| ¹æÁ¦¹æ¹ý
|
Work time and ways
|
Merit
|
Demerit
|
All cutting
on small
areas |
- Spring¡¤Autumn (2 times)
- Incineration after all cutting the damaged
areas with the scale |
- Intermediating insects
density¡¯s decreases
- 100% killing on invaded intermediating- insects
- There are not worries on
re-damages by renewing tree kinds, and partial products can
be utilized |
- There are difficult in working
at steep slopes
- Difficulties owing to many outlets
- Worries on safety accidents
|
Felling¡¤
Fumigation
|
- Spring¡¤Autumn (2 times)
- Fumigation after cutting the damaged part into
1m length |
- Intermediating insects
density¡¯s decreases
- 100% killing on invaded intermediating- insects |
- Surrounding tree¡¯s damages in
case of doing felling, Difficulty of
fumigation at steep slopes
- Treating process of plane trees
is hard and excessive cost is
needed, Low efficiency
- Worries on safety accidents
|
| Incineration
|
- Any time throughout
the year
- Incineration after
cutting the damaged
parts only |
- Intermediating insects
density¡¯s decreases
- 100% killing on invaded intermediating- insects |
- It is limited extremely owing
to environmental problems and
risks on forest fires
- Many time are spent for
doing incineration |
| Drug infusion
|
- Any time throughout
the year
(July~ September)
- Drug infusion to attack
holes by injectors |
- Killing insect¡¯s effects are very excellent by injecting accessible pesticides
- Cost-reduction and works
are easy |
- There is risk to omit due to
lots of trespassing holes
- It is difficult to find the
trespassing holes |
Remedy
scatter |
- Spraying Mep Emulsion
of 200 folds with
intervals of 2 weeks |
- By doing concentrated controlling of insect pests at emergence timing of imago, it gives helps in density decreases. |
- There is risk to cause civil
complaints due to difficulty in
moving and drug spraying in
an alpine region and
environmental contamination. |
Super Roll
Trap |
- Any time
throughout the year
- Installing Super Roll Trap at
tree¡¯s bottom
|
- 100% extinction on invaded intermediating-
insects
- Convenient installation
and maintenance
- No safety accidents
|
- Replacing works are
required after designated
period. |
> Products
> Super Roll Trap
