أعرض تسجيلة المادة بشكل مبسط
| dc.date |
2006-11-29T16:26:09Z |
|
| dc.date |
2006-11-29T16:26:09Z |
|
| dc.date |
1985 |
|
| dc.date.accessioned |
2013-10-16T07:42:41Z |
|
| dc.date.available |
2013-10-16T07:42:41Z |
|
| dc.date.issued |
2013-10-16 |
|
| dc.identifier |
http://hdl.handle.net/1957/3544 |
|
| dc.identifier.uri |
http://koha.mediu.edu.my:8181/xmlui/handle/1957/3544 |
|
| dc.description |
A rare outbreak of hemlock sawfly, Neodiprion tsugae Middleton, was detected in
August in drainages near the Canadian border in Idaho infesting several
thousand acres. Some stands of western hemlock and subalpine fir were severely
defoliated. Understory Engelmann spruce trees were lightly defoliated. The
sawfly overwinters in the egg stage within current needles. Very few eggs
could be found during a survey in October. Some hemlock trees may be topkilled,
but natural control agents usually cause these sawfly outbreaks to
collapse in 1 or 2 years. No control action was recommended. |
|
| dc.language |
en_US |
|
| dc.publisher |
Missoula, Mont. : USDA Forest Service, Northern Region |
|
| dc.relation |
Report (United States. Forest Service. Northern Region) |
|
| dc.relation |
no. 85-26 |
|
| dc.relation |
Forest pest management |
|
| dc.title |
Evaluation of a hemlock sawfly outbreak in the northern tip of Idaho, 1985 |
|
| 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