^re synonymous. A crop may be complete or incomplete^ 

 {interrupted), pure 6v mixed, etien-aged or uneven-aged; 

 and it may be described as crowded, close, ' dense, open or 

 ihin. 



Forest crops are sometimes classified as follows in terms 

 of their stages of development : — 



Seedlings. — From the germin.ation of the seeds to the 

 time when the newly developed branches meet. 



Thicket. — From the time of the branches meeting to 

 the fall of the lower branches. 



Poles, — From the fall of the lower branches to the 

 time when the crop attains its full height. 



Trees. — From the time of the stems having attained 

 their full height. 



Crowded crop or wood.— A crop or wood which is so 

 -completely stocked that the crowns of the trees interlace 

 and form an uninterrupted leaf canopy which completely 

 shelters the ground. 



Crown.— The collection of main branches overtopping the 

 -bole. 



In an even-aged forest crop the following crown classes 

 ^re recognised : — 



Fredominant. — Trees with an exceptionally vigorous 

 crown. 



Dominant. — Trees with a well developed. crown. 



Slightly dominant. — Trees with a poorly developed 

 crown. 



Slightly suppressed. — Trees with an incomplete crown. 



Totally suppressed. — Trees with the crown wholly below 

 the level of the dominant trees. 



The first three classes of dominant trees forna the major 

 or primary part of the growing stock : the last two classes 

 form the minor or secondary part of wood or intermediate 

 Jfield, 



Deciduous tree.— A tree which is bare of green foliage for 

 some time during each year. 



Density of crop.— The degree of completeness of tlie leaf- 

 caoopy of the trees that compose it. Thjs is usually 

 expressed by a c6-eJ3B,cient, but may be described by stating 



