Incidence of fusiform rust infection on loblolly pine related to tip moth damage

Conference · Sun Sep 01 00:00:00 EDT 1985

OSTI ID:6940660

Powers, Jr, H R; Stone, D M

Nantucket pine tip moth (Rhyacionia frustrana) is a common pest over most of the natural range of loblolly pine, causing deformation and growth reduction of seedlings and saplings during the early life of the stand. Fusiform rust (caused by Cronartium quercuum f. sp. fusiforme) is a limiting factor in the production of southern pines throughout a broad area of the southeastern United States, extending from South Carolina to Texas. The target areas on the hosts for both pests are young, succulent shoot tissues. Carbofuran, a systematic insecticide, was used to determine the effect of controlling tip moth on seedlings infected by the fusiform rust organism. Beginning with the 2nd year carbofuran was applied over 4 successive years. The insecticide sharply reduced the incidence of tip moth and increased the height of 5-year-old saplings compared with untreated controls. Usually any treatment that stimulates the growth of pines also results in increased rust infection. However, this was not the case here because untreated saplings had significantly more infection. It is not known whether the increased disease incidence on untreated trees was due to the susceptibility and/or total number of secondary shoots initiated in response to tip dieback caused by the tip moth, or if carbofuran itself has some fungicidal effect resulting in lower infection on treated seedlings. 6 refs., 1 tab.

• Research Organization: Forest Service, Athens, GA (USA). Southeastern Forest Experiment Station; Forest Service, Grand Rapids, MI (USA). North Central Forest Experiment Station
• DOE Contract Number: AI09-86SR15122
• OSTI ID: 6940660
• Report Number(s): CONF-8509370-1; ON: DE87003912
• Resource Relation: Conference: Joint conference of IUFRO working parties on forest gall midges and rusts of pines, Seoul, Korea, 16 Sep 1985; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
54 ENVIRONMENTAL SCIENCES
59 BASIC BIOLOGICAL SCIENCES
INSECTICIDES
FIELD TESTS
PINES
PLANT DISEASES
PLANT GROWTH
DISEASE RESISTANCE
FUNGAL DISEASES
MOTHS
SEEDLINGS
ANIMALS
ARTHROPODS
CONIFERS
DISEASES
GROWTH
INFECTIOUS DISEASES
INSECTS
INVERTEBRATES
LEPIDOPTERA
PESTICIDES
PLANTS
TESTING
TREES
560300* - Chemicals Metabolism & Toxicology
510100 - Environment
Terrestrial- Basic Studies- (-1989)
550900 - Pathology