32 DOTATION OF CROPS. 



ground, should be succeeded by such as yield small tops, 

 or narrow leaves. 



Plants which during their growth require the operation 

 of stirring the earth should precede such as do not admit 

 of such culture. 



Ground which has been occupied by artichokes, aspara- 

 gus, rhubarb, sea-kale, or such other crops as remain long 

 on a given spot, should be subjected to a regular rotation 

 of crops, for as long a time at least as it remained under 

 such permanent crops. These should be renewed on the 

 same principle as often as they fail to produce luxuriantly. 

 No two crops should be allowed to ripen their seeds in 

 succession, in the same soil. 



Manure should be applied to the most profitable and 

 exhausting crops. Root and seed crops are always more 

 exhausting than leaf crops. 



The following ten years' rotation is from an English 

 work, and we give it to our readers as an example of how a 

 piece of ground should be managed : 



1 peas and beans; 2 broccoli, cabbage and winter 

 greens; 3 carrots, parsnips, beets, scorzonera, salsify, 

 skirret, parsley ; 4 onions, cauliflower, turnips ; 5 spin- 

 ach, spring onions, and other secondary crops ; 6 savoy, 

 broccoli, winter greens, red cabbage, leeks; 7 potatoes; 

 8 turnips, cabbage, broccoli; 9 celery, cardoons; 10 

 Trench beans, etc., as at first. 



The secondary crops mentioned above are those of short 

 duration, such as lettuces, radishes, salads, annual herbs, 

 etc. These can be frequently planted between the rows 

 of the main crops, and taken off before they interfere with 

 each other. 



