3 edition of Bioassay of acephate-treated foliage on three instars of the Douglas-fir tussock moth found in the catalog.
Bioassay of acephate-treated foliage on three instars of the Douglas-fir tussock moth
J. Wayne Brewer
by Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service in Portland, Or
Written in English
Bibliography: p. 6-7.
|Other titles||Bioassay of acephate treated foliage on three instars of the Douglas-fir tussock moth.|
|Statement||J. Wayne Brewer, George P. Markin.|
|Series||Research paper PNW -- 241., Research paper PNW -- 241.|
|Contributions||Markin, George P., Pacific Northwest Forest and Range Experiment Station (Portland, Or.), United States. Forest Service.|
|The Physical Object|
|Pagination||7 p. ;|
(Plant Protection) Fungicides. STUDY. PLAY. fungicide. role in protection of plants breadth of activity mode of action chemical group. include 3 fungicide families, strobilurins and 2 new families, represented by fenamidone and famoxadone. QoI fungicides approved for fruit trees, small fruit, vegetables and turf. plants were randomly selected from each replicate at 2, 5 and 8 days after the 1. st. application (DAA) and 2 DAA after the 2. nd. spray. Whole plants were destructively sampled for the presence of DBM larvae. Efficacy of Foliar Insecticides Against DBM – Fall DBM larvae / 10 plants. Treatment.
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Bioassay of acephate-treated foliage on three instars of the Douglas-fir tussock moth. Portland, Or.: Pacific Northwest Forest and Range Experiment Station, U.S. Dept. Bioassay of acephate-treated foliage on three instars of the Douglas-fir tussock moth / By J.
Wayne (Jesse Wayne) Brewer, George P. Markin, United States. Forest Service and Or.) Pacific Northwest Forest and Range Experiment Station (Portland. Abstract. Bioassay of acephate-treated foliage on three instars of the Douglas-fir tussock moth.
Portland, Or: Pacific Northwest Forest and Range Experiment Station, 7 p. Brewer, J. W., and Markin, G. P.,Bioassay of acephate-treated foliage of three instars of the Douglas-fir tussock moth, U.S. Department of Agriculture Forest Service Research Paper PNW, 7 p., Pacific Northwest Forest and Range Experiment Station, Portland, Oregon.
Google ScholarCited by: 4. United States. Forest Service: Bioassay of acephate-treated foliage on three instars of the Douglas-fir tussock moth / (Portland, Or.: Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, ), also by J.
Wayne Brewer, George P. Markin, and Or.) Pacific Northwest Forest and Range Experiment Station. Instructions are given for Douglas-fir tussock moth control in small severe outbreaks, such as the farmstead infestations which charaterized the Colville, Washington, epidemic.
In these infestations, small groups of fir trees, surrounded by farm land, had severe defoliation and a. The production and persistence of the nuclear polyhedrosis virus of the Douglas-fir tussock moth, Orgyia pseudotsugata, has been determined by periodic sampling of a series of natural and induced have demonstrated that low prevalence rates during the early instars result mainly in larval mortality of older instars which ultimately leads to the greatest production and persistence Cited by: The Douglas-fir tussock moth (Orgyia pseudotsugata McDunnough) defoliated Douglas-fir (Pseudotsuga menziesii var glauca [Beissn.] Franco), in British Columbia from to Tussock moth: Orgyia pseudotsugata MNPV (OpMNPV) NC_ Douglas-fir tussock moth: Peridroma alphabaculovirus isolate GR (PespNPV) NC_ Pearly underwing, cutworm: Plutella xylostella multiple nucleopolyhedrovirus (PlxyMNPV) NC_ Diamondback moth, cabbage moth: Pseudoplusia includens SNPV IE (PsinSNPV-IE) NC_ USA), both for citrus and coffee leaves.
Similarly as for citrus leaves, Obatã coffee leaves from the second and third internodes from the tip down were used because, although young, these leaves are physiologically mature and total-ly expanded, photosynthetically more active, and preferred by coffee leaf-miners (Parra ).
The. randomly selected plants from each treatment plot one day before spraying as pre-treatment count and 5 days after spraying as post- treatment count. The defoliation caused by tobacco caterpillar was counted from randomly selected 10 plants in each treatment plot and calculated the percentage defoliation based on total leaves count.
Toxicity of Selected Insecticides (Spinosad, Indoxacarb and Abamectin) Against the Diamondback Moth (Plutella xylostella L.) On Cabbage Abstract Plutella xylostella L. is a most serious of insect pest for cruciferous or Brassica crops throughout the world.
The common name of this insect pest is the Diamondback Moth (DBM). Vol no Bioassay of acephate-treated foliage on three instars of the Douglas-fir tussock moth / J. Wayne Brewer, George P. Markin by Brewer, J. Wayne (Jesse Wayne), cn; Markin, George P; Pacific Northwest Forest and Range Experiment Station (Portland, Or.).
Such rejection is based especially on chemicals present in green ash foliage. The gypsy moth larval feeding-inhibitory activity is contained in the ethyl acetate extractables of green ash foliage. Three representative columnchromatographed fractions of the extractables contained antifeedant by: 8.
two successive seasons and Three different criteria were used in evaluating the degree of infestation. The results counted that either initial reduction percentage (48 hrs.
after application) or mean percentage residual, (5,7,10 and 15 days after application) reduction for living larvae, mines and parasitoid/40 Size: KB.
Genetic variation in baculoviruses is recognized as a key factor, not only due to the influence of such variation on pathogen transmission and virulence traits, but also because genetic variants can form the basis for novel biological insecticides.
In this study, we examined the genetic variability of Chrysodeixis includens nucleopolyhedrovirus (ChinNPV) present in field isolates obtained from Cited by: 1.
Microbial control agents, including bacteria, fungi, nematodes, protozoa and viruses, provide a more environmentally acceptable and sustainable form of insect pest management than chemical. The Douglas-fir tussock moth is a native insect and a major defoliator of Douglas-fir and true fir forests in western North America.
Outbreaks of this insect periodically destroy large quantities of timber. At least million board feet of timber were killed as a result of an outbreak in eastern Washington in and (Keen ).
Ground application of four insecticides on douglasfir tussock moth and western spruce budworm population in Montana (Montana. Division of Forestry. Insect and disease report) Unknown Binding – by Steve Kohler (Author) See all formats and editions Author: Steve Kohler.
certified in Classification 4 – Ornamental, Tree and Turf Pest Control – and the noncommercial pesticide applicator wishing to become certified in Classification 9 – Ornamental, Tree and Turf Pest Control. To become a certified applicator in the desired category, a candidate must.
Berryman, A. A. (): Populations cycles of the douglas-fir tussock moth (Lepidoptera: Lymantriidae): the dime-delay hypothesis. (Sep 83): Book Review: A Catalogue/Checklist of the Butterflies of America North of Mexico. Extraction and bioassay of female sex pheromone of white-marked tussock moth, Orgyia leucostigma (Lepidoptera.Start studying BIO Learn vocabulary, terms, and more with flashcards, games, and other study tools.The Douglas fir tussock moth is a defoliator of Douglas fir and many of the true firs in western North America.
Tree damage takes place over about a day period in the summer, when developing larvae feed on the foliage.