THE ROTATION. 



167 



would ceaje to reproduce itself completely from the stool ; 

 and in the second place it must be long enough to allow the 

 youngest standards (viz., those to be reserved from amongst the 

 underwood wh-'n it is cut) to attain a length of bole sufficient 

 to let them be considered as tall trees, and a diameter large enough 

 to enable them to stand being isolated. Determined on these 

 consideration, rotations for coppice with standards would, as a 

 rule, be comprised between 30 aad 40 years. 



The rotation of the coppice in sal coppice with standards 

 is usually takea at 30 years corresponding to a diameter of 

 6" for quality III. This produces material suitable for Jcortts, 

 rafters for grass huts, firewood, etc., for which purpose sal coppice 

 is grown. The rotation usually adopted for the standards is two 

 rotations of the coppice or 60 years. Under high forest conditions 

 quality class III stems of this age would average 10" diameter. 

 Grown as standards they should be 12* to 13" diameter. The 

 adoption of such a rotation for the standards renders very easy 

 the correct distribution of the age classes and no standard 

 remains as a standard above the coppice for longer than the one 

 coppice rotation. 



Following the same lines as for simple coppice equiproductive 

 coupes will be laid out one each year of the coppice rotation. 

 They should be cut in regular sequence and where the loo blows 

 the fellings should proceed from east to west. In some case it 

 may be desirable to keep a narrow belt of trees along the western 

 boundary of -the forest. 



This is calculated by area, an estimate of outturn per acre is 

 compiled from figures of past yield or from yield tables. 



The proper selection of standards is a most important matter. 

 They should consist of the most valuable light demanding species 

 of the crop and should be trees which are capable of putting on standards. 

 considerable increment and increasing largely in value during the 

 next coppice rotation. They must also be capable of bearing 

 comparative isolation and should be as far as possible wind firm 

 species. In sal forests the standards will consist of sal or asna 



The 

 Coupes. 



The Yield. 



The 



