108 PLANT LIFE ON THE FARM 



corniculatus seems to have slightly the advantage. In 

 the case of heans grown separately, nitrate of soda, 

 unlike ammonia, is found to he beneficial. Among mis- 

 cellaneous plants, Rumex Acetosa and Centaur ea nigra, 

 are specially noteworthy for their abundance; Ranunculi 

 are also in fair quantity. Plantago has diminished, but 

 the most remarkable feature is the enormous quantity 

 of Cerastium triviale produced under the influence of this 

 manure. 



Nitrate of soda gives a late-ripening dark green crop, 

 more leafy than stemmy in character, but nevertheless 

 showing a greater disposition to form stern than in the 

 case of plants treated with ammonia. 



Superphosphate and ammonia. The effects produced 

 by this combination, have corresponded to those which are 

 met with in other plots to which ammonia is added, viz., 

 increased produce, chiefly of graminaceous herbage, greatly 

 diminished leguminous herbage, and relative absence of 

 miscellaneous plants. Festuca ovina has enormously in- 

 creased, and, to a less extent, the hardy creeping Agrostis 

 vulgar is. On the other hand Anthoxanthum odoratum, 

 Holcus lanatus, and Avenapubescens, have decreased. The 

 crop is usually later in ripening than in the case of that to 

 which the superphosphate alone is applied, and with more 

 dark green leaf and less stem, characters which indicate 

 the presence of ammonia. 



Minerals and ammonia. In all the plots to which 

 ammonia and minerals have been continuously applied, the 

 produce is large, the per-centage and weight of grasses 

 large, those of leguminous plants small or nil, and those of 



