1 edition of Seed and cone insects of southern pines found in the catalog.
Seed and cone insects of southern pines
|Statement||[by Bernard H. Ebel ... et al.]|
|Series||USDA Forest Service general technical report SE -- 8|
|Contributions||Ebel, Bernard H., 1926-, United States. State and Private Forestry. Southeastern Area, Southeastern Forest Experiment Station (Asheville, N.C.)|
|The Physical Object|
|Pagination||43 p. :|
|Number of Pages||43|
as an alternate habitat for insects that reduce the seed crop of the two pines. For a 1 -year period collections were usually made ata-week intervals, and then at monthly intervals during a second March , cankers of fusiform rust, Cronartium fusiforme (Pk. 1 Hedge. & Hunt, on slash pine were. All insects were identified and voucher specimens were deposited at the Department of Agricultural Biotechnology, University of Florence, Italy. Seed Health. Analysis of seed health was conducted in site B () on a sample of third-year cones collected in September from pines not included in the “cone .
Collecting pine cones is the first step in growing a new pine tree from seed. No, the actual pine cone is not the seed, but the seed container. When you pick up a pine cone, it is actually the female cone of the pine tree. The male cones are very small and only last . - Explore White cat fibers's board "Pine cone seeds" on Pinterest. See more ideas about Planting flowers, Bonsai tree, Growing plants.7 pins.
Pinus pinaster is a medium-size tree, reaching 20–35 m tall and with a trunk diameter of up to m, exceptionally m.. The bark is orange-red, thick, and deeply fissured at the base of the trunk, somewhat thinner in the upper crown.. The leaves ('needles') are in pairs, very stout (2 mm broad), up to 25 cm long, and bluish-green to distinctly yellowish-green. Perhaps the oldest cone assignable to Pinus is P. belgica, a lignitic cone from the Lower Cretaceous of Belgium (Alvin, a). The cones are ∼ cm long and include a small triangular bract that subtends a large (2 cm long) ovuliferous scale. The seeds possess a thin membranous wing, and one seed per cone scale is most common.
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Additional Physical Format: Online version: Seed and cone insects of southern pines. Asheville, N.C.: USDA, Forest Service, Southeastern Forest Experiment Station. Get this from a library. Seed and cone insects of southern pines.
[Bernard H Ebel; United States. State and Private Forestry. Southeastern Area.; Southeastern Forest Experiment Station (Asheville, N.C.);]. Seed and cone insects occur throughout the known range of the hosts, including o acres of conifer seed orchards.
Two-thirds of the total conifer seed orchard acreage in the United States is stocked with two major species of southern pines (loblolly and slash). Damage. Cone and seed insects limit the production of seed for nursery stock. Seed and cone insects of southern pines.
U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station and Southeastern Area State and Private Forestry. General Technical Report SE 43 p.
Foltz JL, Blakeslee GM. Insects associated with the intensive culture of Pinus ellottii and P. taeda in Florida. This bibliographic record was either created or modified by the Tall Timbers Research Station and Land Conservancy and is provided without charge to promote research and education in Fire Ecology.
The E.V. Komarek Fire Ecology Database is the intellectual property of the Tall Timbers Research Station and Land Conservancy. Seed and Cone Insects Alex C. Mangini Conifer and Hardwood Insects Hosts Seed and cone insects are not nursery pests in the strict sense; they are seldom found on nursery trees.
They are important because they destroy seed available for planting in nurseries. These insects are mostly conifer pests, but some affect hardwoods. Most conifer. Cone and seed insects sometimes restrict the natural regeneration of trees for a few years at a time, as, for example, in conifers on the Pacific coast (16), loblolly pines in Virginia (13), and oak in Michigan (5), but they become particularly important when the seeds.
How to Germinate Pine Cone Seeds. Growing a pine tree from seed is a task for a patient gardener. Worldwide, there are more than different species of. How to Grow a Pine Tree from Seed. You can grow pine trees using seed in pine cone scales that are harvested from female cones.
Female pine cones are considerably larger than their male counterparts. Mature pine cones are woody and brown in appearance. One cone produces about two seeds beneath each scale. Count all sound filled seed on one face of the cut cone. Filled seed have white centers (endosperm).
Aborted seed are darkened or shriveled. Look for insect activity inside the cone and seed (Figure 1). If more than half of the cones sampled have insect damage, subtract one sound cut seed from the count on each damaged cone.
Insect damaged. cone and seed yields of this species important. Also, because longleaf seed quality is much influenced by cone maturity at the time of collection (Barnett ), it is important to more precisely determine its stage of maturity.
Evaluations of seed yield are made in two phases; the first estimates the cone crop, the second predicts seed yield. ), much research has been done on the effects of seed and cone impacts and their effect on crop survival in southern pines (DeBarr,DeBarr and EbelFatzinger et al.and Godbee et al ).
The impact of seed and cone insects on forest productivity in. Similar Insects and Diseases: There are a variety of cone and seed feeding insects in the West.
Other species of insects that feed in seeds and cones of ponderosa pine in the Southwest include pine seed chalcid (Megastigmus albifrons), ponderosa pine cone beetle (Conophthorus ponderosae), and the ponderosa pine seed moth (Laspeyresia.
Look for groups of pines of the species desired. Only female trees produce fertile seed, so you must learn to recognize the differences between the male and female trees before picking the cones.
Seed cones also offer strong clues for pine identification. All native pines in Florida are in the subgenus Pinus (the yellow or diploxylon pines). In this group, the outer (dorsal) surface of each seed cone scale has a diamond-shaped bulge, or “umbo,” formed by the first year’s growth (Figure 1).
Biochemical analyses to determine reducing sugar contents of seeds and x-rays to determine if the seedscoats are filled show promise as seed maturity indices. Citation: Barnett, James P.
Cone and Seed Maturation of Southern Pines. Res. Pap. SO Seed & Cone Pests. Cone beetles - Genus Conophthorus - are among the most destructive of the seed and cone insects.
One representative, Conophthorus ponderosae, is shown here feeding inside a cone. Second year pine cones are attacked by female beetles. She enters the cone through the stalk, severing it and killing the cone regardless of whether or not she lays any eggs in it. Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): (external link) http.
The members of the pine family (pines, spruces, firs, cedars, larches, etc.) have cones that are imbricate (that is, with scales overlapping each other like fish scales).These pine cones, especially the woody female cones, are considered the "archetypal" tree cones. The female cone has two types of scale: the bract scales, and the seed scales (or ovuliferous scales), one subtended by each.
Cone and seed insects have played akey role in the decline of stone pine nut production in Italy. To evaluate the impact caused by native Palearctic and exotic insects, a greater knowledge of pest. To start growing pine trees from seed, gather large brown (or slightly green) cones in fall.
The cones should be closed; if open, they probably have already released their seeds.The quantity and quality of seeds were studied in shortleaf pine cones collected from 48 trees in each of two ha natural stands in western Arkansas, USA. The number of seeds per cone ranged from 0 toand averaged and in the two stands.
Between 30 and 50 percent of the seeds were sound. Overall mean values for total number and total sound seeds compare with previous work. Red-pine conelet, cone and seed losses to insects and other factors in an open-grown plantation and a seed orchard.
For. Ecol. Manage., The temporal sequence and causes of seed and cone loss was investigated at a Pinus resinosa seed orchard and a widely-spaced planting of the same tree species.