| dc.date |
2006-12-07T17:36:33Z |
|
| dc.date |
2006-12-07T17:36:33Z |
|
| dc.date |
1987 |
|
| dc.date.accessioned |
2013-10-16T07:43:19Z |
|
| dc.date.available |
2013-10-16T07:43:19Z |
|
| dc.date.issued |
2013-10-16 |
|
| dc.identifier |
http://hdl.handle.net/1957/3661 |
|
| dc.identifier.uri |
http://koha.mediu.edu.my:8181/xmlui/handle/1957/3661 |
|
| dc.description |
The microbial insecticide, Bacillus thuringensis (Bt), was applied from fixed-wing aircraft
to approximately 700 acres of western spruce budworm host type at the rate of 12
billion international units (BIU's) per gallon of water per acre. The objective of this
control project was foliage protection to insure future cone production for this timber
sale area. Evaluations, 20 days after spray application, showed the adjusted defoliation
was 38.2 percent in the sprayed areas and 66.4 percent in the unsprayed areas at the
termination of the budworm feeding period. Population reduction, corrected for natural
mortality at 20 days, was 68 and 81 percent at the time of moth emergence. |
|
| 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. 87-8 |
|
| dc.relation |
Forest pest management |
|
| dc.title |
Western spruce budworm 1/ control project on the Big Timber Ranger District, Gallatin National Forest, Montana |
|
| dc.type |
Technical Report |
|