SINGLING" THE CROP. 



305 



These figures show the importance of having the " sing- 

 ling " of th.e plants carefully attended to, as a very slight 

 difference in the distances is followed by a great difference 

 in the return ; as, for instance, at 9-inch distances a crop 

 of medium size roots, say 3 Ibs. each, give a yield of 34 \ 

 tons per acre, whereas the same sized roots at 12-inch dis- 

 tances would only yield 26 tons. Again, too, it is seen 

 what an immense difference the average weight of the 

 bulbs makes to the gross of the crop, and how desirable it 



