Ecology and Management of Sweet Potato Insects

Chalfant, Richard B.; Jansson, Richard K.; Seal, Dakshina R.; Schalk, J. M.

doi:10.1146/annurev.en.35.010190.001105

Cited by 153 publications

(103 citation statements)

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“…Previous reviews of wireworm on potato (Radcliffe et al, 1991;Jansson & Seal, 1994) have had a heavy bias towards North American cropping systems, re¯ecting the wide-ranging work done there on wireworms on potato, sweet potato (e.g. Chalfant et al, 1990) and grain crops. The purpose of this review is to draw together and interpret relevant existing work on the biology and management of wireworms within the context of potato production in Europe, with particular reference to the U.K. As wireworms are very polyphagous, this crop-based review is selective rather than exhaustive.…”

Section: Introductionmentioning

confidence: 99%

The biology and management of wireworms (Agriotes spp.) on potato with particular reference to the U.K.

Parker

Howard

2001

Agri and Forest Entomology

204

202

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1 This paper reviews and interprets relevant work on the biology and management of wireworms (Agriotes spp.) within the context of potato production in Europe, with particular reference to the U.K. Although the review concentrates on Agriotes spp., the extensive world literature on other Elateridae of economic importance is also drawn upon. 2 Possible reasons for the apparent increase in the importance of wireworms on the potato crop are discussed, followed by a review of wireworm biology, risk assessment techniques (soil sampling, bait trapping and adult pheromone trapping), crop damage, and cultural, biological and chemical control methods. 3 It is clear that the process of site risk assessment followed by appropriate control measures (usually insecticide use) will remain the mainstay of wireworm management programmes. However, there is considerable scope for adopting new risk assessment techniques, such as pheromone trapping of adult beetles. 4 These control measures will need to be underpinned by a greater understanding of wireworm biology, particularly adult dispersal. Factors affecting the initiation and maintenance of wireworm populations in individual ®elds also require further study. The current use of insecticides could also be optimized by a better appreciation of the interactions between insecticide use, potato variety choice and harvest dates.

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Section: Introductionmentioning

confidence: 99%

The biology and management of wireworms (Agriotes spp.) on potato with particular reference to the U.K.

Parker

Howard

2001

Agri and Forest Entomology

204

202

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“…The data is collected in a 0.2ha plot that is selected in the middle of the selected farmer's field. Insect species were identified in the field following published information and guides (Ames et al 1996;Anyanga et al 2013;Bassey 2012;Chalfant et al 1990;Downham et al 2001;Jackson and Bohac 2006;Jackson et al 2003;Korada et al 2010;Nderitu et al 2009;Talekar and Cheng 1987).…”

Section: Knowledge Of Production Constraints Pest Species and Climamentioning

confidence: 99%

Interaction of the fluctuation of the population density of sweet potato pests with changes in farming practices, climate and physical environments: A 11-year preliminary observation from South-Kivu Province, Eastern DRCongo

Munyuli¹,

Kalimba²,

Mulangane³

et al. 2017

Open Agriculture

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Open Agriculture. 2017; 2: 495-530 determined which climatic factors may be used as best predictors of the different status of pest populations (declines, outbreaks). Farmer based data was obtained using a semi structured questionnaire administered to several of farmers. Population dynamics of sweetpotato pests were monitored year-round from 2005 to 2015 in South Kivu province, eastern DRCongo. Field monitoring (visual counts) observations (population dynamic of different soil-dwelling and surface dwelling arthropods visiting sweetpotato fields) combined with a survey of farmers' knowledge on sweetpotato pests and their practices in the management of these pests in SouthKivu Province were conducted for 11 years. Monitoring (with field observations and counts) was carried out in fields under different farming practices (monocropping and inter-cropping) in sites located at different altitudes. Similarly, data for climatic factors, for the same period, were collected from Lwiro Research center. Regression models were applied to understand the linkages between environmental factors (rainfall and temperature) and pest population dynamics. The results indicated that different varieties (local and improved ones) of sweetpotato are grown three times (3 seasons) per annum under various cropping systems (sole crop, mixed crops) in various agroecological zones at different altitudes. Various arthropod species visit the crop at its different stages of development including classically known pests (Acraea acerata, Cylas spp.) or as vectors of diseases (Bemisi tabaci, Aphis spp.). The results indicated a high fluctuation in the population density of different pests. The change in the population dynamics were characterized by gradual increase in the populations during rainy seasons followed by decline during dry seasons (hot months of the year). Significant (P<0.05) https://doi.org/10.1515/opag-2017-0054 received January 2, 2016; accepted March 19, 2017 Abstract: Sweetpotato is a major food security crop grown in eastern Democratic Republic of Congo. Its production is however limited due to high prevalence of pests and diseases among other abiotic and biotic factors. A study was designed to aid understanding the knowledge of farmers about pests and their perception about climate variability impacts, as well as documenting the phenology of sweetpotato pests (pest population dynamics) in relationship with weather factors. The paper aimed at differences were observed in the population dynamics between sole sweetpotato and mixed sweetpotato intercropping. There was a synchronization of multiple pest generations (biannual, multiannual cycles of reproduction) built up with early rains. The results indicate that rainfall and maximum temperature were critical to the survival and population built up of the pest population. High rainfall in the previous months caused increases in the population density in the subsequent months within a year. The population dynamic (seasonal occurrence) over months and years was likely to coincide ...

