To grade a tree, each of the three major features is carefully evaluated and the 

 whole tree is scored excellent, very good, good, fair, poor, or very poor; 6 

 through 1 respectively. Internodal branching is then rated separately to indicate 

 the degree to which it contributes to the overall grade. The same 6 through 1 

 ratings are used. 



For a particular tree to be graded excellent, it must score excellent in each 

 major feature. However, to score excellent in a single major feature does not 

 necessitate an excellent score in all contributing characteristics. For example, a 

 tree with many branches at each node and short internodes may have a very low 

 degree of internodal branching and still score excellent for crown density. Due 

 to the short internolar and many branches per node, this tree doesn't need a high 

 degree of internodal branching for a full appealing crown. 



Another example, might be a tree scored good for crown density, even though 

 it has 12-inch internodal, 4 branches per node and healthy long needles if the 

 lack of internodal branching leaves naked spaces between the branches of each 

 node. Color is not included in the above grading system. 



C. Methods of Analyses 



Nitrogen foliar and soil analyses were made with the Kjeldahl method from 

 the Association of Official Agricultural Chemists. 



Phosphorus foliar analysis by the molydate blue method as described by H. 

 Hill, Central Experimental Farm, Ottawa, Canada. Soil phosphorus and reserve 

 phosphorus procedures as outlined by Vermont Soil Test, based in part on Bray 

 and Kutz procedure as adapted by Jackson, M.L., Soil Chemical Analysis 

 (Englewood Cliffs, New Jersey: Prentice-Hall, Inc., 1958), p. 160. 



Calcium, magnesium, iron mangenese and zinc analyses were made by use of 

 atomic absorption spectrophotometer. 



Potassium foliar and soil analyses employed the flame emission spectrograph. 



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