| dc.date |
2007-01-30T17:19:37Z |
|
| dc.date |
2007-01-30T17:19:37Z |
|
| dc.date |
2002-05 |
|
| dc.date.accessioned |
2013-10-16T07:44:16Z |
|
| dc.date.available |
2013-10-16T07:44:16Z |
|
| dc.date.issued |
2013-10-16 |
|
| dc.identifier |
http://hdl.handle.net/1957/3885 |
|
| dc.identifier.uri |
http://koha.mediu.edu.my:8181/xmlui/handle/1957/3885 |
|
| dc.description |
Preplant soil treatments were implemented to determine effects on populations of potentiallypathogenic
Fusarium and potentially disease-suppressive Trichoderma spp. as well as root
colonization by these and other selected fungi on healthy-appearing, bare root 2-0 western white pine seedlings at the USDA Forest Service Nursery, Coeur d'Alene, Idaho. Soil treatments included
fumigation with dazomet, bare fallowing with periodic cultivation, steam treatment, fallowing with
amendments of Trichoderma harzianum biocontrol agents (BioTrek® and University of Idaho
isolates [UI]), and incorporation of two cultivars of winter Brassica cover crops followed by biocontrol
amendments (UI). Soil Fusarium populations were significantly reduced by dazomet fumigation;
fallowing with biocontrol amendments and incorporating winter mustard crops with biocontrol
amendments resulted in significantly higher Fusarium populations. Trichoderma populations were
significantly decreased by dazomet fumigation, bare fallowing and steam treatment. Incorporation of
Brassica crops did not significantly affect soli Trichoderma populations. Level of Fusarium root
colonization was significantly reduced by dazomet fumigation and steam treatment. High levels of
root colonization by rhizosphere-inhabiting isolates of Cylindrocarpon were common in some treatments. Assaying root colonization by selected fungi may supplement other parameters to
evaluate effectiveness of soil treatments implemented to reduce pathogen populations and improve
conifer seedling production. |
|
| dc.language |
en_US |
|
| dc.publisher |
Missoula, MT : U.S. Dept. of Agriculture, Forest Service, Northern Region |
|
| dc.relation |
Report (United States. Forest Service. Northern Region) |
|
| dc.relation |
no. 02-8 |
|
| dc.relation |
Forest health protection |
|
| dc.title |
Effects of preplant soil treatments on Fusarium and Trichoderma populations and fungal root colonization of 2-0 nondiseased western white pine seedlings - USDA Forest Service Nursery, Coeur d'Alene, Idaho |
|
| dc.type |
Technical Report |
|