EESIDUAL EFFEC'T OK FAIJ.MVAIM) M WIIM; 7\\ 



to eliminate the ettect of seasons the crop nsiilt> li.ivc all 

 been reduced to the conmion standard of the ci-oit on the 

 continuously dungiMl plot, 7--J, which lias xaricl \,iv little 

 during the period. 



I 



Dun| to laTl.then Unmanured. 



i 



Unmanured the whole time 



Fk.. IJ. — IJ.irlt'y TiiS'il PnKliicf. showinjf residual cfTe«-t of Dun;? ami t\, 

 Munuff in relation to tlu- Dunjf I'lol ]>>'<. 



Diagram 12 expresses these resnh.s in a ^'raphic loiin, and 

 shows that, though the crop gi-own uith tie- lesidues of dnng is 



