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1 edition of biology of the sweet potato weevil found in the catalog.

biology of the sweet potato weevil

biology of the sweet potato weevil

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Published by Louisiana State University and Agricultural and Mechanical College, Agricultural Experiment Station in [Baton Rouge, La.] .
Written in English

    Subjects:
  • Sweet potatoes -- Diseases and pests.

  • Edition Notes

    Bibliography: p. 30.

    Other titlesSweet potato weevil.
    Statementby K.L. Cockerham ... [et al.].
    SeriesLouisiana bulletin -- no. 483.
    ContributionsCockerham, K. L. 1893-
    The Physical Object
    Pagination30 p. :
    Number of Pages30
    ID Numbers
    Open LibraryOL15567004M

    Are sweet potato weevils differentially attracted to certain colors? Ann. Entomol. Soc. Am. , – (). Cockerham K. L. et al. The biology of the sweet potato weevil. Louisiana Agricultural Experiment Station Technical Bulletin , 30 (). Chi H. & Liu H. Two new methods for the study of insect population ecology. Bull. Inst. The full lifecycle takes just over a month. The adult weevils feed on the leaves, vines and storage roots, but do little damage. On the storage roots they make small shallow pits as they feed (Photo 7). Impact. Sweetpotato weevil is considered to be the most serious pest of sweet potato, with reports of losses ranging from five to more than 80%.

    The West Indian sweet potato weevil, Euscepes postfasciatus (Fairmaire) is the major insect pest of sweet potatoes in Barbados. All immature stages occur within the tuber or stem. Eggs are laid singly in punctures just below the epidermis, larvae move inward as they feed and the pupae are produced within larval chambers. The developmental period from egg to adult takes 29 days. Sweet potato is an important food crop that is grown widely in tropical and subtropical regions. Sweet potato weevil is the most disastrous pest affecting sweet potato plantations, causing millions of dollars losses annually. An effective integrated pest management (IPM) method will help to prevent economic losses, and it is crucial to understand the factors that contribute to weevil.

      Sweet potato weevil is difficult to control effectively, even with the use of insecticides. However, farmers could prevent or minimise the damage through a number of cultural, biological and chemical control methods. Cultural methods. Crop rotation – rotating sweet potato with other unrelated crops will be helpful to reduce weevil population. The “ant” might be the sweet potato weevil (it looks like an ant) and digs into the tubers (filling crevices with fecal matter—big yuck!) creating bacteria and decay. There are other sweet potato pests, too—banded cucumber beetle (yes, “cucumber”), wireworms, silverleaf whitefly but they do .


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Biology of the sweet potato weevil Download PDF EPUB FB2

Sweetpotato weevil is the most serious pest of sweet potato, not only in the United States, but around the world. It causes damage in the field, in storage, and is of quarantine significance.

It is inherently of interest to entomologists due to its strikingly colorful appearance and extremely long rostrum (beak). Introduction. The African sweet potato weevil (Cylas puncticollis) is one of the most important pests of sweet potato in tropical Africa, notably Uganda, Rwanda, Kenya and Cameroon.

Cylas brunneus is known from West and Central Africa and some countries in East Africa (Rwanda, Burundi and Kenya). These two species are found together attacking sweet potatoes in East and West Africa (Hill, ).

Louisiana State University LSU Digital Commons LSU Agricultural Experiment Station Reports LSU AgCenter The biology of the sweet potato weevil. Cylas formicarius, the sweet potato weevil, is a species of sweet potato weevil in the beetle family is found in Africa, Australia, the Caribbean, Europe & Northern Asia (excluding China), Central America, North America, Oceania, South America, Southern Asia, Class: Insecta.

Cylas formicarius occurred as a serious pest of sweet potato and was distributed throughout the growing areas of Sangli, Satara and Kolhapur districts in Maharashtra, India. The losses caused to edible tubers were %.

The weevil was found to feed and breed on perennial weeds from Ipomoea and Convolvulus in the off-season.

The main source of spread was through planting by: 2. The sweet potato weevil has a global distribution, which means that regardless of where in the world you are from, this pest can be a problem. The adults are often feeding on the lower surface of the leaf.

Most of them are active during the night, which makes it more difficult to detect their presence. It biology of the sweet potato weevil book most destructive during the larval.

The sweet potato weevil, Cylas formicarius elegantulus (Coleoptera, Curculionidae), is a major pest of sweet potato in Cuba. A study was made of the insect biology at different temperatures and relative humidities (RH). At 30degC and 72% RH, the life-cycle lasted days, with an incubation period of days, larval period of days, pupal period of days and pre-oviposition period.

