2 edition of alfalfa weevil or phytonomus = found in the catalog.
alfalfa weevil or phytonomus =
Vladimir Vladimirovich Iakhontov
by Published for the U.S. Dept. of Agriculture Agricultural Research Service and the National Science Foundation, Washington, D.C. by the Indian National Scientific Documentation Centre ; Springfield, Va. : available from the U.S. Dept. of Commerce, National Technical Information Service in New Delhi
Written in English
|Statement||V.V. Yakhontov ; translated from Russian.|
|The Physical Object|
|Pagination||ii, 300 p. :|
|Number of Pages||300|
An alfalfa weevil-specific fungus occurs in many alfalfa-growing regions in California that aids in biological control. In fields with sustained moisture, this soil-dwelling fungus (Zoophthora phytonomi) sporulates and infects the larval stage, causing death of weevil larvae within days of infection. 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 Missing: book.
The alfalfa weevil, Hypera postica Gyll.,4 was first discovered in lowland middle California in The extent and direction of its spread from its original areas are shown on the map in figure 1. Adult weevils feed on foliage and lay eggs in the stem, particularly from fall to early spring. Although alfalfa weevil adults feed on alfalfa, larvae are by far the primary concern (Figure 1). In the spring, eggs hatch and larvae begin feeding. Young larvae feed on leaf buds at the tip of the plant, while older larvae feed primarily on open Missing: book.
Get this from a library! The alfalfa weevil and methods of controlling it. [Geo I Reeves;] -- The alfalfa weevil destroys a great deal of alfalfa in northern Utah and southern Idaho. It also inhabit southwestern Wyoming and is spreading slowly to new territory in all directions. I may in time. English-German Dictionary: Translation for alfalfa weevil [Hypera postica syn H variabilis Phytonomus posticus P variabilis].
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The synonymy and systematic position of Hypera (Phytonomus) variabilis, Hbst., are discussed, and keys are given from the literature to the subtribes and genera of the tribe HYPERINI and the 85 species of Phytonomus, which the author regards as a distinct : V. Yakhontov. The alfalfa weevil: (Phytonomus murinus) Item Preview Alfalfa weevil, Agricultural pests Publisher Washington, D.C.: U.S.
Dept. of Agriculture, Bureau of Entomology This book is available with additional data at Biodiversity Heritage Library. See also WorldCat (this item). Additional Physical Format: Online version: Iakhontov, Vladimir Vladimirovich. Alfalfa weevil or phytonomus. New Delhi: Published for the U.S.
Dept. of Agriculture Agricultural Research Service and the National Science Foundation, Washington, D.C. by the Indian National Scientific Documentation Centre ; Springfield, Va.: Available from the U.S.
Dept. of Commerce, National Technical. The Online Books Page. Online Books by. Webster (Webster, F. (Francis Marion), ) Preliminary report on the alfalfa weevil.
[Phytonomus posticus] (Washington, Govt. print. off., ) (page images at HathiTrust) Webster, F. (Francis Marion), Present and future of applied entomology in America. By F. (Francis Marion) Webster, United States. Bureau of Entomology. and United States. Dept. of Agriculture. Regrowth damaged by adult weevils.
Close-up of adult weevil 'debarking' damage. Spray gallonage for ground equipment: 10 to 12 gallons per acre for 7-inch alfalfa; 15 to 20 gallons for 8- to inch alfalfa; at least 20 gallons per acre on alfalfa more than 15 inches tall.
Use 30 psi and hollow cone nozzles. Fig. The alfalfa weevil (Phytonomus posticus): Adult 10 2. The clover-leaf weevil (Hypera punctata): Stages and work 16 3. The alfalfa weevil: Eggs 17 4. The alfalfa weevil: Larvse attacking foliage; eggs in stem 18 5.
The alfalfa weevil: Larva 21 6. The alfalfa weevil: Cocoon 23 7. Alfalfa weevil is an important defoliating pest in alfalfa.
Heavy infestations can reduce tonnage and forage quality. Adults feed on plants, but typically the larvae cause the majority of plant injury.
Female alfalfa weevils can layeggs in Missing: book. alfalfa weevil, blister beetles; clover leaf weevils; grasshopper; pea aphids; plant bug, adults; potato leafhopper, adult; spittlebug; variegated cutworm Judy A. Thies, USDA-ARS root-lesion nematodes John Wedberg, University of Wisconsin alfalfa blotch leafminer; clover root curculio, damage Thanks also to Bruce Gossen and R´eal.
Hypera postica Gyllenhal. The alfalfa weevil is one of the primary insect defoliators of alfalfa. Thought to be of Asian origin, the alfalfa weevil was introduced into the United States from southern Europe. First discovered in in Utah, it is now present in all 48 mainland states.
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.
The alfalfa weevil is an important pest of established alfalfa stands in New York. New seedings are not typically affected. The alfalfa weevil overwinters primarily as an adult in New York. These adults return to alfalfa fields in the spring when temperatures permit and begin to feed and lay eggs in the stems of developing alfalfa g: book.
to insect pests, including the spotted alfalfa aphid and pea aphid, has been incorporated into some vari - eties, and they are recommended. Varietal resistance to the alfalfa weevil has not been achieved; however, a few varieties are tolerant to low levels of weevil infestations.
Increased insect File Size: KB. Food consumption of the alfalfa weevil. Ecological studies on the alfalfa weevil, Phytonomus variabilis Herbst. (Col., Curculionidae).
January Hessien A. Boraei; View full-text. 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 : Curculionidae. PDF | On Jan 1,H.A. Boraei and others published Effects of Altosid on preventing diapuse of the alfalfa weevil (Phytonomus variabilis Herbst., Col.: Curculionidae).
| Find, read and cite. The alfalfa weevil is rapidly spreading over the entire alfalfa-growing areas of the western states. Its injury to the alfalfa crop still aggregates an enormous sum annually.
This is due to the fact that each year it is extending its attack into new territory. Control measures adopted by the farmers are reducing its injury in the treated fields. Many farmers are now cutting more alfalfa in the Author: Harold R. Hagan. This study examined the use of degree-day models to predict alfalfa weevil Hypera postica (Gyllenhal) (Coleoptera: Curculionidae) population development on the Canadian prairies.
Air temperatures, alfalfa weevil abundance, and instar data were collected in and from 13 alfalfa (Medicago sativa Linnaeus; Fabaceae) fields across Alberta, Saskatchewan, and : Juliana Soroka, Larry Grenkow, Héctor Cárcamo, Scott Meers, Shelley Barkley, John Gavloski.
Alfalfa Weevil Control The best alfalfa weevil management decisions are based on stem sampling. If this information is not available then control is recommended when 25% to 50% of the tips are being fed upon and 2 or more larvae can be found per stem.
Alfalfa Weevil Insecticides Rate File Size: 72KB. Hypera is a genus of clover and alfalfa weevils in the beetle family Curculionidae. There are at least described species in : Insecta.
The alfalfa leaf-weevil (Phytonomus murinus Fab.) which has during the last three years been doing considerable damage in the central part of this State, is a European insect which by some means unknown has been introduced in to Utah.
The species appears to be not uncommon throughout Europe and parts of Asia and Africa. It belongs to the large order of hard-shelled insects called beetles Author: E. G. Titus.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 .Alfalfa Weevil (Phytonomus variabilis), a beetle of the family Curculionidae, injurious to alfalfa.
The insect measures – mm and has a grayish brown body. The larvae, which reach a length of 9 mm, are green; their sides and back are covered with bristles.
They pupate on plants. Alfalfa weevils are distributed in central and southern Europe, Asia.