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“…Apesar de não serem comuns altos níveis de danos em culturas bem conduzidas, os danos podem ser elevados, caso o manejo não seja adequado chegando a perdas de 60% a 100% da produção. Uma das pragas responsáveis por essas perdas é a broca da batatadoce Euscepes postfasciatus Fairmaire, considerada a segunda praga mais importante no mundo, e a primeira na ilha de Barbados (Chalfant et al 1990), no Japão (Shimoji & Kohama 1996) e no Brasil (Seixas & Amaral 1952, Murayama 1987.…”

Section: Palavras-chave: Insecta Ipomoea Batatas Broca Da Batata-doceunclassified

“…PALAVRAS-CHAVE: Insecta, Ipomoea batatas, broca da batata-doce A batata-doce Ipomoea batatas (L.) Lamark é uma cultura de grande importância econômica e social. Contudo, tem-se registrado cerca de 270 espécies de insetos e 17 espécies de ácaros atacando essa cultura no campo e no armazém, em todo o mundo (Chalfant et al 1990). Apesar de não serem comuns altos níveis de danos em culturas bem conduzidas, os danos podem ser elevados, caso o manejo não seja adequado chegando a perdas de 60% a 100% da produção.…”

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Resistência de cultivares de batata-doce a Euscepes postfasciatus Fairmaire (Coleoptera: Curculionidae)

Wanderley¹,

Júnior²,

Wanderley³

2004

Neotrop. Entomol.

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-Forty sweet potato cultivars Ipomoea batatas (L.) Lamarck were studied in relation to their resistance to Euscepes postfasciatus Fairmaire. Firstly the attractivity and non-preference for feeding and oviposition on stems and roots were evaluated. From the results, eight resistant and two susceptible cultivars were selected. Secondly roots from selected cultivars were used to study the sweet potato resistance to E. postfasciatus. Sweet potato stems and roots were offered to adults of E. postfasciatus in arenas with free choice tests with six replications. Evaluations were carried out after 5, 10, 30, 60 min, 3h and 24h. The better length of stems, among those tested was 35 cm. Sweet potato weevil adults when released in arenas, quickly attached the more attractive plants, preferring the thick stems or leaves insertion. The cultivars with less attractive stems were: Rocha da Paz, Mineira, Lagartixa and Bom Nome. Roots from Lagartixa and Bom Nome cultivars were less damaged. These cultivars and Caboatã were not preferred to oviposition. Roots and stems from Granfina and UFRPE cultivars were more attractive and more damaged. These cultivars must be avoided while Lagartixa and Bom Nome are recommended to be cultivated in areas with the sweet potato weevil.KEY WORDS: Insecta, Ipomoea batatas, west Indian sweet potato weevil RESUMO -Foram estudadas 40 cultivares de batata-doce Ipomoea batatas (L.) Lamarck, objetivando avaliar a resistência ao ataque da broca Euscepes postfasciatus Fairmaire. Numa primeira fase da pesquisa foi medida a atratividade, a não-preferência para alimentação e oviposição em ramas e raízes. Dos resultados foram escolhidas oito cultivares resistentes e duas suscetíveis. Numa segunda fase utilizaramse raízes das cultivares escolhidas para estudar a resistência a E. postfasciatus. Ramas e raízes foram oferecidas a adultos da broca em arenas com livre chance de escolha, com seis repetições. As avaliações foram feitas aos 5, 10, 30, 60 min., 3h e 24h após a liberação. O melhor tamanho de rama, entre os testados, a ser utilizado foi o de 35 cm. Os adultos da broca ao serem liberados nas arenas, dirigiram-se rapidamente para o material e atacaram as mais atrativas, prioritariamente nos ramos mais grossos ou na inserção das folhas. As cultivares com ramas menos atrativas foram: Rocha da Paz, Mineira, Lagartixa e Bom Nome, sendo que os tubérculos das cultivares Lagartixa e Bom Nome também foram menos danificados e juntamente com Caboatã, não preferidas para oviposição. As raízes e ramas das cultivares Granfina e UFRPE foram as mais atrativas e as mais danificadas portanto devem ser evitadas, enquanto que as cultivares Lagartixa e Bom Nome devem ser recomendadas pelo seu melhore desempenho. PALAVRAS-CHAVE: Insecta, Ipomoea batatas, broca da batata-doce A batata-doce Ipomoea batatas (L.) Lamark é uma cultura de grande importância econômica e social. Contudo, tem-se registrado cerca de 270 espécies de insetos e 17 espécies de ácaros atacando essa cultura no campo e no armazém, em todo o mundo (Cha...

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Ecology and Management of Sweet Potato Insects

Cited by 153 publications

References 2 publications

The biology and management of wireworms (Agriotes spp.) on potato with particular reference to the U.K.

The biology and management of wireworms (Agriotes spp.) on potato with particular reference to the U.K.

Interaction of the fluctuation of the population density of sweet potato pests with changes in farming practices, climate and physical environments: A 11-year preliminary observation from South-Kivu Province, Eastern DRCongo

Resistência de cultivares de batata-doce a Euscepes postfasciatus Fairmaire (Coleoptera: Curculionidae)

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