327 



Manurial Experiments With Rubber. 



Malacca, 30th June, 1910. 



H. N. Ridley, Esq., 



Director of Agriculture, 

 Singapore. 



Dear Sir. — It may interest you to learn the results of some 

 manuring experiments tried on one of our Estates. The rubber trees 

 were in four different parts of the Estate — 15 trees in each place and 

 ^ lb. of manure was used for each tree. 



The results of a 3 months' trial, as shown in the accompanying 

 statement, are not encouraging to the use of either bone-meal or fish 

 manure; perhaps a longer trial will prove the bone-meal to be more 

 efficacious. 



Yours faithfully, 



F. RiELLI, 

 Financial Manager. 



MALACCA RUBBER PLANTATIONS, LIMITED. 



Abstract of Experiments with Manures on Umbei Rubber Estate. 



Cultivation. 



No. 

 Trees. 



Total 

 Girth 

 19-3-IO. 



Total 

 Girth 

 19-6- 10. 



Total . 

 Increase. 



Average 

 Girth 

 19-3-IO. 



Average 

 Girth 

 19-6-10. 



Average 

 Increase. 



Bone-meal 



60 



380.5 



437.5 



57 



6.34 



7.20 



.95 



No. Manure 



59 



337.5 



395.5 



58 



5.72 



6.70 



.98 



Fish Manure 



60 



375.5 



438 



62.5 



6.25 



7.3' 



1.05 



All measurements in inches taken at three feet above the surface 

 of the ground. 



A Scrap-Bag. 



27th May, 1910. 



(To the Editor, Agricultural Bulletin, Singapore.) 



Dear Sir.— I have lately started and found most efficacious a 

 system with my Tappers, of each coolie collecting his scrap in an old 

 rice sack, cut at the mouth with a semi-circle to fit the base of a tree, 



