88 



The lime and chalk were spread in January, 1919, and the 

 land ploughed. 



The crops were: — 1919, barley; 1920, swedes; 1921, barley; 

 1922, tares followed by mustard; 1923, oats. The ordinary 

 course of cultivation, manuring, etc., was followed over the whole 

 area, the only difference being in the application of lime or of 

 chalk. 



It would naturally take some time for the lime and chalk to 

 distribute themselves fairly over the soil ; for the first few years 

 there was little beyond the general indication that lime produced 

 rather the better crop; this was the case with the swedes of 1920 

 and the barley of 1921 ; the tares of 1922 and subsequent mustard 

 crop were fed off by sheep and not weighed. Black Winter oats 

 followed as the crop of 1923, and were drilled on October 31st at 

 the rate of 4 bushels per acre. The crop was cut August 2nd-3rd, 

 stacked August 16th, and threshed November 12th and 13th, 1923. 



The harvest results were as follows : — 



These results, taken as a whole, run very consistently, and 

 point to what had been previously noticed, viz., that the lime 

 series gave better crops than the chalk. Adding up the chalk 

 series, a total of 141.8 bushels of corn is shown as against 163.7 

 bushels with the lime series. The duplicate unlimed plots are 

 in very fair agreement. The lime series shows a more or less 

 regular increase as more lime is added, up to 4 tons per acre, 

 which latter amount would appear to be too much. With the 

 chalk plots there is a similar, though not so marked, increase. 

 The increase from lime is equally marked in the straw as in the 

 corn. 



It is worthy of remark that the exact duplicate of these 

 observations is to be found in the pot-culture experiments on the 

 s.mie subject (see page 94). 



Examining the stubble after harvest, it was noticed that, as 

 the quantity of lime or chalk was increased, so the spurry became 

 less and less prominent, and its absence was more marked on the 

 limed plots. 



