SOIL ACIDITY 



243 



as the residue from the nitrification. Figs. 56 and ">" show 



the effect of such acidity on corn and oats. Figs. 58 and ."><) 



ii 



r.«f .' n<i b-atm it 



LlmC KvqulfCliW"! W *W*Hl 

 | ,|t'IVAlcnt Ui U WOO 1-0'. ^v".! 



lUl.li TBBATM6W1 



4» Lin. |CL •» Bk U"» '■'"•* 

 MLn K,0 •« «"'■ o< ►'"1»»> V 



Apollol l» "> rn •""' *"**' '" 

 4,t rolallon.vii. Mf« <-l»- ■*"» 

 and !!•>{««*«'' * lhnolli>V IT-HI*. 







Fig. 56.— Effect of acidity resulting from use of ammonium sulphate. 

 Corn. General fertilizer plats, Department of Agronomy, Pennsylvania 

 Station. 



