WEEDS OF ARABLE LAND 



79 



re-establish itself. Extra deep ploughing, with the use 

 of a skim coulter, will kill much of it, and in ordinary 

 tillage operations much may be gathered and burnt 

 after harrowing. Two fallow crops, such as potatoes 

 and mangolds, may also" be taken in succession, so as 



Photo, 1909. 



H. C. Lon?. 



FIG. 17. Silver-weed (Potentilla Anserina L.). 



to afford an opportunity for continual cultivating and 

 hoeing. 



It has been recorded 1 by Mr. W. E. de Winton, 

 Pembroke, that wood-pigeons are at certain times partial 

 to the " sweet and succulent root of the Silver-weed," 

 while pheasants also eat it. Some pigeons, indeed, 

 " seemed to prefer an exclusive diet of this root." 



Creeping Cinquefoil (Potentilla reptans L.) is a peren- 

 nial of similar habit to the last-named species, with 

 runners rooting at the joints, long stalked leaves divided 

 into five lobes, and solitary yellow flowers on slender 



1 four. Bd. Agric., Feb. 1908, p. 686. 



