GROWTH OF MATURE CLUMPS 



25 



Table 5. — Number of shoots produced and yield of mature living canes 

 from 8 clumps of Bambusa spinosa at Division of Investigation, Bureau 

 of Forestry, Los Banos, Laguna, Philippine Islands. Data from report 

 by Ranger Oro. 



Total 



number 



of mature 



canes. 



New shoots. 



Percent- 

 age liv- 

 ing. 



Percent- 

 age yield. 



Total 

 number 

 of shoots. 



Total 

 number 

 of dead. 



Total 

 number 

 of living. 



39 



78 



58 



20 



25.5 



51 



24 



29 



24 



5 



17.5 



21 



18 



20 



10 



10 



50 



55.5 



21 



30 



22 



8 



26.5 



38 



8 



12 



9 



3 



25 



37.5 



13 



34 



25 



9 



26.5 



69 



31 



35 



19 



16 



45.5 



51.5 



49 



128 



104 



24 



19 



49 



Average 



28.5 



46.5 



Observations were also made on 5 clumps of Bambusa vulgaris. 

 The results are given in Table 6. Thirty-eight per cent of the 

 young shoots reached maturity, which is 6 per cent of the original 

 number in the clump. Bambusa vulgaris produced fewer canes 

 than Bambusa spinosa, but showed the same general phenomena 

 which have just been described for Bambusa spinosa. 



Table 6. — Number of shoots produced and yield of mature living canes 

 from 5 clumps of Bambusa vulgaris at Division of Investigation, Bureau 

 of Forestry, Los Banos, Laguna, Philippine Islands. Data from report 

 by Ranger Oro. 



Total 



number 



of mature 



canes. 



New shoots. 



Percent- 

 age livi- 

 ing. 





Total 



number 



of shoots. 



Total 

 number 

 of dead. 



34 



Total 

 number 

 of living. 



Percent- 

 age yield. 



48 



48 



14 



29 



29 



9 



24 



13 



11 



46 



122 



30 



39 



30 



9 



23 



30 



22 



20 



12 



8 



40 



36 



44 52 



25 



27 



52 



61 









38 56 













Gigantochloa levis also produces a very large number of new 

 shoots, many of which fail to mature. Records obtained from 

 5 clumps of Gigantochloa levis are given in Table 7. It will be 

 seen from this table that 31 per cent of the new shoots reached 

 maturity while the yield of the new culms is 54 per cent of 

 the number originally in the clump. 



