Evaluation of insect defoliation in baldcypress and its relationshiop to flooding

  • 30 Pages
  • 4.83 MB
  • English
U.S. Dept. of the Interior, National Biological Service , [Washington, D.C.]
Baldcypress -- Louisiana., Floodplain forest ecology -- Louisiana., Forested wetlands -- Louisiana., Tortricidae -- Louis
Statementby Richard A. Goyer and Jim L. Chambers.
SeriesBiological science report -- 8
ContributionsChambers, Jim L., United States. National Biological Service.
LC ClassificationsQH541.5.V3 G69 1996
The Physical Object
Paginationiv, 30 p. :
ID Numbers
Open LibraryOL18399008M

Evaluation of Insect Defoliation in Baldcypress and Its Relationship to Flooding by Richard A. Goyer Department of Entomology and Jim L. Chambers School of Forestry, Wildlife, and Fisheries Louisiana Agricultural Experiment Station Louisiana State University Agricultural Center Baton Rouge, LA.

Baldcypress, renowned for its lack of serious insect and disease problems (Brown and Montz ), presently experiences annual repeated defoliation, often complete, by the immature stages of Evaluation of insect defoliation in baldcypress and its relationshiop to flooding book.

Evaluation of insect defoliation in baldcypress and its relationship to flooding. [Washington, D.C.]: U.S. Dept. of the Interior, National Biological Service, [] (OCoLC)   The easiest way to solve the foliage stress problem is to simply remove all the foliage.

Early July is a good time to do this in the South. I’m guaranteed to get a nice fresh round of growth starting in a couple of weeks, meaning I’ll have a tree that can be shown in the fall if I want to.

Figure 2 shows the relationship between defoliation and yield loss for navy beans from manual defoliation (not insect induced). The information in Figure 2 can be used as a guideline in determining the amount of defoliation that is tolerable.

For example, forty percent defoliation of vegetative beans will result in only about five percent yield. Baldcypress (Taxodium distichum (L.) Rich.) and water tupelo (Nyssa aquatica L.) are two dominant tree species in forested wetlands in the southern United States.

Baldcypress and water tupelo are tolerant to flooding; however, growth generally is compromised with flooding (Shanklin and Kozlowski,Flynn, ). Defoliating Insect Treatment: If you see signs of defoliating insects this summer make sure to book a consultation with our arborist online or call Treatment may consist of a soil drench, trunk injection, foliar spray, or even beneficial control.

Foliage quality may decline in deciduous trees following defoliation, thus affecting the insect generation responsible for the herbivory (rapid induced resistance, RIR), or future generations (delayed induced resistance, DIR).

During outbreaks, trees often suffer partial or complete defoliation for two or more successive years, yet most studies. Defoliating Insects. Defoliating Insects.

As spring begins, eggs laid in trees by adult defoliating insects will hatch and the larvae will begin feeding on leaves and tender parts of the plant. In our area, this includes pests like California oakworm, leaf tiers and leaf roller caterpillars.

Defoliating Insects Colorado Potato Beetle European Corn Borer. Abstract. Insect defoliators have long been recognized as important pests in forestry. In West Africa, the main species of insect defoliators belong to three orders: butterflies and moths (Lepidoptera), grasshoppers (Orthoptera) and leaf beetles (Coleoptera).

PLANT RESPONSES TO DEFOLIATION: A PHYSIOLOGICAL, MORPHOLOGICAL AND DEMOGRAPHIC EVALUATION David D. Briske and James H. Richards Department of Rangeland Ecology and Management, Texas A&M University, College Station, TX and Department of Land, Air and Water Resources, University of California, Davis, CA   Abstract.

The baldcypress leafroller, Archips goyerana Kruse (Lepidoptera: Tortricidae), is a specialist on Taxodium distichum (L.) Richard and has caused serious defoliation in swamps of southeastern Louisiana, accelerating decline of baldcypress forests concurrently suffering from nutrient depletion, prolonged flooding, and saltwater intrusion.

We investigated the composition of the sex. Evaluation of insect defoliation in baldcypress and its relationship to flooding,Biological Science Report 8 Botanical reconnaissance of the Tuxedni Wilderness Area, Alaska,Biological Science Report 6 A critical review of the aerial and ground surveys of breeding waterfowl in North America,Biological Science Report 5.

insect defoliation in baldcypress and its relation. ship to flooding. National Biological Service Bi- ological Science Report 8. 36 pp. Goyer. and G. Lenhard. A new insect pest. Three identical provenance trials of Eucalyptus delegatensis, established at Batlow, N.S.W., Parrawe, Tasmania, and Myrtle Bank, Tasmania, were sampled in to determine whether differential insec.

