أعرض تسجيلة المادة بشكل مبسط
| dc.date |
2006-12-07T17:19:22Z |
|
| dc.date |
2006-12-07T17:19:22Z |
|
| dc.date |
1987 |
|
| dc.date.accessioned |
2013-10-16T07:43:15Z |
|
| dc.date.available |
2013-10-16T07:43:15Z |
|
| dc.date.issued |
2013-10-16 |
|
| dc.identifier |
http://hdl.handle.net/1957/3657 |
|
| dc.identifier.uri |
http://koha.mediu.edu.my:8181/xmlui/handle/1957/3657 |
|
| dc.description |
In conjunction with a proposed suppression project against the Douglas-fir tussock moth
in northern Idaho, more than 1,000 larvae were collected from sample plots throughout
the 32,000-acre treatment area. We had hoped to determine naturally occurring mortality factors which may have contributed to lower than anticipated population levels. Reared
on artificial media, 71.5 percent of the larvae completed their development to the adult
stage. Parasites accounted for 10.6 percent of the pre-adult mortality, native NPV only
3.1 percent; 12.9 percent died of other diseases or unknown causes. No single factor was
identified as having resulted in unexpectedly low tussock moth populations in 1986. |
|
| 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. 87-4 |
|
| dc.relation |
Forest pest management |
|
| dc.title |
Mortality factors associated with laboratory reared Douglas-fir tussock moth larvae : a case study |
|
| dc.type |
Technical Report |
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الملفات في هذه المادة
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لا توجد أي ملفات مرتبطة بهذه المادة.
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هذه المادة تبدو في المجموعات التالية:
أعرض تسجيلة المادة بشكل مبسط