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Saturday, July 11, 2020 | History

2 edition of Management of variegated cutworm in peppermint found in the catalog.

Management of variegated cutworm in peppermint

Leonard Bryan Coop

Management of variegated cutworm in peppermint

by Leonard Bryan Coop

  • 21 Want to read
  • 34 Currently reading

Published .
Written in English

    Subjects:
  • Peppermint -- Diseases and pests -- Control.,
  • Cutworms.

  • Edition Notes

    Statementby Leonard Bryan Coop.
    The Physical Object
    Pagination154 leaves, bound :
    Number of Pages154
    ID Numbers
    Open LibraryOL14280637M

    Black cutworm larva (Agrotis ipsilon) and damage it caused to a young corn plant Photo: W.M. Hantsbarger, Appearance. Eggs: Tiny, white-brown spheres (black cutworm) or half-spheres (variegated cutworm), with ribs radiating from center, laid on .   Hosta growers, vegetable gardeners and others had a tougher time than usual this spring with one of our less common pests, the variegated cutworm. The variegated cutworm is found in sites as varied as alfalfa fields to home gardens. A nickname for this species is "climbing" cutworm because of its habit of climbing plants at night to feed on foliage, flowers, buds and fruits.

    Olive green cutworm overwinteras as a partially mature larva. The life cycle of the olive green cutworm is similar to the variegated cutworm, and both pests may occur in the same field at the same time during early July and August. This cutworm is most common West of the Cascade Mountains. Olive Green Cutworm . Book chapters Extension publications Proceedings Other peer-reviewed materials Since last promotion 9 0 1 22 1 Prior to last promotion 19 1 4 19 0 Total 28 1 5 41 1 I. Refereed publications Burrows, M, Thomas, C., McRoberts, N, Bostock, R. Coop, L., Stack, J. Coordination of.

    Cutworms are larvae of several noctuid moth species which are cosmopolitan. Most widely distributed are the black cutworm (Agrotis ipsilon), the variegated cutworm (Peridroma saucia) and the turnip moth (Agrotis segetum). Their origin is uncertain but specimens which were used to describe A. ipsilon in were collected from Austria.   The midgut microsomal aldrin epoxidase of variegated cutworm larvae (Peridroma saucia, Hübner) fed bean or peppermint leaves was up to 10 and 45 times more active, respectively, than that of larvae fed a basic control increases in oxidase activity and cytochrome P levels also occurred in larvae fed mint plant constituents such as menthol menthone, α-pinene, and β .


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Management of variegated cutworm in peppermint by Leonard Bryan Coop Download PDF EPUB FB2

On the other hand, certain peppermint terpenes have been shown to increase mortality of variegated cutworm larvae and pupae (Harwood, ; Harwood et al., ). Bacillus thuringiensis (Bt) applied at 1 to 2 quarts/acre can reduce populations of small cutworms. It benefits from the addition of a spreader sticker or wetting agent and is more.

Abstract. Graduation date: A pest management program for variegated cutworm (VC), Peridroma\ud saucia (Hubner), in Oregon peppermint was developed based on studies\ud of pheromone trapping, sampling methods, and economic thresholds.\ud Pheromone traps effectively trapped VC males and were used to\ud reflect development and oviposition trends.

Bertha armyworm (Mamestra configurata) Mint cutworm (Heliothis phloxiphaga) Spotted cutworm (Xestia c-nigrum) Variegated cutworm (Peridroma saucia). See also: Mint-Redbacked cutworm.

Pest description and crop damage Variegated cutworm larvae are brown to tan usually with a series of white or yellowish "keyhole" marks on each dorsal (top) abdominal segment, though may not always be. A pest management program for variegated cutworm (VC), Peridroma saucia (Hübner), in Oregon peppermint was developed based on studies of pheromone trapping, sampling methods, and economic thresholds.

Pheromone traps effectively trapped VC males and were used to reflect development and oviposition trends. Management. Variegated cutworms feeding on tomato foliage and fruits.

In the home garden, control can be as simple as raking around the base of damaged plants with your fingers until you find the culprit. The brown cutworms blend well with the color of mulch and soil and careful searching will be necessary.

Searching for cutworms at night and. Cutworms. A variety of cutworms may also enjoy munching on your peppermint: the mint cutworm (Heliothis phloxiphaga), the spotted cutworm (Xestia c-nigrum), and the variegated cutworm (Peridroma saucia). Mint cutworms are the largest of the bunch, measuring one to two inches long, with yellow, tan, or green bodies and black spots.

