35 



pursue, is influenced by various considerations, such as his 

 contiguity to market, his ability to obtain manure, the 

 facility of labour, &c. In places where there is a good 

 market for green crops, and an abundant command of 

 manure, some persons pursue 



A biennial, or two year rotation, viz., 1st, green crops ; 

 2nd, wheat. 



This and the following rotation are not practicable, ex- 

 cept on a very small scale, without an unlimited supply of 

 manure, and the command of an adjacent market sufficient 

 to absorb the supply of green crops. They may be con- 

 sidered a sort of transition between market gardening and 

 field husbandry, and are only applicable to prime land. 



High fertility could be maintained in 



A triennial, or three year rotation, viz. 1st, green 

 crops ; 2nd, wheat ; 3rd, oats, barley, or beans. 



On superior lands in many parts of the United King- 

 dom, great reliance is placed in 



A quadrennial, or four year rotation, viz. 1st, green 

 crops ; 2nd, wheat ; 3rd, clover or beans ; 4th, oats. 



The following is very general on good lands, and pre- 

 ferred by many as being less laborious than a four year 

 course, and at the same time preserving the farm in good 

 condition, viz 



A quinquennial, or five year rotation, viz. 1st, green 

 crops ; 2nd, wheat or oats ; 3rd, clover; -4th, grass"; 5th, oats. 



A sexennial, or six year rotation, admits of great variety, 

 and is extensively practised ; a comparison of the results 

 which it yields on different soils will clearly illustrate 

 the immense difference between poor and rich lands in 

 annual value. 



On mountain lands recently reclaimed, the powers of 

 the soil receive their first feeble development After 

 considerable cultivation, the more perfect commixture of 

 the mineral constituents of the soil, its increasing depth 

 from the labour it receives, and the stimulating effect of 

 manure, render it capable of better returns. In a more 

 advanced state, draining and trenching develop its re- 



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