introduction, release, and recovery of parasites of the alfalfa weevil in eastern United States

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Agricultural Research Service, U.S. Dept. of Agriculture , Washington]
Alfalfa weevil -- Biological control., Hypera postica -- Paras
Statement[by Marvin H. Brunson and Leon W. Coles.
ContributionsColes, Leon W., joint author.
LC ClassificationsS21 .Z2382 no. 101
The Physical Object
Pagination12 p.
ID Numbers
Open LibraryOL239654M
LC Control Numberagr68000275

Introduction, release, and recovery of parasites of the alfalfa weevil in eastern United States. Washington] Agricultural Research Service, U.S. Dept. of Agriculture [] (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors.

If you're growing alfalfa, UNL entomologists recommend a new article in the Journal of Integrated Pest Management: Ecology and Management of the Alfalfa Weevil (Coleoptera: Curculionidae) in Western United States Alfalfa by Makenzie E. Pellissier, Zoe Nelson, and Randa Jabbour.

First discovered in Utah inthe alfalfa weevil had spread to to nine states including. Introduction weevils insert eggs in clusters of 2 to 25 inside alfalfa stems.

Larvae become noticeable in April and readily observable in early June. The green larvae feed for roughly 3 to 4 weeks depending on the quality of the alfalfa and the temperature.

Larvae molt or shed their skins three times. The following is virtually the author's abstract. Pupae of Hypera variabilis[Hypera postica] (Hbst.) (postica (Gylh.)) collected in July in Westbrook, Maine, were found to be parasitized at about a 10% level by Eriplanus micator (Grav.).

Of 17 Hymenopterous parasites recovered from pupae, 15 were identified as E. micator and and recovery of parasites of the alfalfa weevil in eastern United States book as Itoplectìs conquisiíor (Say).Author: L.

Boulanger. For more detailed information please see KSRE publication MF Alfalfa Weevil. Alfalfa weevil adult. Alfalfa weevil larva. Alfalfa weevil larval defoliation.

Identification. The adult weevil is 3/inch long and light brown with a dark mid-dorsal line extending down the middle of the back. Adults possess a distinctive snout and readily fall. WEEVIL ANO WORM MANAGEMENT FOR LOW OESERT ALFALFA PROOUCTION Eric T. Natwick U.C. Cooperative Extensi9n Farm Advisor, Imperial County, California WEEVILS Alfalfa Weevil Two species of alfalfa weevil exist in California and Arizona, the alfalfa weevil Hypera postica and the Egyptian alfalfa weevil Hypera brunneipenis.

This larval parasite of the Egyptian alfalfa weevil is established in many areas 0£ the San Joaquin Valley. It attacks older larvae. Parasitized weevil larvae spin their cocoons, but do not pupate.

The wasp pupates within the empty skin 0£ the dead weevil larvae. Generally I it. The introduction, release, and recovery of parasites of the alfalfa weevil in the eastern United States.

Response ofMicroctonus aethiops andM. colesi, parasites of alfalfa weevil to a mixture ofcis-trans andtrans-trans   M.H. Brunson, L.W. ColesThe introduction, release, and recovery of parasites of the alfalfa weevil in eastern United States US Dep Agric Res.

The alfalfa weevil overwinters as an adult in leaf debris and soil where alfalfa is grown. They will surface early in the spring, usually once temperatures are 60 degrees Fahrenheit or higher and will immediately begin feeding off of the alfalfa leaves.

The weevil will form round holes in the leaves they eat. This will continue for several weeks. Managing weevil pests in alfalfa hay Rachael Long and Ian Grettenberger for Progressive Forage Published on 29 April Alfalfa weevils are key pests of alfalfa across the U.S.

Larvae feed on the foliage, causing yield and forage-quality losses to the first and sometimes second hay cutting. These weevils can be challenging to control.

Description introduction, release, and recovery of parasites of the alfalfa weevil in eastern United States EPUB

Alfalfa weevil, (Hypera postica), insect pest of the family Curculionidae (order Coleoptera) whose larvae damage crops, most often alfalfa and originally from Asia, the alfalfa weevil was introduced from Europe into the United States in the early 20th century and is now present in all 48 mainland states.

Alfalfa weevil, Hypera postica (Gyllenhall) (Coleoptera: Curculionidae), is of Eurasian origin. This destructive pest of alfalfa (lucerne) was accidentally established in North America on three separate occasions.

These introductions are commonly identified in the literature as biological strains: western alfalfa weevil, Egyptian alfalfa weevil (=Hypera brunneipennis Boheman), and eastern.

The alfalfa weevil, Hypera postica (Gyllenhal), is a major pest of alfalfa in Virginia despite being under complete biological control in the northeastern states.

In we initiated a 2-yr study of alfalfa weevil populations at three different geographic regions of Virginia to better understand the ecological mechanisms underlying the differences in pest pressure among the major alfalfa. Release and recovery of introduced parasites of the alfalfa weevil in eastern North America.

