VARIETIES CULTIVATED SWEDES. 



277 



good land in good condition it gives large returns, other- 

 wise it is not a very productive variety. If for winter 

 keep, it is desirable not to sow it too early, so that it may 



. 5. 



be in a growing condition up to the time the frosts set in; 

 under any case, however, it is said to be less subject to 

 mildew than the purple- top varieties. 



GM's improved green-top yellow, Gordons yellow, 

 Hood's imperial yellow, and Pollexfens yellow bullock, 

 are all valuable sub- varieties of the green-top turnips, in- 

 troduced into cultivation by the gentlemen whose names 

 they respectively bear. 



19 



