EFFECT OF SEASON rroN (^)rAMTV 8:. 



compared with Plots 4 results in a deterioration of all thr 

 (palities making for value in the barley. Comparing tin- 

 barley from riots 3 and Plots 1, in the absence of super- 

 phosphate the potash salts on Plots o do not effect much 

 improvement, though their presence on Plots 4 as compared 

 Avitli Plots 2 results in an improved quality. Tlie presence of 

 potash in the manure increases the straw more than the grain. 

 In all the series it will be seen that Plots o and 4, receiving 

 potash, give a lower proportion of grain to straw than do Plots 

 1 and '2, without potash. 



If we compare the series together, the rape calie gives 

 better barleys than either ammonium-salts or nitrate of soda, 

 but the sample which on the average is the best is that grown 

 with the full minerals and ammonium-salts. 



Table XXXV. gives a comparison of the crop of grain and 

 straw, the weight per bushel of the grain, and the proportion 

 of grain to straw, in 1893, a typically dry and hot year, and in 

 1891, a wet but free-growing year. 



The amount of grain produced is not dissimilar in the two 

 years, but 1894 grew very much more straw, the average 

 proportion of grain to straw l)eing only about 7n as 

 against 90 in the dry season. The weight per bushel 

 of the grain is also higher, averaging 557 lb. in the dry 

 year 1893 as against 52-5 lb. in the wet year 1894. In the 

 dry year the plot receiving farmyard manure had a very great 

 advantage, and grew 25 percent, more than the other completely 

 manured plots ; whereas in the wet season when it gave about 

 its average crop, several others gave almost as nmch, and it was 

 actually excelled l)y the plot receiving nitrate of .-^-oda and 

 minerals. As was n(jticed in the case of the whrat erop. 

 nitrate of .soda an.swered better than ammonium-salt >^ in the 

 wet year, giving on Plot 4 N 45 bushels of grain and :):) \ cwi. 

 of straw against 41 -4 bu.shels of grain and 2«)s c-wt. of >tra\v on 

 Plot 4 A; whereas in the dry year the annnonium -sdts had a 

 slight advantage. Taking, however, averages over the whole 

 period, it is found that the seasons in which the ammonium- 



