123 



The following figures deal with the composition of 

 the crop. 



Old trees. Young trees. 



No. i 74-^4 per cent. 74-77 per cent. 



lump 852,, 5.83 



scrap 10.58 11.73 i 



bark. ..... 6.26 7.67 



When the crop returns are entered up, the dry rubber 

 figures must also be carefully made out. The following 

 report shows how account is taken of the different 

 quantities which have to be dealt with. 



5. FIGURES OF OUTPUT. 



The production can be expressed in two ways: pro- 

 duction per acre and production per tree. If an average 

 number of trees is planted per acre, then the production 

 per acre at different planting distances is generally about 

 the same ; the production per tree however, shows important 

 differences, at least as far as the older plantations are 

 concerned. In younger plantations where some of the trees 

 may not yet be suitable for tapping and where the 

 number of trees of tappable age increases year by year, 

 the production per tree is practically the same, as the 

 trees have still space enough during their earlier years, 

 whereas the production per acre will vary considerably. 

 The practice in the Malay Peninsula is generally to 

 reckon out the production at per tree, these figures, 

 however, are deceptive, especially for older plantations. 

 Production figures per tree should not be passed by 

 without mentioning another system In the Malay Peninsula 

 the tendency is growing to value the production in the 



