The Wohurn Field Experiments, 1911. H93 



did either 2b, already referred to, or even 2bb, upon which the 

 dressing of 2 tons of lime per acre had been repeated in 1905. 



The crop was cut on August 10, and then carted, being 

 ultimately threshed on November 15. The results are given 

 in Table II., page 391. 



If the wheat crop suffered through the exceptional season, 

 the barley did very much more so, and, indeed, there has 

 hardly ever been so poor a crop obtained in the course of the 

 experiments. One of the two unmanured plots gave 3*8 

 bushels, the duplicate, for some unexplained reason, yielding 

 only 1*4 bushels. 



Mineral manures (plot 4), in spite of the prevalence of 

 weeds, gave rather more, namely, 7*5 bushels. 



The sulphate of ammonia plots, when this was used alone, 

 gave, as stated, no crop whatever, but plot 2aa, where as little 

 as 15 cwt. per acre of lime had in all been applied, produced 

 5'5 bushels, as against 3"6 and 2'3 bushels on plots 2b and 

 2bb, where 2 tons and 4 tons respectively of lime had been 

 previously applied. The failure of plot 2bb is, indeed, remark- 

 able, and the fact that this falling off has been noted alike in 

 the wheat and in the barley is a matter calling for investi- 

 gation, seeing how very successful was the application in the 

 first instance of 2 tons of lime. 



With the nitrate of soda plots, the heavier dressing (plot 3a) 

 gave double the crop that the lighter dressing did, but both 

 crops were miseral^ly small, and it will lie further noticed that, 

 as in the case of the wheat, the addition of mineral manures 

 to nitrate of soda gave practically no increase. As between the 

 omission of potash or that of phosphates (plots 10a and 11a), 

 there would seem to be evidence, as in the case of the wheat, 

 of the need of potash on this land. Rape dust (plot 10b) 

 did little good, but the one redeeming feature was the farmyard 

 manure plot (lib), which gave a crop far in advance of any 

 of the others. This amounted to 26*7 bushels per acre. No 

 other one was near it, the next highest result being 7*5 bushels. 



The valuation of the corn, carried out as usual, showed 

 the barleys to ])e very inferior. Not a single sample reached 

 the general basis of 36.s. per quarter of 448 lbs. for the year, 

 and several, including the nitrate of soda plots, fell as 

 low as 30.S. The grain was not merely small, but the colour 

 was uneven, and there were many unripened grains, so that 

 little would have gone for malting purposes. 



Rotation Experiments, 1911. 

 (a) Rotation IV. 1911, Wheat—after Mustard. 

 As mentioned in last year's report, the Rotation Experi- 

 ments, so far as the upper-half of the area devoted to them in 



