-w 



WHEAT SdlLS OF THE ALEXANDRIA DIVISION, 



theoretically suffice for the 

 constituents : — 



complete withdrawal of all these 



On the other hand, the lai'ge tract of light sandy lands known 

 as the " Jack Pine Plains." because ])racticalh- nothing else will 

 grow here, contain only : — 



Nitrogen 1.300 lb. 



Potash 9.700 lb. 



Phosphoric Oxide 1.160 lb. 



Toi'.Acco Crops. 



On a previous i)age. Dr. Wiley was ([noted as saying that 

 some si)ils which ai^e too light for the profitable production of 

 wheat are amongst the finest South Maryland tobacco soils. 

 This view was expressed wholly on the basis of the light physical 

 nature of the soil and its consequent inability to retain an ade- 

 fjuate amount of moisture for wheat-raising pur])Oses. Looking 

 at the matter from the chcutical side, one .should not expect a 

 roil which is deficient in potash to grow good tol)acco. even if 

 physically suited for it. because tobacco is a crop that needs 

 large (|uantities of potash ; ride the following conijiaratixc 

 table of ])lant-food constituents t.nken fi-om one acre of soil by 

 wheat ;in(l tobacco resi)ecti\el\" : — 



WnKA r. 



Straw, 

 lb. 



3,158 

 '2,053 



15 



10.5 

 6 9 



Total, 

 lb. 



4,958 

 4 183 



48 



28.8 



21.1 



ToHACCi 



Leaves, 

 lb. 



Stems, 

 lb. 



1 .fiOO 



1 4C0 



76 



200 



16 



