24 PLANTING IN UGANDA 



mental, but what particularly interests us just 

 now is actual results obtained. 



Further figures, which are more valuable as 

 arising from a larger experiment, were obtained 

 last year at Kivuvu by the writers. The tapping 

 here was carried out on commercial lines. On an 

 average 1,800 trees per month were tapped for 

 four months. The yield in dry rubber was 5*13 

 ozs. for that period. The trees were five years old. 

 The method of tapping was one basal V-cut. 



The following table summarises these figures 

 and gives the yield per annum calculated on the 

 supposition that the trees would yield at the same 

 rate for eight months in the year : 



Experiment. Age of Tree. Area tapped. Yield in ozs. 

 1 4 years 6 ft. of stem 18 



It will be noted that whilst 6 feet of stem was 

 tapped in the Entebbe experiments, only one 

 quarter of that area was worked at Kivuvu. In 

 the latter case the tapping was very light ; in the 



