YIELD OF EVEN-AGED HARDWOOD STANDS. 



41 



POLES CHESTNUT TYPE. 



Table 29 shows the approximate yield per acre in chestnut poles, 

 chestnut and oak ties, and cordwood. It is assumed that all trees 

 which do not come up to the specifications for poles will be cut for 

 ties, and that whatever small trees remain, together with the branches 

 and tops of the felled trees, will be utilized for cordwood. The figures 

 were derived from Volume Tables 45-48, Appendix. As with lumber 

 and ties, the yields given do not take into account the crooked, un- 

 sound, and limby trees in the stand, and should be discounted accord- 

 ing to the number of these per acre. Owing to the difficulty of stat- 

 ing the length of poles except as an average, it was impossible to 

 include this point in the table. 



Table 29. — Yield per acre in poles, and additional ties and cordwood — chestnut type. 





Quality I. 



Quality II. 



Quality III. 



Age. 



Poles. 



Addi- 

 tional 

 ties. 



Addi- 

 tional 

 cord- 

 wood. 



Poles. 



Addi- 

 tional 

 ties. 



Addi- 

 tional 

 cord- 

 wood. 



Poles. 



Addi- 

 tional 

 ties. 



Addi- 

 tional 

 cord- 

 wood. 



Years. 

 30 



Number. 

 6 

 13 

 20 

 30 

 41 

 55 

 71 

 90 

 105 

 117 



Number. 

 50 

 110 

 175 

 195 

 185 

 150 

 115 

 60 



Cords. 

 34 

 37 

 38 

 37 

 35 

 32 

 29 

 26 

 25 

 24 



Number. 



Number. 



Cords. 



Number. 



Number. 



Cords. 



35 



2 

 6 

 11 

 18 

 25 

 33 

 42 

 51 

 59 



40 

 80 

 125 

 170 

 185 

 180 

 175 

 160 

 145 



33 

 36 

 36 

 35 

 33 

 30 

 28 

 26 

 25 









40 









45 









50... 



3 



7 

 12 

 17 

 22 

 26 



80 

 115 

 160 

 175 

 175 

 170 



31 



55 



31 



60 



30 



65 



29 



70 .. 



28 



75 





26 









HOW TO USE THE YIELD TABLES. 



The determination of the future yield of a stand is necessarily some- 

 what complicated, but it should be done by every owner of woodland 

 who is interested in the potential value of his property. 



The first step in the application of yield tables is to determine the 

 age, type, and quality of the stand in question. In most cases the 

 age is known to the owner or to old residents in the vicinity; if not, 

 it can be ascertained with sufficient accuracy by counting the rings 

 on a stump of a felled tree. The tree selected for this purpose should 

 be among the dominant ones, since these have usually been pioneers 

 in the formation of young stands. The type can usually be told by 

 the approximate proportions of oak and chestnut in the stand. The 

 quality class to which the stand belongs can be found by estimating 

 or measuring the height of one or more of the dominant trees, and 

 comparing the result with the heights given in the yield table for the 

 age class nearest to that of the stand. The probable yield of the 

 stand at present and for any five-year period in the future can then 

 be read from tne tables for the proper type and quality class. 



Since the yield tables are for normally stocked stands only, as de- 

 scribed on pages 31-33, they can not be relied upon to foretell yields of 

 over or under stocked stands. Whether or not a stand is fully stocked 



