327 
x 
Manurial Experiments With Rubber. 
H. N. Ridley, Esq., 
Director of Agriculture, 
Singapore. 
Malacca, 30th June, igio. 
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 
y 2 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 -to. 
Total 
Girth 
19-6-10. 
Total 
Increase. 
Average Average 
! Girth Girth 
I9-3-IO. 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, 
