by Forestry Canada, Pacific and Yukon Region, Pacific Forestry Centre in Victoria, B.C .
Includes abstract in French.
|Statement||Roy F. Shepherd, Tom G. Gray, Tom F. Maher.|
|Series||Information report -- BC-X-335., Information report (Pacific Forestry Centre) -- BC-X-335.|
|Contributions||Gray, Tom G., Maher, T. F. 1954-, Pacific Forestry Centre.|
|The Physical Object|
|Pagination||ii, 17 p. :|
|Number of Pages||17|
The African Armyworm Handbook The Status, Biology, Ecology, Epidemiology and Management of Spodoptera exempta (Lepidoptera: Noctuidae) Second Edition D. J. W. Rose1, C. F. Dewhurst2 and W. W. Page2 1 Tea Tree Cottage, Goodworth Clatford, Hampshire, UK 2 Natural Resources Institute, University of Greenwich, Chatham Maritime, Kent UK. Get this from a library! The effects of black army cutworm on backlog reforestation efforts in the North Thompson Valley. [T F Maher; British Columbia. Ministry of Forests and Lands.; Canada/BC Economic & Regional Development Agreement.; Canada-British Columbia Forest Resource Development Agreement.; Canadian Forestry Service.]. Figure 3. Black army cutworm outbreak timing following late and early season fires. Host Susceptibility: Black army cutworm prefers to feed on herbaceous vegetation. If the plantation is well-stocked with herbaceous vegetation, damage to conifers will be minimal except for western larch (Larix occidentalis) which is the most preferred conifer. This publication summarizes pest management of Armyworms and Army cutworms in field crops (alfalfa, canola, corn, small grains, sugarbeets) grown in North Dakota. topics covered include: identification, life cycle, crop damage, trapping, field scouting, and economic thresholds in different field crops.
Identifying cutworm species in infested fields is beneficial for making management decisions. Cutworm larvae typically hide under crop residue or soil and come out at night or on overcast days to feed on seedling stems near the soil surface. Managing cutworms requires regular field scouting. Introduction. The African armyworm is a migratory moth, the larvae (caterpillars) of which are important pests of pastures and cereal crops, predominantly in Africa south of the Sahara, Yemen, and certain countries of the Pacific region.. Normally, only small numbers of this pest occur, usually on pastures. However, periodically the populations increase dramatically and mass migration of moths. Find information about black cutworm in Minnesota corn, including their characteristics, habitat, at-risk fields, signs of damage and strategies for managing infestations. Where they live The black cutworm – Agrostis ipsilon Hufnagel (Lepidoptera: Noctuidae) – is widely distributed in the temperate regions of the world. It can’t survive winters in Minnesota or other latitudes with. Army cutworms are one of the richest foods for predators, such as brown bears, in this ecosystem, where up to 72 per cent of the moth's body weight is fat, thus making it more calorie-rich than elk or deer. This is the highest known body fat percentage of any animal. References.
For example, the black cutworm cuts the corn seedling whereas the dingy, army, darksided, and spotted cutworm are climbing cutworms and rarely cut the plant or cause economic injury. The sandhill cutworm is found exclusively in sandy or course textured soils and feeds underground as does the glassy cutworm. Average stage of development of the cutworm larvae. In each of 5 areas of a field, randomly select and inspect 20 consecutive plants, a total of plants for the field. Count and record the number of plants cut or damaged by black cutworms within each sample set. During the plant inspection process, collect at least 10 black cutworm larvae. Army cutworm feeding on wheat in Sherman County, Ma Photo by Jeanne Falk Jones, K-State Research and Extension. Figure 2. Wheat in Smith County on Ma The field edges have been infested with army cutworms, and the tops of the plants were chewed. Photo by Sandra Wick, K-State Research and Extension, Post Rock District. The Army Cutworm Moth (Euxoa auxiliaris) is a fairly large (40 - 45 mm wingspan) grey-brown is one of the largest moths in the Euxoa genus. There are several forms of adults. The most common has a black basal dash, black between the orbicular and reniform spot, a contrasting paler grey or yellow costa and a pale streak beyond the claviform spot.