448 
semble mimosa and are of a light green colour. The plant 
sembles possesses an advantage over mimosa in that it is 
devoid of thorns and therefore makes it quite easy for 
coolies to go amongst it, up to the present we have only had 
a small nursery plot of this plant; it, however, seeds freely 
and a large area will be put out as seeds ripen. 
The only disadvantage with this plant (that a serious 
one) noted up to date is that as soon as it comes in contact 
with the stem of a plant it quickly climbs, and if not watched 
would soon smother out plants growing amongst it. 
Weeding Experiment, Batu Tiga. — Four 1-acre blocks 
planted with Para rubber — i.e., seedlings two months old 
from nursery — were treated as follows to show the differ- 
ence between clean weeding, the use of cover plants and not 
weeding : 
Plot A. 
C. 
D. 
Planted with mimosa mid not weeded after 
the mimosa had got established; 
Clean weeded ; 
A circle three feet round each plant is weed- 
ed, rest of field un weeded; 
Not weeded. 
The results were: 
Average height. 
Average 
No. of 
girth. 
failures. 
ft. 
ins. 
A. . 
. . 13 
4f • 
5 
. . 35 
B. . 
. . 19 
• d:' 
3 
C. . 
. . 16 
lOf . 
. 4 
. . 34 
D. . 
. . 14 
9i • 
. 4 
. . 26 
ES ON 
Above. — I t 
will be 
noticed 
that tht 
Notes on Above.— It will be noticed that the clean 
weeded plots shows the best results. 
The mimosa plot would show much better results were 
it more even, many of the trees have attained a height of 
over 20 feet, two each 24 feet and one 25 feet high. Most of 
the failures in this plot are, I consider, due to the plants 
being smothered by the mimosa. 
Eradication oe Lalang. {hnperata arundinacea ). — 
Early in the year a series of experiments was initiated for 
the eradication of lalang by spraying and by mechanical 
means, in each case the plots treated were one acre. 
The working plan was as follows: 
Plot A. Control; 
Sprayed ,V solution arsenite of soda; 
C. 
1 ). 
E. 
//, jj , 77 
Ground changkolled over; 
„ and planted with passifiora; 
* 
