Results 141 to 150 of about 1,302 (183)

Evaluation of the impact of sweetpotato weevil (Cylas formicarius) and of the effectiveness of Cylas sex pheromone traps at the farm level in Indonesia

International Journal of Pest Management, 1999
We evaluated the impact of sweetpotato weevil (Cylas formicarius (Fabricius); Coleoptera: Apionidae) and of other direct pests and diseases (rats, Ceratocystis fimbriata, white grubs, root rots and root cracks), and the effectiveness of C. formicarius sex pheromone traps at the farm level in four villages in East and Central Java, Indonesia during 1994-
Elske van de Fliert
exaly   +4 more sources

Within-Root Mortality of Cylas formicarius (Coleoptera: Apionidae) by Entomopathogenic Nematodes

Journal of Economic Entomology, 1993
Within-root mortality of sweetpotato weevil, Cylas formicarius (F.), by six strains of entomopathogenic nematodes in the families Steinernematidae and Heterorhabditidae ( Steinernema carpocapsae \[Weiser\] \[= Neoaplectana carpocapsae, Steinemema Feltiae \] All and Mexican strains; Steinernema feltiae \[Filipjev\] \[= Steinemema bibionis \] N-27 strain;
Richard K Jansson
exaly   +2 more sources

Identification of sex pheromone produced by female sweetpotato weevil,Cylas formicarius elegantulus (Summers)

Journal of Chemical Ecology, 1986
A sex pheromone of the sweetpotato weevil,Cylas formicarius elegantulus (Summers), was obtained from collections of volatiles from virgin females, and pheromone was isolated by means of liquid and gas chromatography. The purification procedure was monitored by quantitative laboratory and field bioassays and the compound was identified as (Z)-3-dodecen ...
James H. Tumlinson, P E Sonnet, R R Heath   +2 more
exaly   +3 more sources

RESISTANCE IN SWEET POTATOES TO THE SWEETPOTATO WEEVIL, CYLAS FORMICARIUS ELEGANTULUS (SUMMERS)1

Journal of Entomological Science, 1985
Fourteen sweet potato [Ipomoea batatas (L.) Lam] cultivars and varieties were examined for resistance to the sweetpotato weevil [Cylas formicarius elegantulus (Summers)] in artificially infested fields in Yoakum, TX. One cultivar W-226, appeared to have a greater level of resistance than the other cultivars examined.
Thurman E. Boswell, Donald R. Paterson, Alfred Jones, Michael A. Mullen   +3 more
openaire   +2 more sources

Cylas formicarius . [Distribution map].

Distribution Maps of Plant Pests, 2005
Abstract A new distribution map is provided for Cylas formicarius (F). (Col., Curculionidae) (Sweet-potato Weevil). Host Plant: Sweet-potato. Information is given on the geographical distribution in ASIA, Bonin Islands, Burma, Cambodia, Ceylon, China, Christmas Island, Cocos-Keeling Island, India ...
null CABI, null EPPO
openaire   +1 more source

Bioactivity of Selected Eco-Friendly Pesticides AgainstCylas formicarius(Coleoptera: Brentidae) [PDF]

Florida Entomologist, 2012
Seven low risk pesticides including 1.2% azadirachtin (Azadirachta indica), extracts from Morinda citrifolia, petroleum oil 97%, Beauveria bassiana strain GHA, mixed essential oils (rosemary oil: 0.25%, peppermint oil: 0.25%, thyme oil: 0.25%, clove oil:
Gadi V.P. Reddy
exaly   +2 more sources

Observations on the Biology of Cylas formicarius Fabricius at Coimbatore

Madras Agricultural Journal, 1959
Cylas, formicarius Fabricius, commonly known as the sweet potato weevil, is a well known cosmopolitan insect, which causes serious damage to sweet potato (Ipomea batatas) both in the field and storage. The loss caused by this pest is very extensive all over the world and in India damage to the extent of 60 to 70% is not uncommon.
openaire   +1 more source

Reproductive Properties of Sweet Potato Weevil, Cylas formicarius (Fabricius) (Coleoptera, Brentidae)

UTTAR PRADESH JOURNAL OF ZOOLOGY, 2023
Sweet potato weevil (SPW), Cylas formicarius is a serious pest of sweet potato causing extensive damage to tubers. The present study investigates the reproductive properties of sweet potato weevil in laboratory conditions. Current investigation revealed that sexual maturity of SPW was attained on 5th Days After Emergence (DAE) as in the case of male ...
Vinod, Anjali, Jayaprakas, C.A
openaire   +2 more sources

Integrated management of sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae)

Pest Management in Horticultural Ecosystems, 2022
Sweet potato weevil, Cylas formicarius (Fabricius) is the most important and serious pest of sweet potato. Being an internal feeder and soil dweller, it's very difficult to manage by a single management practice. Hence, an integrated approach is ideal.
Gouri Shankar Giri, Kaushal Kishor, Vinod Kumar Dubey, Sourav Maji   +3 more
openaire   +1 more source

Diurnal Periodicity of Death-Feigning in Cylas formicarius (Coleoptera: Brentidae)

Journal of Insect Behavior, 2001
Diurnal periodicity of death-feigning behavior, or thanatosis, was found in adults of the sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae). The proportion of death-feigned weevils was significantly lower at night than in the daytime only in males.
openaire   +1 more source