shot-hale bore is a small beetle belonging to the family scolytide.

1. % , ; ;Y S xld f a m¾fhaIK wdh kh
%taldnoaO l u uÕskA
; ; .jdfka isg mrsK j dj olajd
.=, , . ,l| a df a ydksh md kh
;wcka d wfífialr
; ; ,uqos ch s l
;lS¾ s fudfydÜá
lSg yd jgmKq úoHd wxYh

2. % , ; ;Y S xld f a m¾fhaIK wdh kh
; . % <f a j dfõ m Odk m sfndaOlhka
icSù oej
fõhd
%fgdaá laia
<o Uqjd
uhsgdj
ka
l| úosk
.=, ,a d
jgmKqj
d

4. .=, , . ,l| a df a ydksh md kh lsrSfus
;wjYH djh
1. ; . , % , ;f A j d lrk ish q m foaY j jHdma j
;we
2. ; .jdk kj j dj fusrE yd fkdfusrE hk
, : ,ish qu wjia djkays iq Nh
3. % ;%fndfyda m fNao md S fõ
4. , ;=j¾Okh nd ùu yd w leãhdfuka
: ;wiajkq wvqù wd¾ sluh ydks we s
lrhs
5. ;l| osrdm a ùu yd .icSù oejfõhdf a ydkshg
;=fya fõ
6. . , , ,fia iels a oq¾j lrhs

5. msrsñ
iqyqU
,q d
.
eyeKq
iqyqU
,q d
.
eyeKq
iqyqU
,q d
.
eyeKq
iqyqU
,q d
; ;ì a r
lSg
:wjia d
<ms jd
mshEöu
; ;m s úu
¥ :iq iq ia dk fiúu
úoSu
; .=, ,f a l| a d
% .cSjk pl h yd tys j djg ydkslrk
:wjia d

6. Tea Research Institute of Sri Lanka
¥ < , :lmamd fjka miq rsls sj j¾Ok wjia d

7. Tea Research Institute of Sri Lanka
.=, , ;=, :a d l|g we ajk wjia dj

9. % , ; ;Y S xld f a m¾fhaIK wdh kh
1. % :cSjk pl fha wjia d oelsh fkdyel
2. .= ,os ld Skhs
3. , .ydksh oelsh yelafla miq ld Skj yd W
%
: ;=wjia dfõoS jk w lvd jeàfïoSh
, ,4' ridhksl lDñkdYl wjfYaI j n mEu
.=, , ;l| a d u¾okh lsrSfï wmyiq djh

10. % , ; ;Y S xld f a m¾fhaIK wdh kh
, %taldnoaO md k l u
> ,oS¾ ld Sk ,flá ld Sk
%; %m sfrdaë m fNao x
;wdidos fkdjQ
frdamK øjH
= < -mdxY l uKdlrKh
=mdxY fmdaIl yd
; %ks¾foaYs YIH l u
; %hym a lDIsld¾ñl l u
- ¿ ,lmamdÿj yd o fk Su

11. % , ; ;Y S xld f a m¾fhaIK wdh kh
; (jdk
1. ; %ks¾foaYs m fNao muKs
2. ; ; , %hym a jdka md k l u
3. ; ; ; < ^ &kshñ jhie s jdka me udi 09
4. %;mQ¾j m sldrl ridhksl biSu

12. % , ; ;Y S xld f a m¾fhaIK wdh kh
. (kj j dj
1. <isgqùfïoS j g %;mQ¾j m sldrl ridhksl
fhoSu
2. < ;=<m uq jir udi 6 lg jrla l| wdjrK m
%;sldrl fhoSu
3. ; = <hym a lDIsld¾ñl yd mdxY l uKdlrK l
%u
4. mig ;= -ldnksl øjH tl lsrSu fldfydU
=mqkaklal
< ; "li f a fldïfmdaiaÜ

13. % , ; ;Y S xld f a m¾fhaIK wdh kh
; . (mrsK j dj
1. ; ¿ , ;lmamdÿjg fmr wju i s 6 l o úrdu ld hla eîu
2. lmamdÿjg fmr ydksfha iajNdjh ks¾Kh lsrSu
3. <m uq lmamdÿfõ isgu ikSmdrlaIl
lmamdÿj
4. ; ,lmamdÿ uqyqK a j lkavidka jeks
, .= , . ,os SrkdYl wvx wdf amkhla e aùu
5. l ;= , <,mamdÿ w len s lr je Su

