already when speaking of the Legumi- 

 nous crop plots, and, as intimated, the soils of the two 

 sets of plots have generally been sampled at the same 



