346 ANALYSES OF NOVA SCOTIAN SOILS. HARLOW. 



matter deficient in nitrogen, just as we have in the peat s.oils 

 much organic matter with little nitrogen; we must say then, 

 that while the organic matter averages fairly well, the 

 nitrogen content is low, there being too much cropping for the 

 amount of nitrogen returned. 



Again, these soils are, as a rule, acid; consequently, the 

 bacteria, which break up the organic matter and form nitrates 

 and w^hich cannot work in the presence of acids, are rendered 

 inactive; this brings into question the availability of the 

 nitrogen and suggests the use of a base like lime. 



The great problem in Nova Scotia seems to be to increase 

 and maintain the amount of available nitrogen. 



The analvses thus far show: — 



(1) That our soils have a good supply of potash but that it 

 is only slightly available. 



(2) That phosphoric acid in many soils is in small amounts, 

 is about one third available and hence soon used. 



(3) That, while volatile matter is quite high, it is deficient 

 in nitrogen. 



(4) That lime is very deficient in many soils. 



Hopkins of Illinois, in speaking of the average soils of 

 the United States says "Phosphorus is the key to permanent 

 agriculture on these lands." 



The recommendation from this study is, if the soil is in 

 fair condition, supply (1) limestone in the powdered form, 2 

 tons per acre every four years; (2) a mineral phosphate as 

 basic slag, or if obtainable, ground rock phosphate, 600 lbs. 

 per acre every three or four years; this will put the land in 

 condition for growing legumes which, if ploughed under or 

 fed and the manure returned to the land, will increase the 

 store of nitrogen and organic matter. This organic matter 

 will help to dissolve the potash which is present, locked up in 

 the soil. 



