Table 6. --The effect of soil ooZleoted in the opening and beneath a ponderosa pine 

 canopy on the germination and growth of pondersoa pine seedlings 



Germination and Growth Experiments 



Parameter : 





1 : 





2:3: 





4 : 





5 : 



Mean-^ 



Germination 























(Percent) 









EXPERIMENT A 















Opening Sites 



76 







64 



66.7 



70 



7 



65. 



3 



68. 



5a 



Canopy Sites 



66 







55 



3 58.0 



60 







58. 



7 



59. 



7b 











EXPERIMENT B 















Opening Sites 



83 



8 



64. 



4 81. 1 



63 



3 



73 



3 



73. 



Ic 



Canopy Sites 



40 







57. 



8 55.6 



53 



3 



74 



4 



56. 



2d 



Total Seedling 























weight Cg) 









EXPERIMENT A 















Opening Sites 







1486 



0. 



1190 0.1105 







1408 







1439 







1326a 



Canopy Sites 







1282 







1353 0.1217 







1265 







1215 







1264a 











EXPERIMENT B 















Opening Sites 







1253 







0883 0.1076 







1202 







1177 







1111b 



Canopy Sites 







1414 







1532 0.1010 







0749 







1578 







1257b 



Shoot weight (g) 









EXPERIMENT A 













■ 



Opening Sites 







1077 



0. 



0906 0.0851 







1037 







1069 







0988a 



Canopy Sites 







0949 







0975 0.0912 







0965 







0923 







0945a 











EXPERIMENT B 















Opening Sites 







0708 







0488 0.0603 







0647 







0689 







0626b 



Canopy Sites 







0807 







0835 0.0554 







0424 







0857 







0695b 



Root weight (g) 









EXPERIMENT A 















Opening Sites 







0419 







0283 0.0255 







0371 







0370 







0339a 



Canopy Sites 







0333 







0378 0.0294 







0310 







0292 







0321a 











EXPERIMENT B 















Opening Sites 







0545 







0395 0.0473 







0555 







0488 







0487b 



Canopy Sites 







0608 







0698 0,0456 







0325 







0720 







0561b 



Means in the same experiment followed by different letters are significantly 

 different at the 5 percent level. 



14 



