أعرض تسجيلة المادة بشكل مبسط
| dc.date |
2006-12-05T16:21:47Z |
|
| dc.date |
2006-12-05T16:21:47Z |
|
| dc.date |
1983 |
|
| dc.date.accessioned |
2013-10-16T07:43:04Z |
|
| dc.date.available |
2013-10-16T07:43:04Z |
|
| dc.date.issued |
2013-10-16 |
|
| dc.identifier |
http://hdl.handle.net/1957/3595 |
|
| dc.identifier.uri |
http://koha.mediu.edu.my:8181/xmlui/handle/1957/3595 |
|
| dc.description |
Douglas-fir beetle has increased to epidemic levels in mature-overmature
Douglas-fir that has been top killed by western spruce budworm. About
42 trees per acre have been killed in an area at Lyon's Face and 36 trees
per acre in other areas along the Madison River during the past 3 years.
Sufficient top kill has now occurred that an increase is predicted in
Douglas-fir beetle activity for several years in defoliated and top-killed
stands.
An aerial application of MCH is recommended to protect stands (important
for wildlife habitat and in critical viewing areas) from further loss.
Stand hazard rating and management, both silviculture and aerial spraying
of budworm-infested stands, are recommended where economically and environmentally
feasible to prevent further loss. Rapid salvage of windthrown
Douglas-fir is recommended to reduce the potential buildup of Douglas-fir
beetle populations. |
|
| dc.language |
en_US |
|
| dc.publisher |
Missoula, Mont. : USDA Forest Service, Northern Region, Cooperative Forestry & Pest Management |
|
| dc.relation |
Report (United States. Forest Service. Northern Region) |
|
| dc.relation |
no. 83-7 |
|
| dc.relation |
Cooperative forestry and pest management |
|
| dc.title |
Status of Douglas-fir bark beetle, Madison Ranger District, Beaverhead National Forest, 1982 |
|
| dc.type |
Technical Report |
|
الملفات في هذه المادة
|
لا توجد أي ملفات مرتبطة بهذه المادة.
|
هذه المادة تبدو في المجموعات التالية:
أعرض تسجيلة المادة بشكل مبسط