Rajamma P. Biology and bionomics of sweet potato weevil Cylas formicarius Fabr. Biol Bionomics Sweet Potato Weevil Cylas Formicarius Fabr. ; Sutherland JA.

Damage by Cylas formicarius Fab. to sweet potato vines and tubers, and the effect of infestations on total yield in Papua New Guinea. Int J Pest Manag. ; Insect pests of sweetpotato are best controlled by integrated pest management (IPM) approaches.

The sweetpotato weevil, Cylas formicarius, is the most important worldwide pest, however in some Caribbean nations, the West Indian sweetpotato weevil, Euscepes postfasciatus, is the predominant species.

Wireworms, cucumber beetles, white grubs, flea beetles, and various foliar pests also may occur. The biology of sweet potato weevil was studied in Awassa and Nazreth Research Centers. The weevil required 30 and days to complete its life cycle in Awassa and Nazreth, respectively.

It was also reported that the weevil could complete nine generations. Sweet potato weevil control was acceptable in a field planted away from a weevil-infested field, whereas the tubers were heavily infested when the fields were adjacent to each other.

Intercropping Little research information is available on this approach for the management of sweet potato weevil. In one experiment in Taiwan, sweet potato was. Centre for Food Biology & Environment Studies; Abstract.

Sweet potato weevil Cylas formicarius (Fab.) is a serious insect pest of sweet potato worldwide. The weevil can be managed by Integrated. Biology; Published ; DOI: / Biology and management of the West Indian sweet potato weevil, Euscepes postfasciatus. @inproceedings{RamanBiologyAM, title={Biology and management of the West Indian sweet potato weevil, Euscepes postfasciatus.}, author={Karthik V.

Raman}, year={} }. These sweet potato accessions and CNPHCNPHCNPH and CNPHwere the most promising sources of resistance against the West Indian sweet potato weevil because they. Sweet potato, Ipomoea batatas (L.) Lam., is the seventh most important food crop world-wide.

Of all root and tuber crops, it is second in importance to the white potato, Solanum tuberosum L. Despite its importance globally, sweet potato pest management has not received the research attention it deserves. The present book draws on the work of resear.

Biology and bionomics of sweet potato weevil Cylas formicarius Fabr. In: Goel SC, ed. Insect ecology and resource management Sanatan Dharm College Muzaffarnagar India, Rajamma P, Padmaja G, Pests of sweet potato - varietal resistance, bionomics and control. Annual Progress ReportTrivandrum, India: Central Tuber Crops.

A review of the biology and control of sweet potato weevil Cylas formicarius (Fabr.) Tropical Pest Management Sutherland, J.A. A review of the biology and control of sweetpotato weevil Cylas formicarius (Fab.) Tropical Pest Management Talekar, N.S.

How to control sweetpotato weevil: A practical IPM approach. Species composition of sweet potato weevils (Cylas spp) on two sweet potato varieties was determined in the southern parts of the country. One species, Cylas puncticollis Boh. was found to be present in the southern part of Ghana. Studies on the biology of Cylas puncticollis were evaluated on two varieties, red and white.

The adult weevils and eggs are easily overlooked in the field. The presence of purple to black frass, about 7 mm in diameter, is a sign of an abundance of rough sweetpotato weevils. Management. The biology of the weevil makes it a difficult insect to control.

Biological control. The pathogenic fungus Beauveria sp. was observed on adults in the. Basavaprabhu L. Patil, in Reference Module in Life Sciences, Sweet Potato Viral Diseases. Sweet potato (Ipomoea batatas) is cultivated in both tropical and warm temperate regions and is the seventh most important food crop in terms ofglobally sweet potato was cultivated in an area of 9 mHa, with a total production of mt, with China as the leading producer.

Yield losses can occur if heavy defoliation takes place when the crop is young. But, if the young plants are healthy and growing well, they can recover. However, damage to the leaves may delay harvest, increasing the likelihood of attack by the sweet potato weevil.evaluation of some sweet potato varieties for susceptibility to the weevil, cylas spp.

(coleoptera: brentidae). by. medetissi adom () (hons) crop science, universite de lome (togo).Common Name: Sweetpotato weevil Scientific Name: Cyclas formicarius elegantulus (Summers) Order: Coleoptera Description: The adult is about 1/4 inch long, shiny and slender bodied for a weevil, appearing almost ant-like.

The middle of the body and the legs are red and the rest of the body is are elongate but slightly C-shaped in appearance, legless and dirty white to gray in.