Agric. Res. Ser., USDA Prod. Res.

Details introduction, release, and recovery of parasites of the alfalfa weevil in eastern United States PDF

Rep. 61 p. Dysart, R. & B. Puttler. The alfalfa weevil parasite Bathyplectes curculionis in Illinois and notes on its dispersal. Econ. Ent. In the northeastern United States, alfalfa weevil.

release, and recovery of parasites of the alfalfa weevil in. eastern United States. Prod. Res. Rep. USDA, Wash. introduction, release and recovery of parasites of.

the alfalfa weevil in the eastern United States, Results from an evaluation survey indicated that the number of alfalfa weevil parasite.

The introduction, release, and recovery of parasites of the alfalfa weevil in eastern United States. U.S. Dep. Agric. Prod. Res. Rep. Poor stands of alfalfa do not justify chemical treatment. They serve as desirable sources of weevil parasite buildup. Biological control of the weevil by a number of parasites is another control option.

Thirteen species of parasites of both alfalfa weevil larvae and adults have been identified in New York alfalfa. The alfalfa weevil, Hypera postica (Gyllenhal) is one of the most important and widespread alfalfa pests in the United States (USDA–Animal and Plant Inspection Service [USDA–APHIS] ).This pest was introduced from the Old World to North America on at least three different occasions (Radcliffe and Flanders ).The Western strain was first introduced around Salt Lake City, UT, in alfalfa weevils Craig Grau, University of Wisconsin apha-nomyces, stunting; bacterial wilt, yields in the northern United States have approached 10 tons per acre while average yields are around 3 tons per acre.

This Optimal soil test levels for alfalfa differ among states due to varying subsoil fertility, nutrient buffering capacities. United States from southern Europe. First reported from Utah inthey are now established in all contiguous states.

There are thought to be two strains of the alfalfa weevil, an eastern strain that ranges as far west as Kansas, and a western strain that infests as far east as Nebraska and North and South Dakota.

Some overlap, and interbreeding. Dysart, R.J, Day, W.H., Release and recovery of introduced parasites of the alfalfa weevil in eastern North America.

US Dep. Agric. Prod. Res. Rep. 61 pp. Common Name: Alfalfa weevil Scientific Name: Varies Order: Coleoptera Description: Adult beetle is a brown weevil, about to inches long, with a downward projecting beak and a wide darker stripe down the middle of the back.

The color may vary from almost uniform brown to nearly black. Larvae are legless, plump-bodied and yellowish when young turning to pale green as they get larger.

Because the alfalfa weevil is an invasive species, Asian and European parasites were imported for control beginning in the early s. From toUSDA distributed 16 million parasites of the alfalfa weevil throughout 38 states [1].

In northeastern and mid-Atlantic states, parasites maintain the alfalfa. "The alfalfa weevil destroys a great deal of alfalfa in northern Utah and southern Idaho.

It also inhabits southwestern Wyoming and is spreading slowly to new territory in all directions. It may in time infest most of the United States. The adult, a small brown snout-beetle, and the larva, a green, worm-like creature, usually escape notice during the first two or three years that they are.

dispersal the species soon became established throughout the area of eastern United States infested by the alfalfa weevil (Dysart and Day ). Although the weevil was first reported from Alachua County inthere were no reports of serious damage until the spring of when a.

For alfalfa growers throughout the United States—and particularly in the western states—the alfalfa weevil (Hypera postica) is a major concern, as damage from infestations lead to decreased yield and quality.A new resource published today in the open-access Journal of Integrated Pest Management offers growers a robust profile of alfalfa weevil and various options for managing it.

Populations of alfalfa weevil peaked between April 23 and May 13 and 50% of the alfalfa growers sprayed an insecticide. The abundance of alfalfa larvae was strongly (P=) and positively correlated with larvae counts the previous week (r=), adult counts on the date sampled (r=), and plant height in cm (r=).

Download introduction, release, and recovery of parasites of the alfalfa weevil in eastern United States EPUB

adapted to the northern United States produce lower yields in Kansas because they are slower to resume growth in the spring, recover slowly after cutting, and go dormant early in the fall.

There are three major alfalfa types from which all U.S. varieties are developed. Common. The eastern strain was detected in Cherokee County in and has spread westward and north­ ward, causing severe damage by The alfalfa weevil is a pest on first-crop alfalfa and sometimes on early growth of the second crop.

Both larvae and adults are injurious, although larval feeding causes the greatest damage.Hypera postica, commonly known as the alfalfa weevil, is a species of beetle in the superfamily Curculionoidea; it can be found in alfalfa fields throughout Europe.

Considered a destructive threat to alfalfa production in North America, several accidental introductions have been successfully countered though the use of a variety of biological control species.COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.