166 



PRACTICAL FOREST MANAGEMENT. 



'Ute 

 Rotation. 



exceeded during the coppice rotation of 30 years in a 3rd quality 

 crop. These figures are maximum figures, and are not to be taken 

 as representing in any way the optimum number of standards 

 which should be retained for atiy particular locality : 



These figures show the impossibility of trying to grow sal 

 under coppice with standards when 75 standards per acre are 

 retained throughout the coppice rotation, as has been attempted in 

 Pilibhit in the past, and that it is essential that thinnings in the 

 standards be prescribed if the coppice is to have any chance of. 

 success. 



For the Dhamela Working Circle of Pilibhit in which the 

 standards will average about 10" in diameter it is prescribed that 

 60^-70 standards per acre will be reserved at the start. In the 

 5th year of the coppice, the unthrifty standards will be removed 

 and their number reduced to 4060, and in the 10th year the 

 number will be further reduced to 20 40 standards per acre, 

 which will then be retained till the end of the rotation. 



Exactly the same attention must be paid to the coppice as 

 detailed for the simple coppice system. It must be cleaned and 

 thinned in due season and some artificial reproduction work will 

 be necessary and should be carried out. 



As a matter of principle the length of the rotation to adopt in 

 coppice with standards is irrevocably governed by two consideration. 

 In the first place, it cannot exceed the age at which the underwood 



