INFLUENCE OF AMMONIA ON QUALITY 



71 



Munro and Beaven, in their excellent paper on the influence 

 of manurial conditions on malting quality (Journal of the Royal 

 Agricultural Society, 1897, 65), have given determinations of 

 nitrogen in the barley grain harvested in 1894 an d 1895 from 

 several of the Rothamsted plots ; multiplying this nitrogen by 

 the factor already used we obtain the percentages of albuminoids 

 shown in the next table. 



TABLE XIX 



PERCENTAGES OF ALBUMINOIDS IN THE DRY MATTER OF 

 BARLEY GRAIN, VARIOUSLY MANURED AT ROTHAMSTED. 



We see here again that when a moderate quantity of ammonia 

 is used with a full supply of ash constituents, as on plot 4 A, 

 the percentage of albuminoids is not raised to any considerable 

 extent ; while an excess of nitrogenous manure (plot 7*), or a 

 lack of some essential ash constituent on a plot receiving 

 ammonia (plot 2 A), at once determines a notable rise in the 

 percentage of albuminoids. 



Munro and Beaven determined the weight of 1,000 grains, 

 and the proportion of grains having a mealy appearance 

 when broken, in the partially dried samples of barley grain from 

 the harvests of twenty four years, 1872-95, preserved at 

 Rothamsted. The results were as follows : 



