CROPS 



187 



appropriate here. Broadly speaking, it may be said that 

 fruit-trees, owing to their far-reaching roots, will succeed in 

 finding sufficient nutriment in soils which may be too poor in 

 plant food to yield payable crops of ordinary farm produce. 



Average Composition op Miscellaneous Seeds. 



Average Composition op Products prom Above. 



Nevertheless it must be remembered that the large growth of 

 a tree locks up in the wood a considerable amount of plant 

 food, and if the tree is to continue to bear fruit additional 

 supplies from the soil must be maintained. In fruit-trees, as 

 in other plants, abundant supplies of nitrogen from the soil 



