76 RESULTS WITH OATS 



472 Ibs. of oats, per one cwt. of sulphate of ammonia. If 

 instead of Tartar Oats, the common oat, avena sativa, had 

 been grown, the return, as measured by bushels, would have 

 been distinctly less, owing to the higher weight per bushel of 

 the grain. 



2. Glasgow and West of Scotland Experiments. 

 Professor R. P. Wright has carried out, in connection with 

 the Glasgow and West of Scotland Technical College, very 

 numerous experiments on the growth of oats with various 

 manures. The trials have been made simultaneously on a con- 

 siderable number of farms, and have continued from 1893 to 

 the present time. Originally confined to farms in the south- 

 west of Scotland, the scheme has latterly included others in 

 central Scotland and Fifeshire. As the same quantities of 

 manure have been everywhere applied, and, for the most part, 

 the same quantities have been used every year, it is possible to 

 calculate average rates of produce having a really wide basis. 



It is evident that the experiments in question differ entirely 

 in their circumstances from those we have just mentioned. 

 The oat crop is now grow r n in its natural place in a rotation ; 

 the kinds and quantities of manure giving a profitable return 

 are consequently those which can be immediately copied in 

 farm practice. It must at the same time be recollected that 

 the average figures are derived from a large number of very 

 different results, and do not necessarily hold good for any 

 particular soil or climate. 



Oats are usually grown in Scotland after lea, that is after 

 ploughing up the land previously laid down for two years with 

 grass seeds and clover : this is the position usually occupied by 

 the oat crop in these experiments. A few of the oat crops 

 followed roots. When the land has previously been liberally 

 treated it may be advisable to give the oat crop no additional 

 manure ; but this is not of general occurrence, and the main 

 object of these experiments has been to show that small 

 dressings of artificial manure may be applied with profit in 

 the cultivation of oats on lea land. 



The standard application of nitrogenous manure in these 

 experiments was i cwt. of nitrate of soda per acre ; the 



