| dc.date |
2006-11-21T18:37:13Z |
|
| dc.date |
2006-11-21T18:37:13Z |
|
| dc.date |
1977 |
|
| dc.date.accessioned |
2013-10-16T07:42:03Z |
|
| dc.date.available |
2013-10-16T07:42:03Z |
|
| dc.date.issued |
2013-10-16 |
|
| dc.identifier |
http://hdl.handle.net/1957/3475 |
|
| dc.identifier.uri |
http://koha.mediu.edu.my:8181/xmlui/handle/1957/3475 |
|
| dc.description |
A pilot project to evaluate trichlorfon and acephate for suppressing
western spruce budworm populations was conducted on the Helena National
Forest, Montana. Both insecticides were applied at 1 pound active
ingredient per acre. Application was made with a Bell 205A helicopter
using eight Beecomist Model 350 spray heads. Treatments and controls
were replicated three times. Each replicate covered approximately 1,000
acres. Treatments were applied under a population reduction strategy.
The effects of treatments on fish and aquatic organisms and budworm
parasites were monitored.
Covariance analysis of budworm larval populations 10 days after spraying
showed that trichlorfon and acephate gave 59.53 and 86.86 percent control
respectively. The degree of foliage protection was estimated at 13.67
percent for trichlorfon and 11.80 percent for acephate.
Treatments did not have a significant effect on budworm parasites, fish,
or aquatic organisms. |
|
| dc.language |
en_US |
|
| dc.publisher |
[Missoula, Mont.] : USDA, Forest Service, Northern Region, State and Private Forestry |
|
| dc.relation |
Report (United States. Forest Service. Northern Region) |
|
| dc.relation |
no. 77-16 |
|
| dc.relation |
Forest insect & disease management |
|
| dc.title |
A pilot project evaluating trichlorfon and acephate for managing the western spruce budworm, Choristoneura occidentalis Freeman, Helena National Forest, Montana, 1976 |
|
| dc.type |
Technical Report |
|