14. % , ; ;Y S xld f a m¾fhaIK wdh kh
; . (mrsK j dj
6. :ugsgï lmk wjia dfõ mQ¾j ridhksl m
%;sldrl
mig fhoSu
7. mig ;= -ldnksl øjH tl lsrSu fldfydU
=mqkaklal
< ; "li f a fldïfmdaiaÜ
8. .=, , ;= ,lmamdÿfjka miq l| a dg ixfõoS w j g
wdjrK %;m sldrl -fhoSu -udi 8 14
^ % " % " .m foaYh m fNaoh j¾Ok fõ h yd
< % ; &l uKdlrK l u hkdosh u fjkia fõ

15. Tea Research Institute of Sri Lanka
%;wdjrK m sldrl yd bisk
mrsudjka
^, &mrsudj S $fylaghdrh
; .fkdfïrE f a j dj 250-500
; .fïrE f a j dj 1000
%;m sldrl mrsudj$fylaghdrh
, ^ ¿ & ( , *hsï w yqKq i a ¾
(25
25
.% ,50ls E$ 1000 Sgr
,mdï Ths a 1000l
;jdk 10 ^, &Sgr

16. Tea Research Institute of Sri Lanka
: %;id¾ l m sldrl
C OP LSNO

17. Tea Research Institute of Sri Lanka
; < ; +hym a lDIsld¾ñl ms sfj a wdo¾Yk N ñh
; ;úlag¾ j a ,
foKshdh
TRI 2026
(jhi wjqreoq 10
= ; .l f a j d
< ;ms sfj a
;f a m wd
ks¾foaYk
<m quq
j¾Ih
fojk j¾Ih ;f jk j¾Ih
^ ‘ , .jeäjQ wiajekak ls f da
% &Eï
173
wdodhu @ re' 60.00 10,038.00
jeäjQ úhou 3,200.00
,dNh 6,838.00

18. % , ; ;Y S xld f a m¾fhaIK wdh kh 18
idrdxYh
.kjj dj ; .mrsk j dj;jdk
1. <isgqùfïoS j g
%;mQ¾j m sldrl
ridhksl fhoSu
2. < ;=<m uq jir udi
6 lg jrla l| wdjrK m
%;sldrl fhoSu
3. ;hym a lDIsld¾ñl
= <yd mdxY l uKdlrK
%l u
4. mig ldnksl øjH
;= -tl lsrSu fldfydU
= < ;mqkaklal li f a
"fldïfmdaiaÜ
1. ;ks¾foaYs m
%fNao muKs
2. ; ;hym a jdka
, %md k l u
3. ; ;kshñ jhie s
; < ^jdka me udi
&09
4. %;mQ¾j m sldrl
ridhksl biSu
1. ;lmamdÿjg fmr wju i s 6 l
¿o úrduhla
2. lmamdÿjg fmr ydksfha iajNdjh
ks¾Kh lsrSu
3. <m uq lmamdÿfõ isgu
ikSmdrlaIl lmamdÿj
4. ; ,lmamdÿ uqyqK a j
, .=os SrkdYl wvx
, . ,wdf amkhla e aùu
5. l ;= ,mamdÿ w len s lr
<,je Su
6. :ugsgï lmk wjia dfõ mQ¾j
%;ridhksl m sldrl mig
fhoSu
7. mig ;=ldnksl øjH tl lsrSu
8. lmamdÿfjka miq ixfõoS
;= ,w j g wdjrK %;m sldrl

19. Tea Research Institute of Sri Lanka
ia;+;shs

20. Tea Research Institute of Sri Lanka
%; , .l| wdjrk m sldrl fhoSfuka ydksh j ld ekSu

21. % , ; ;Y S xld f a m¾fhaIK wdh kh

22. Tea Research Institute of Sri Lanka
6 18 24 30 3612
¥ ^ &lmamd fjka miq udi
.=, , . .a df a yKh
;= %;w wdjrK m sldrl fhoSu;= %;w wdjrK m sldrl fhoSu
¥lmamd j wdikak
¥ %is re m udKh
ixfõoS wjêhixfõoS wjêh
fkdfñrE

23. % , ; ;Y S xld f a m¾fhaIK wdh kh

24. % , ; ;Y S xld f a m¾fhaIK wdh kh

25. 1200m
600m
1400m
200m
.=, , . ,a df a md kh
;w HdjYHh

26. Tea Research Institute of Sri Lanka

27. • .=os
,ld Skhs
• ixfjsoShs

28. % , ; ;Y S xld f a m¾fhaIK wdh kh
; % , ,ldhsl úoHd aul l shdj ska wvd ùu
• ,c h yd fmdaIl øjH
,wjfYdaIKh wvd ùu
• .fia fldgila muKla
%l shdldrS ùu

