82 



August 31st and September 1st, and threshed just before 

 Christmas. 



The unmanured produce was only 1.7 bushels of corn with 

 3 c. 1 qr. 14 lb. of straw, etc., per acre. Sulphate of ammonia 

 by itself, or with minerals and no lime, as usual, gave no crop, 

 but with lime gave marked increases, going up to a yield of 

 13.9 bushels per acre (plot 8aa). Nitrate of soda did not, on the 

 whole, do as well as sulphate of ammonia with lime, the highest 

 yield with it being 13 bushels (plot 6). 



The heavier dressings of nitrate of soda had no advantage 

 over 'the lighter ones, nor did the use of lime on the nitrate plots 

 produce any benefit. 



The results for both years are given on page 81. 



3. Rotation Experiments. 



The Unexhausted Manure Value of Cake and Corn 



(Stackyard Field). 



1923. Barley. 

 (a) Series C 



As the swede crop of 1922 was quite small, mangels were 

 carted on to augment the root supply. The sheep were on from 

 December 20th, 1922, to February 7th, 1923. They consumed, 

 on the corn plot (2 acres) 22 cwt. of oats and 10 cwt. of barley, 

 equivalent to 29.25 lb. nitrogen per acre; on the cake plot 

 (2 acres) 7 cwt. of linseed cake, 6 cwt. decorticated cotton meal 

 and 14 cwt. 42 lb. of undecorticated cotton cake, equivalent to 

 67 lb. nitrogen per acre. 



"Plumage Archer" barley, at the rate of 2\ bushels per 

 acre, was drilled on March 28th, and a clover mixture — Red 

 Clover 7 lb., Alsike 3 lb., Trefoil 3 lb. per acre — (red clover 

 alone having been taken four years previously) was sown in the 

 barley on May 1st, 1923. The barley grew fairly well in spite of 

 the unfavourable season. The crop was cut on August 16th. 



1924. Clover. 



The clover grew well in 1924, promising an excellent crop. 

 This was cut and gathered on June 27th — 30th, 1924. The second 

 growth was small and was ploughed in. 



The results were : — 



Neither in the barley crop of 1923 nor in the succeeding 

 clover of 1921 has there been anything to show the value of the 

 richer cake-feeding as against that of corn. This result is 



