144 E. N. MUNNS 



APPLICATION IN FORESTRY 



These results have a definite and immediate bearing on 

 field work. While it may be that the results are not so accurate 

 that one can say definitely what would happen under a definite 

 set of conditions, there are indications which are of great import 

 in timber sale work, and of great import in our reforestation 

 problems. 



It appears that the heaviest seed comes from the best trees. 

 Seed should, therefore, be collected from the thriftiest trees, and 

 trees that are located in stands containing much mistletoe or 

 many suppressed trees should be avoided, for the pollen trans- 

 mits some of the characteristics of the parent to the seed. 



Seed should not be collected from the poorer trees and infested 

 trees because of the lower value of the seed and the deterioration 

 that takes place in the quality of nursery stock. This point 

 should be impressed more that it has been on those collecting 

 tree seed, for three different collections of seed by Forest Rangers 

 on the Angeles Forest were made from the poorer trees because 

 of the greater ease of collection. This can only be detrimental 

 to the vigor and growth of the forest grown from such seed. 



While there is relatively little difference in the self-fertilized 

 and cross-fertilized seed, there is enough to show that in any 

 given region the seed should be collected from that locality 

 which has strong winds at the time of flowering so that cross- 

 fertilization may be secured so far as possible. 



These results appear to show that in timber-sale practice 

 only thrifty seed trees should be left, and all diseased and sup- 

 pressed trees should be removed in order to secure in the future 

 the best possible forest. 



