Part III.“j Beeson: Beehole Borer of Teak. OS 
Table 10. — Annual Incidence in a 21-year old Plantation , Mohnyin 
Reserve, Katlia, 
Serial] 
No. of 
Tree. 
Girth. 
1898— 
1901. 
l| 
§ 
o 
Ci 
Ifl 
s 
rH 
© 
o 
OS 
r-t 
8 
00 
o 
Os 
1909 I 
r 
© 
OS 
rH 
Os 
<N 
OS 
rH 
1913 1 
1914 J 
»» 
rH 
OS 
CO 
Os 
r- 
rH 
as 
a 
as 
rH 
TOTAL. 
3 
17-75 
1 
1 
0 
0 
1 
17 
19-0 
1 
u 
0 
0 
0 
0 1 
0 
0 
0 
0 
0 
0 
0 
0 
0 
1 
12 
19-5 
1 
0 
0 
1 
2 
19-5 
1 
2 
0 
0 
0 
0 
0 
1 
2 
6 
14 
23-0 
1 
0 
0 
i ! 
1 
0 
0 
0 
1 
0 
0 
0 
1 
5 
19 
23-0 
i | 
0 
0 
0 
0 
0 
0 
0 
0 
1 
2 
23 
25-0 
3 i 
0 
1 
0 
1 
0 
0 
0 
0 
0 
5 
24 
| 25-25 
1 
0 
0 
0 
0 
0 
0 
0 
0 
1 
25 
26-0 
1 
2 
1 
l 
0 
0 
0 
0 I 
0 
1 
0 
0 
0 
1 
0 
0 
0 
7 
5 
1 30-0 
4 
o 
2 
0 
0 
0 
1 
1 
4 
0 
0 
1 
0 
0 
1 
i 1 
0 
15 
13 
I 29-0 
1 
0 
0 
1 
; 1 
0 
0 
0 
1 
0 
0 
0 
1 
5 
21 
34-0 
1 
0 
0 
2 
4 
0 
1 
0 
0 
! 0 
1 
9 
31 
: 36-0 
4 
0 
i 2 
1 
1 
0 
0 
1 
2 
1 1 
0 
12 
15 
1 44-25 
1 
0 
2 
0 
i 7 
0 
0 
0 
3 
0 
2 
! 0 
0 
15 
Total. 
• 
• • 
5 
2 
1 4 
1 
1 3 
0 
8 
7 
1 17 
7 
5 
2 
6 
2 
7 
1 3 
6 
85 
Reduced 
0-3 
0*1 
0-3 
0-05 
0-2 
0-0 
0-5 
05 
I 
11 
0-5 
0-3 
0-1 
0-4 
0-1 
0-5 
\Z 
'oh 
5-6 
Values. 
9 
[25-0 
1 
0 
0 
0 
2 
0 
1 0 
0 
0 
0 
0 
0 
0 
0 
£ 
3 
l 
20-5 
3 
I 1 
1 
0 
0 
0 
0 
0 
1 o 
8 
5 
6 
310 
1 
0 
0 
1 
1 2 
0 
3 
1 
0 
1 
0 
0 
S 
9 
7 
31-0 
•• 
*3 
S 
0 
0 
L°_ 
0 
! -0 
1 
0 
0 
0 
0 
1 
2 
; 1 
1 
i« 
PH 
10 
Total 
. 
.. 1 4 
3 
rr 
0 
1 2 
1 4 
3 
1 
IjH i 
0 
2 
2 
1 
■*§ 
27 
1 
i 
i 
1 
'.'Soo 
| " 
1 
1 
1 
cn -h 
Reduced 
0-8 
0-6 
0-2 
0-0 
0-4 
0-8 
0-6 
0-2 
0-6 
0-2 
0-0 
0-4 
0-4 
0-2 
0J OS 
1 £ 1-1 
5-4 
Values. 
1 
J 
1 
1 
1 
!h 
The last 4 trees, Nos. 9, 1, 6 and 7 are top-broken trees felled in 
1918 ; plotted separately the general trend of the annual incidence curve 
agrees with that for the 19 trees felled in May, 1919. The data for the 
latter reduced to a mean total attack of 5*6 beeholes per tree, is plotted in 
the Annual Incidence Chart in a solid red line. 
The vertical distribution of beeholes in trees in this plot is given 
on p. 98 and in Diagram 3. 
3. Incidence in natural Forest, Mohnyin Reserve. 
1. Description of Sample Plot. 
Close to the plantation is a patch of pure teak of several acres extent, 
consisting of trees 45 years old and over, and trees about 26 years old. 
The latter appear mainly to be coppice shoots and probably originated 
from clearings made along the line of the railway in 1891-92 ; in 1893 
the railway was open to Mohnyin, several miles above the site of the plots. 
Ring countings on the stumps of the sample trees gave 23 to 28 rings, 
but it is probable that the fellings all took place about the same time. 
Underwood. —The principal trees and shrubs mixed with the teak are 
Bursera serraia , Terminalia chebula , Gmelina arborea , Phyllanthus 
291 ] 
r 
l 
