GEEEN-MANUEES 



OOx 



amendment would thns be in very close contact with the de- 

 caying vegetable tissue. Ordinarily, however, the application 

 of lime at some point in the rotation is sufficient. 



Lime, besides its capacity to alleviate toxic residues, tends 

 to hasten organic decay.^ This is a very important function 

 as the first stage of decomposition, during which soil and plant 

 activities may under certain conditions be detrimentally af- 

 fected, is markedly shortened. Such a promotion is indicated 

 in a green-manuring experiment at Cornell University. The 

 green-manures were seeded in the fall under two treatments, 

 limed and unlimed. The parts per million of nitrates in the 

 soil are given for two dates on the year succeeding, the green- 

 manures having been plowed under either in the fall or early 

 spring. The data are averages of three years. 



Table CXX v I 



INFLUENCE OF LIME ON THE NITRATE ACCUMULATION IN A SOIL 

 RECEIVING VARIOUS GREEN- MANURES.^ 



rilJOP A "NTT) TWTTlA'T'inTI'Nrnn 



Parts Per Mit.tion of Nitrates 





April 



June 



Eye, no lime 



66 

 45 



53 

 45 



77 

 43 



65 



44 



53 



Eye, limed. 



71 



Oats, no lime 



Oats, limed 



43 

 50 



Vetch, no lime 



Vetch, limed 



52 

 63 



Average, no lime 



49 



Average, limed 



61 







^ Lemmermann, 0., et al., Untersuchung uher die zetBetBung der Kdhlen- 

 stoff Verhindungen VerscJteidener Organischen Suhstansen im Boden 

 Spesielle unter dem einfluss der KaTk; Landw. Jahrb., Bd. 41, S. 216- 

 257, 1911. 



''Unpublished data. Dept. Soils, Cornell University. 



