93 



(b) Lansome Field Soil. 



Much the same comparative observations as just recorded 

 were made in this series, the crops being, however, as stated, 

 slightly superior to the Stackyard Field soil ones. 



After threshing in November, the following comparative re- 

 sults were obtained : — 



Green-manuring Experiment — Wheat after green crops, 1923. 



These results are most consistent and point clearly to the benefit 

 resulting from the use of lime. This is the case with both soils 

 and with both green crops. Superphosphate and sulphate of 

 potash, on the other hand, produced no benefit in either, and the 

 advantage obtained in the mixed dressing was clearly due to the 

 lime. 



Taking the actual crop returns and not those stated in the 

 Table (given in percentages of the untreated produce), there was 

 no very marked difference between the tares soil and the mustard 

 soil. The actual weights for the untreated and limed pots were : — 



In pot-culture work, too much importance must not be 

 attached to actual crop-weighings, and the above results must be 

 taken purely as an indication, but a very clear one, as to the 

 benefit likely to accrue from liming both lands and both sets of 

 plots. Whether doing this will result in bringing out in practice 

 differences between the two green crops, remains to be seen ; but. 

 acting upon the above results, it was determined to lime one half 

 of each of the plots in Stackyard Field and Lansome Field in the 

 winter of 1923, lime being put on at the rate of 2 tons per acre, 

 the other halves being left unlimed. 



