scholarly journals Influence of Host Plants on the Development of <i>Caryedon serratus</i> Olivier (Coleoptera: Chrysomelidae, Bruchinae), Insect Pest of Groundnut Stocks in Burkina Faso

2016 ◽  
Vol 04 (05) ◽  
pp. 279-292 ◽  
Author(s):  
Issoufou Ouedraogo ◽  
Sacamba Aimé Omer Hema ◽  
Wendgoundi Guenda ◽  
Dona Dakouo
Keyword(s):  
Burkina Faso ◽  
Host Plants ◽  
Insect Pest ◽  
Caryedon Serratus

scholarly journals Distribution et dégâts associés au thrips de l’oignon, Thrips tabaci L. (Thysanoptera : Thripidae) en fonction de la zone agro-climatique au Burkina Faso

2020 ◽  
Vol 14 (6) ◽  
pp. 2037-2048
Author(s):  
Abdoulaye Savadogo ◽  
Boniface Babo Bakouan ◽  
Mathieu Wendnéyidé Sawadogo ◽  
Karim Nébié ◽  
Rémy Dabiré ◽  
...  
Keyword(s):  
Burkina Faso ◽  
Crop Production ◽  
Insect Pest ◽  
Average Density ◽  
Thrips Tabaci ◽  
Annual Rainfall ◽  
Onion Thrips ◽  
Average Annual Temperature ◽  
Average Annual Rainfall ◽  
Plateau Central

L’oignon est le premier légume produit au Burkina Faso. Thrips tabaci constitue son principal insecte ravageur. Ce travail avait pour objectif  d’évaluer la distribution, l’incidence et la sévérité des attaques de T. tabaci sur l’oignon. L’étude a été réalisée dans trois bassins de production  représentatifs de deux zones agroécologiques du Burkina Faso : la zone sahélienne caractérisée par une pluviosité moyenne annuelle inférieure à 600 mm et une température moyenne annuelle de 35 °C ; contre une pluviosité moyenne annuelle comprise entre 600 et 900 mm et une  température moyenne annuelle de 33 °C pour la zone nord soudanienne Nous avons réalisé des prospections dans 45 parcelles paysannes dans les zones de production ciblées. Des plantes d’oignon ont été prélevées dans trois quadrats posés sur une des diagonales de chaque parcelle, et les thrips trouvés sur chaque plante de chaque quadrat comptés. Tous les plants à l’intérieur du quadrat ont été donc observés. La densité moyenne la plus élevée (216 ±385 thrips au m2) a été observée dans la région du Nord tandis que l’incidence moyenne la plus élevée (95,91±8,92%) a été observée dans la Boucle du Mouhoun. La plus faible sévérité (19,29±13,27%) a été enregistrée dans le Plateau central. Cette étude est un premier pas vers le développement de stratégies alternatives de lutte contre les parasites dans le cadre de systèmes de production végétale durables à l’aide de bonnes pratiques agricoles et de l’utilisation des pesticides biologiques.Mots clés : Oignon, Thrips tabaci, incidence, sévérité, répartition, Burkina Faso.   English Title: Distribution and damage associated with the onion thrips, Thrips tabaci L. (Thysanoptera: Thripidae) according to the agro-climatic zone in Burkina FasoOnion is the first vegetable produced in Burkina Faso. Thrips tabaci is its main insect pest. We assessed the distribution, incidence and severity of T. tabaci attacks on onion in three-production areas representative of two agroecological zones of Burkina Faso: the the Sahelian zone characterized by an average annual rainfall of less than 600 mm and an average annual temperature of 35 °C; compared to an average annual rainfall of between 600 and 900 mm and an average annual temperature of 33 °C for the northern Sudanian zone. We carried out surveys in 45 farmer plots in the targeted production zones. Thus, onion plants were taken from three quadrats placed on one of the diagonals of each plot, and the thrips found on each plant were counted. All plants within the quadrat were therefore observed. The highest average density (216±385 thrips per m²) was observed in the North while the highest average incidence (95.91±8.92%) was observed in the Boucle du Mouhoun. The lowest severity (19.29±13.27%) was recorded in the Plateau central region. This study is a first step towards the development of alternative pest control strategies within sustainable crop production systems using good agricultural practices and the use of biopesticides.Keywords: Onion, Thrips tabaci, incidence, severity, distribution, Burkina Faso.

Evaluating an insect pest management system in an irrigated rice environment

1995 ◽  
Vol 16 (1) ◽  
pp. 93-101
Author(s):  
D. Dakouo ◽  
S. Nacro ◽  
R. Post ◽  
Y. Traoré ◽  
S. Nokoe ◽  
...  
Keyword(s):  
Burkina Faso ◽  
Integrated Pest Management ◽  
Pest Management ◽  
Management System ◽  
Insect Pest ◽  
Insect Damage ◽  
Insect Pest Management ◽  
Irrigated Rice ◽  
Considerable Advantage ◽  
Application Methods

AbstractThe efficiency and profitability of an integrated pest management system consisting of a phytosanitary survey and threshold interventions (based on levels of insect damage) was tested at the Vallée du Kou irrigated rice scheme in Burkina Faso, for two consecutive crop seasons in 1987. There was a considerable advantage in cost, number of insecticidal applications and yield of a threshold intervention-based system over arbitrary or routine insecticidal application methods. The proposed method is considered to be environmentally friendly.