Black cutworm (Agotis ipsilon) Variegated cutworm (Peridroma saucia) Alfalfa looper (Autographa californica) Cabbage looper (Trichoplusia ni) Pest description and crop damage. See: Common Pests of Vegetable Crops. Biology and life history.

See: Common Pests of Vegetable Crops. Management-cultural control. Weed control is important. Variegated Cutworm Model (Coop ) PRIMARY REFERENCE: Coop - Abstract. OTHER MODEL REFERENCES AT: U. Davis Catalog of Phenology Models: Variegated cutworm. MODEL SUMMARY VERSION: Coop L.

Management of Variegated Cutworm in Peppermint. PhD Thesis, Dept. Entomology, Oregon State University. Mature variegated cutworm larvae are to inch (–5 cm) long with smooth skin.

Body color varies from pale gray to dark mottled brown intermixed with red and yellow dots along the dorsum. Body color varies from pale gray to dark mottled brown intermixed with red and yellow dots along the dorsum. AN ABSTRACT OF THE THESIS OF Leonard Bryan Coop for the degree of Doctor of Philosophy in Entomology presented on Ap Title: Management of Variegated Cutworm in Pepperm.

Larvae collected from peppermint fields had higher levels of the enzyme than laboratory-reared cutworms, and activity was much higher in instars than in instar 4. Larvae fed peppermint leaves were more tolerant of acephate, methomyl, and malathion than larvae fed bush snap bean leaves.

See also variegated cutworm management and control. Often the larvae of other species occur on and defoliate mint at about the same time as the variegated cutworm. Bertha armyworm, Memestra configurata, is often seen in mint fields, particularly west of the Cascade Mountains.

Its life cycle is about the same as that of the variegated cutworm. Variegated cutworms large enough to cause noticeable damage are at least 1 cm to 2 cm to long. Period of Activity Since there are two generations of these cutworms during the season, damage may occur when the plants are small and again in late July and August.

Scouting Notes Like other cutworms, variegated cutworms are nocturnal and feeding. Cutworms including variegated cutworm (Figs.

3 and 4), spotted cutworm (Fig. 5), black cutworm, Bertha armyworm, western yellowstriped armyworm (Fig. 6), and others. Damage from redbacked cutworm (Figs. 1 and 2) and black cutworm usually occurs in April, May, and June. Other cutworms typically cause injury during July and August. The variegated cutworm and the black cutworm can both cause damage to beans.

Cutworm caterpillar larvae normally hide under debris on the soil surface during the day, and are active, voracious feeders at night.

Fully-grown larvae range from 1 to inches in length. If disturbed, they will often roll into a tightly coiled "C" shape. variegated cutworm; How to grow Peppermint Commercially Commercial Mint Farming.

Commercial mint farming involves investment in mechanization, acre, labor, and equipment. Initially grown as short term perennial crop will later established as meadow crop.

Other management practices is crop rotation, weeding, tillage, planting of hardened. The rates of parasitism of Peridroma saucia on peppermint (Mentha piperita) in the field and the impact of foliage consumption by parasitized and unparasitized larvae in the laboratory were investigated in Oregon in for use in an economic threshold model for this pest.

A total of 8 hymenopterous parasite species were reared from larvae collected in the field. Variegated Cutworm in Peppermint M.S. Dept. Entomology, Oregon State University, Thesis Title: Orange Tortrix: Parasitoid Complex and Thermal Constants for Egg Hatch. The variegated cutworm can climb the stem of trees, shrubs, vines and garden plants and eat the leaves, buds and fruit.

Species such as glassy cutworms remain in the soil and feed upon roots and underground parts of the plant. Cutworms feed in the evening or night and hide in. Adults have a wing span of about 40 mm and resemble other cutworm moths. The wings are marked with areas of light brown and black. The life cycle of spotted cutworm is similar the variegated cutworm.

Larvae of this pest may occur at the same time as larvae of the variegated cutworm. Management. Elimination of weed infestations, particularly around young trees, will help suppress cutworm damage.

Because of the sporadic nature of this pest complex, thresholds have not been established. Small trees are harmed the most by heavy defoliation, but large trees can withstand even several successive years of heavy defoliation in spring.The variegated cutworm’s color ranges from brown to gray.

The black cutworm larvae are dark gray above and light gray below with black dots along the side of the body. The bronzed cutworm’s color is a mottled burgundy brown. When disturbed cutworms roll into a ball.The black cutworm, also called the greasy cutworm, is the primary cutworm pest of strawberries in most growing areas, but other species occur in damaging numbers on m adults are large moths, usually brown or gray, about inches long.

Mature larvae are robust, nearly inches long, and their smooth skin is either mottled brown or gray.