TERMS IlSr FORESTRY. 17 



Planted forest. See Forest plantation. 



Planting' plan. A detailed scheme for forest planting on a given area. 



Planting site. An area which is to be artificially stocked with forest growth. 



Plot survey. See Valuation survey. 



Pole, n. A tree from 4 to 12 inches in diameter breasthigh. See Tree class, 



G., Stange. F., perche. 



A small pole is a tree from 4 to 8 inches in diameter breasthigh. 



Syn. : low pole. 



A large 'pole is a tree from 8 to 12 inches in diameter breasthigh. 



Syn.: high pole. 



Pollard, V. To invite the production of shoots at the top of a tree by cutting back 

 the crown. 



G., kopfen. F., eteter, ecimer. 



Pollard, n. A tree whose crown has been cut back to invite the production of 

 shoots. 

 G., Kopfholz. F., tetard. 



Possible merchantable length. See Merchantable length. 



Possible merchantable volume. See Merchantable volume. 



Preliminary examination. A reconnoissance of a forest to determine whether the 



. preparation of a working plan for its management is advisable, or a reconnoissance 



to determine the advisability of forest planting. 

 Preliminary thinning. See Improvement thinning. 

 Preparatory cuttings. See Stand method. 

 Preparatory stage. See Stand method. 

 Present yield. The amount of wood at present contained in given trees upon a 



given area. 



G., Vorrath. F., materiel debout, materiel sur pied. 



Present yield table. A tabular statement of the amount of wood at present con- 

 tained in given trees upon a given area. 



Price increment. See Increment. 



Private forest. A forest which is the property of an individual, corporation, com- 

 pany, or private institution. G., Privatwald. F., foret particuliere. 



Protection forest. A forest whose chief value is to regulate stream flow, prevent 

 erosion, hold shifting sand, or exert any other indirect beneficial effect. 

 G., Schutzwald, Bannwald. F., foret de protection. 



Pruning., n. The removal of branches from standing trees by natural or artificial 

 means. 



G., Aufiistung. F., elagage. 



The clearing of the stem through the death and fall of branches for want of light 

 is known as natural pruning. (G., Astreinigung. F., elagage naturel. ) When 

 living branches are removed by cutting them close to the stem the operation is 

 known as green pruning ( G. , Griinastung. F. , elagage de branches vivantes) ; when 

 it is confined to dead branches, as dry pruning (G., Trockenastung. F., elagage 

 de branches mortes). 



Puddle, V. To dip the roots of young trees in thin mud. 



Puddle, n. A mixture of soil or mold and water, forming thin mud, in which the 

 roots of young trees are dipped to retard drying out during transplanting. 



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