Oviposition preference and levels Adaptation of Caryedon serratus Olivier (Coleoptera, Bruchidae) hosts plant strain to groundnut (Arachis hypogaea, Fabaceae)

2011 ◽  
Vol 1 (1) ◽  
pp. 48-55
Author(s):  
Mbacké Sembène Sembène ◽  
Awa Ndiaye ◽  
Ali Doumma ◽  
Toffène Diome ◽  
Assane Ndong ◽  
...  
Keyword(s):  
Site Selection ◽  
Host Selection ◽  
Host Plants ◽  
Oviposition Preference ◽  
The Other ◽  
Oviposition Site Selection ◽  
Selection Principle ◽  
Caryedon Serratus ◽  
Wild Strains ◽  
Wild Hosts

The objective of the present study was to assess oviposition site selection by females of various groundnut seed‐beetle strains, Caryedon serratus, bred from different hosts. Tests of choice on pods of various host plants were initially made. Egg distributions among hosts were compared. The levels of adaptation of wild strains on groundnut and the capacities of development of \"groundnut\" strain on the seeds of the wild hosts were also tested. Results indicated that strains may be considered as developing according to Hopkins\' host selection principle. Results obtained from the levels of adaptation tests revealed that the various strains were as identical as for their intrinsic possibilities of development on the groundnut. The parameter weight of the adults indicated that the “Bauhinia” strain was adapted intrinsically less well than the other strains to the development on the groundnut. The fecundity rate revealed that the various strains were identical as for their intrinsic possibilities of development on the groundnut but “Bauhinia” seemed less good adapted to the groundnut. The passage of the groundnut strain to the wild hosts is possible but, raised on wild seeds; this one behaves although on groundnut.

scholarly journals Effects of Volatiles from Clavigralla tomentosicollis Stål. (Hemiptera: Coreidae) Adults on the Host Location Behavior of the Egg Parasitoid Gryon fulviventre (Crawford) (Hymenoptera: Scelionidae)

2019 ◽  
Vol 11 ◽  
pp. 117954331882525 ◽  
Author(s):  
Apolline Sanou ◽  
Fousséni Traoré ◽  
Malick Niango Ba ◽  
Clémentine L Dabiré-Binso ◽  
Barry R Pittendrigh ◽  
...  
Keyword(s):  
Biological Control ◽  
Burkina Faso ◽  
Vigna Unguiculata ◽  
Host Location ◽  
Biological Control Agent ◽  
Insect Pest ◽  
Egg Parasitoid ◽  
Control Agent ◽  
Host Searching ◽  
Clavigralla Tomentosicollis

The egg parasitoid Gryon fulviventre is a potential biological control agent of Clavigralla tomentosicollis, a coreid pod-sucking pest of Vigna unguiculata. The host location behavior of naive parasitoid females was studied using a four-armed olfactometer. Two strains of G. fulviventre parasitoids from Burkina Faso and Benin were exposed to odors provided by healthy and infested pods as well as C. tomentosicollis females and males. The time spent in each odor zone was recorded to determine the preference of parasitoid females. Results show that odors from healthy pods, infested pods, and pest females did not attract the parasitoid. However, a significantly attractive response of both strains of G. fulviventre was recorded in the presence of volatiles from males of C. tomentosicollis. Moreover, experiments testing G. fulviventre females’ behavior when simultaneously exposed to volatiles from cowpea pods (healthy and infested) and increasing numbers of C. tomentosicollis males revealed a significantly higher attraction of parasitoid females of both strains by volatiles from ten males of C. tomentosicollis. The results suggest that the males of the insect pest emit a pheromone used as kairomone by parasitoids to locate their host. The conditions determining this attractiveness at field level and its impact on host-searching efficiency are discussed.

The potential for manipulating crop–pest–natural enemy interactions for improved insect pest management

1998 ◽  
Vol 88 (5) ◽  
pp. 493-501 ◽  
Author(s):  
R.H.J. Verkerk ◽  
S.R. Leather ◽  
D.J. Wright
Keyword(s):  
Host Plants ◽  
Insect Pests ◽  
Insect Pest ◽  
Insect Pest Management ◽  
Detailed Understanding ◽  
Crop Pest ◽  
Integrated Crop Management ◽  
Biological Methods ◽  
Selective Insecticides ◽  
Crop Environment

AbstractThis review identifies key ways in which manipulations of the crop environment based on detailed understanding of tritrophic interactions can contribute to improvements in the control of insect pests. Such approaches are likely to be of particular benefit against those pests, notably certain species of Lepidoptera and aphid, which are difficult to control with insecticides because of insecticide resistance or suppression of natural enemies. Particular attention is given to the compatibility (or otherwise) of partial plant resistance and biological control, citing examples which support contrasting tritrophic theories. Other areas considered and supported with examples include the use or effects of allelochemicals, refugia, intercropping, crop backgrounds, fertilization regimes, parasitoid conditioning (by host plants) and transgenic crops. Examples of manipulations involving use of selective insecticides which show compatibility with biological methods are also included owing to their possible suitability in integrated crop management programmes.

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