The Wob^irn Field Experiments, 1911. 1597 



The highest yield, that from nitrate of soda, was only 4*2 

 bushels niore, namely, 20*4 bushels, this plot also giving the 

 most straw. 



The mixture of nitrate of lime and cyanamide, half and half, 

 gave an increase of 2*4 bushels, and the mixing of the two 

 materials was distinctly satisfactory, as thereby some of the 

 inconveniences attaching to the use of either of the materials 

 separately were avoided. Undoubtedly, the exceptional cha- 

 racter of the year prevented the top-dressings from acting to 

 anything like their full extent, and the results can only be 

 taken as " comparative." 



The quality of the corn was about average except where 

 nitrate of soda and nitrate of lime had been used, it being then 

 slightly inferior. Between the others there was nothing to 

 choose. 



Green-Manuring Experiments, 1911. 



(«). Lansome Field. 



In Lansome Field, the old system of growing green crops 

 and ploughing them in was continued. After the wheat of 

 1910 had been removed, an attempt was made to take trifolium 

 in place of rape, but the crop was put in rather late, and did 

 not come to anything much, so that it had to be ploughed up, 

 and, in the end, the usual three green crops, tares, rape, and 

 mustard were grown. Tares and rape were drilled in on 

 May 5, 1911, and mustard on May 20, mineral manures (super- 

 phosphate and sulphate of potash) being again applied to the 

 upper plots of the series. The mustard crop was ploughed 

 in on July 8, the other two on July 13. Second crops were 

 drilled on August 14, but, in consequence of the very dry 

 weather, they never came up really well, and were ploughe<l in 

 on September 28, wheat being subsequently (h'illed as the crop 

 for 1912. 



(6). New Experiments. Series (A). Stackyard Field. 



In the experiments just recorded (Lansome Field), the green 

 crops of tares, rape, and mustard had always been ploughed in. 

 It was felt that it would be of interest to see whether the same 

 results would be ol)tained with the green crops when fed off by 

 sheep, as when ploughed in green. Accordingly, in the new 

 experiment, this modification was made. An attempt was 

 made, as in Lansome Field, to grow trifolium, but it was not 

 successful, and, as in the other case, green crops of tares, rape, 

 and mustard were grown over the 4 acres of Stackyard Field 

 which had previously been devoted to Rotation I. of the earlier 

 series of experiments. 



