PKODUCE OF CROP. 479 



not all be charged against the carrots, as this extra labour 

 bestowed upon them entails a benefit- on the succeeding 

 straw crop. From 20 to 30 tons to the acre may be taken as 

 a fair return on average soils, where deep tillage and liberal 

 manuring have preceded the crop. In the neighbourhood 

 of large cities carrots generally are a very remunerative 

 crop, as there is almost always a ready sale at very satis- 

 factory prices for any portion that may not be required 

 for home consumption. Of late years magnificent 

 specimens have been exhibited at our winter shows at 

 Birmingham and London. At the former place the year 

 before last (1858), carrots were exhibited nearly 20 inches 

 in circumference, and weighing from 12 to 13 Ibs. each. 

 They were grown on a light soil of the new red sandstone 

 formation, but the details of the mode of cultivation 1 

 adopted presented no points which have not already been 

 alluded to here. The total weight of the crop per acre was 

 estimated at 28 tons. If, however, we could always 

 secure the roots the above size, or even half of it, we 

 should, according to the table given, p. 305, have a yield 

 greatly exceeding that quantity. 



The diseases to which the carrot is liable do not appear 

 to have excited much attention, as, with the exception of 

 the tendency to throw out lateral roots or forks, due to 

 degeneracy of seed or unsuitability of soil, and a disease 

 noticed by Dr. Russek, 2 of Berlin, some few years ago, we 

 seldom hear of any injuries being sustained, save those 

 inflicted by some of the numerous insects that infest this 

 plant during its long career in the soil. 



The insects infesting the carrot crops are well-nigh as 

 numerous as those attacking the turnip, though they are 

 free from any single one that commits such wholesale de- 



1 Roy. Agri. Soc. Jour., vol. xix. p. 574. 



2 Monthly Keport of the Berlin Academy for January, 1852. Details of the 

 paper are given in Agri. Gaz., 1853, p. 484. 