29. % , ; ;Y S xld f a m¾fhaIK wdh kh
= ¥Y oaO lmamd j

30. % , ; ;Y S xld f a m¾fhaIK wdh kh
=Y oaO
¥lmamd j

31. % , ; ;Y S xld f a m¾fhaIK wdh kh
; ,lmamdÿ uqyqK a j wdrlaIdj i|yd
,ridhkslhka wdf am lsrSu

32. % , ; ;Y S xld f a m¾fhaIK wdh kh
 T RI 4042
 TRI 3014
 TRI 4006
 TRI 3018
 TRI 4071
%; %m sfrdaë m fNao

33. Tea Research Institute of Sri Lanka
•Sanitation pruning
•Prophylactic stem protectants
•Bush health
ikSmdrlaIl lmamdÿj

34. G% 1
DENSITY 1
MANAGEMENT 1
G% 2
DENSITY 2
MANAGEMENT 2
G% 1
DENSITY 1
MANAGEMENT 1
G% 3
DENSITY 3
MANAGEMENT 3
G% 2
DENSITY 2
MANAGEMENT 2
G% 3
DENSITY 3
MANAGEMENT 3
G % Specific SHB Management Plans

35. 6 18 24 30 3612
AGE AFTER PRUNE (months)
SHB POPULATION NUMBER
Stem protection though spraysStem protection though sprays
Immature Over mature
galleries
PreferredPreferred
Susceptible / Prone
Stage

36. Tea Research Institute of Sri Lanka
Research Progress
in
Alternate Stem
Protectants

37. % , ; ;Y S xld f a m¾fhaIK wdh kh
; < ; +hym a lDIsld¾ñl ms sfj a wdo¾Yk N ñh
; ;úlag¾ j a ,
foKshdh
TRI 2026
(jhi wjqreoq 10
= ; .l f a j d
< ;ms sfj a
;f a m wd
ks¾foaYk
<m quq
j¾Ih
fojk j¾Ih ;f jk j¾Ih
^ ‘ , .jeäjQ wiajekak ls f da
% &Eï
173
wdodhu @ 60.00 10,038.00
jeäjQ úhou 3,200.00
,dNh 6,838.00

38. Tea Research Institute of Sri Lanka
Promising Treatments
C OP LSNO

39. Tea Research Institute of Sri Lanka
SHB damage Control Through Stem Protectants

40. = ¥Y oaO lmamd j

41. ¥ ;, ;lmamd fha we s ydksjQ fldgia
= ¥ ,Y oaO lmamd j l mªre

42. Protection of new clearings

43. % , ; ;Y S xld f a m¾fhaIK wdh kh
Wound Dressing Spraying

44. ¥ ;= ,lmamd w len slsrSu

45. Tea Research Institute of Sri Lanka
Different branch sizes after pruning

46. Tea Research Institute of Sri Lanka
Different stem sizes

47. % , ; ;Y S xld f a m¾fhaIK wdh kh
Spray volume
l/ha
Nc nursery 100
immature 250-500
mature 1000
Treatment Per ha
Lime sulphur (25kg 25 kg) 50kg
Oil palm 1000l

48. Thank You

50. . .=, , . % ; ;=ia a df a ydksfha m udkh weia fïka
, .lsrSu i|yd idïm ekSu
¥ :is lrk wjia dj - ; . ¥ %mrSk j dfõ lmamd pl fha wjidk
¥jif¾ lmamd jg fmr
- . %: ¥kj j dfõ m u lmamd jg
fmr Bg
wdikakj
, .idñm ekSu - , ; .;fylaghdrhlska wyUqf i f dard a mªre 100
. ;= , , .lska tla mªrlska fi'ó 30 la os tla w lene a ne ska
% ; , .; ;=bvfï m fío lSmhla we akï tAjdfha fjkfjku idïm hq h

51. A
B
C
D
E
F
G
B
, , .idïm nd ekSu

52. .Kkh lsrSu
%; ; (ydksfha m sY h (G%) = ¥ ; ~is relr we s | q ixLHdj
~uqt | q ixLHdj
X 100

53. ks¾foaY
ydksfha m
%; ;sY h (G%)
;; ;ydksfha a ajh , %md k l u
- ]0 25
- ]26 50
- ]51 100
wju
:uOHia
; <b d by
;wjYH ke
wjYHhs
wksjd¾hhs