The Wohurn Field Expenments, 1912. 303 



was again very marked, the further application of 2 tons per 

 acre to plot 2b restoring the plot to a considerable extent, as 

 was also the case with 5b, 8aa, and 8bb. 



The comparison of 10a and 11a confirmed the indication of 

 last year that potash is more needed for barley than phosphate. 

 Farmyard manure (plot lib) gave a better return than rape 

 dust (plot 10b), and the crop was the second highest of the 

 series, though it did not produce the exceptional crop of 1911, 

 when the season was so very dry. It is remarkal)le, however, 

 that in 1912 the results of the application of farmyard manure 

 on wheat and barley respectively were so very different, wheat 

 being a comparatively poor crop and barley a good one. 



The corn was valued as usual, and the figures are appended. 

 They are, however, of little use, for all the samples were 

 inferior barleys for an ordinary season, and most of them 

 were very " smutty " as well. 



Rotation Experiments. — The Unexhausted Manurial 

 Value of Cake and Corn (Stackyabd Field). 



(a) Series C. 1910, Sivedes, fed on by Sheep with Cahe and 

 Corn respectively ; 1911, Barley ; 1912, Green Crops. 



The barley of 1911 was, as mentioned in last year's Report, 

 better by 5 bushels of corn and 3^ cwt. of straw per acre after 

 the corn-feeding (oats and barley) than after the cake-feeding 

 (linseed and cotton). After the barley was cut, early red 

 trifolium seed was drilled on August 23, 1911. It came up 

 nicely, looked well through the winter, and was cut for hay 

 on June 6, 1912. Rnin then came, and the hay could not be 

 carted until June 19-20, when it was weighed, giving the 

 results set out in Talile III. 



Table III. — Series C. Rotation Experiments — the Unex- 

 hausted Manurial Value of Cake and Corn. {Stackyard 

 Field.) 1912, Trifolium — after Barley, following Swedes, 

 fed on : — 



Plot 



Produce of Trifolium Hay per acre 



Cake-fed plot 

 Corn-fed Plot 



Thus, the corn-feeding continued to show, in 1912, a slight 

 superiority over cake-feeding. It was intended to grow a 

 second green crop — rape — and to feed it on before putting 

 in wheat. The land was ploughed after the trifolium — 