Evaluation of the method showed that 74% of the defoliation was detected with a misclassification of undisturbed areas of 39% in MODIS pixels with at least 50% birch forest cover.

The ability of the method to detect defoliation can be adjusted to fit the purpose of a study; with a higher threshold applied, % of the defoliation in the.

Goyer RA, Chambers J () Evolution of insect defoliation in baldcy-press and its relationship to flooding. Biological Science Report 8. U.S. Department of. The components of plant resistance to insect attack are then discussed, especially tolerance and the various ways in which plants and crops compensate for injury.

The review concludes with an examination of the quantitative relationships between numbers of insects. where we regulated defoliation by gypsy moths as well as nitrogen availability. To our knowledge, this is the first manipulative field experiment at this scale to exam-ine the effects of severe insect defoliation on whole-tree physiology.

Defoliation decreased tree growth and in-creased the rate of top dieback in the stand. Defoliation. Defoliating insects come in a variety of shapes, sizes and species, but they all have one thing in common – they damage trees by causing massive leaf loss or defoliation that results in loss of vigor and decline over time.

Some of the most common defoliating insects include sawflies, caterpillars and. After model parameterization, sensitivity analyses, and evaluation against eddy flux measurements made inthe model was used to predict C assimilation for an undisturbed year inand in when the stand was completely defoliated for 2–3 weeks during an infestation of gypsy moths (Lymantria dispar L.).

Following defoliation, only. Baldcypress and water tupelo response to insect defoliation and nutrient augmentation in Maurepas Swamp Louisiana, USA.

For. Ecol.

Description Evaluation of insect defoliation in baldcypress and its relationshiop to flooding PDF

Mgt. Progress 01/01/05 to 12/31/05 Outputs Regeneration of baldcypress at varying environmental settings common in forested wetlands in Louisiana has both local and long range interest from scientists.

Defoliating insects damage trees by eating leaves or needles, removing the photosynthetic tissue critical for plant maintenance and growth.

A significant loss of leaves or needles results in growth loss, increased susceptibility to attack by other insects and pathogens, and sometimes tree mortality.

The rice water weevil, Lissorhoptrus oryzophilus Kuschel, is the most destructive insect pest of rice in the United States. As part of an effort to develop strategies to manage this pest, the ovipositional and feeding habits of L.

oryzophilus on rice plants subjected to different flooding treatments were characterized in greenhouse studies. the scientific insect order, and time of the growing season that feeding occurs. Defoliation Pattern Defoliators create many patterns of defoliation on the individual leaf.

Some insects completely eat the leaf blade leaving only the large veins. Some create a “shot hole” pattern by eating holes in the leaf blade.

Other insects make “leaf. defoliation event with only a reduction in vigor. Exceptions are evergreenswhich are usually killed by one complete defoliation.

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Two to three consecutive years of early season defoliation can kill even the healthiest trees. Defoliation on Shade Trees. Tree Condition. The relative vigor of a tree has a large influence on its. Effects of Insect Defoliation on Growth and Mortality of Trees. Annual Review of Entomology Vol.

(Volume publication date January ) Insect declines are being reported worldwide for flying, ground, and aquatic lineages.

Most reports come from western and northern Europe, where the insect fauna is well-studied and there are. Effects of Insect Defoliation on Growth and Mortality of Trees. Annual Review of Entomology Vol.

(Volume publication date January ) AbstractPush-pull strategies involve the behavioral manipulation of insect pests and their natural enemies via the integration of stimuli that act to make the protected resource unattractive or.

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insect defoliation and nitrogen cycling in forests gary m. lovett, lynn m. christenson, peter m. groffman, clive g. jones, julie e. hart, and myron j. mitchell laboratory, plot, and watershed studies indicate that most of the nitrogen released from forest foliage as a result of defoliation by insects.

Reference Guide for Common Insect Associated with Defoliation. Insect Appea rance Damage Action Col or ado P o ta to B e e tle (C PB) Adult: round, hard-shelled, yellow with black stripes, half inch long.

Eggs: oval, yellow to bright orange, clustered. Larva: soft-shell, slug-like, red-orange-tan with black dots in a row on each side. The.Outbreaks of defoliating insects have occasionally weakened trees to the point they have become susceptible to secondary bark beetle invasion.

For example, secondary bark beetles killed % of the ponderosa pine (Pinus ponderosa Laws.) defoliated by the pine butterfly, Neophasia menapia Felder & Felder, in central Idaho (Evenden ).Other studies have shown N exports after defoliation N export not from foliar-frass cycling, but due to: • atmospheric deposit rates •N mobilized by defoliation Coweeta and the Cankerworm •Increase in stream water nitrate, but still very low (insect-generated N deposition lost via leaching Hubbard Brook and Heterocampa.