scholarly journals Evaluation of Local Spices as Biopesticides for the Control of Ootheca mutabilis, Shalbera and Clavigralla tomentosicollis (Stal.) on Cultivated Cowpea (Vigna unguiculata L.) in Nigeria

2012 ◽  
Vol 4 (10) ◽  
Author(s):  
Ime O. Udo ◽  
Edna A. Akpan
Keyword(s):  
Vigna Unguiculata ◽  
Clavigralla Tomentosicollis ◽  
Ootheca Mutabilis

Ootheca mutabilis. [Distribution map].

1987 ◽  
Author(s):  
Keyword(s):  
South Africa ◽  
Mosaic Virus ◽  
Sierra Leone ◽  
Vigna Unguiculata ◽  
Cajanus Cajan ◽  
Leaf Beetle ◽  
Distribution Map ◽  
Brown Leaf ◽  
New Distribution ◽  
Ootheca Mutabilis

Abstract A new distribution map is provided for Ootheca mutabilis (Sahlberg) [Coleoptera: Chrysomelidae, Galerucinae] Brown leaf beetle, cowpea leaf beetle. Attacks various Leguminosae including Vigna unguiculata, Cajanus cajan, Canavalia ensiformis, soyabean & groundnut, vector of bean southern mosaic virus and cowpea mottle virus. Information is given on the geographical distribution in AFRICA, Angola, Benin, Cameroon, Ghana, Guinea, Kenya, Liberia, Malawi, Mozambique, Nigeria, Rwanda, Senegal, Sierra Leone, South Africa, Sudan, Tanzania, Zaire, Zambia, Zimbabwe.

Effect of Weeds on Pre-flowering Insect Infestation and Seed Yield of Cowpea (Vigna unguiculata) in a Rainforest Area of Nigeria

1989 ◽  
Vol 25 (3) ◽  
pp. 343-347 ◽  
Author(s):  
Tom I. Ofuya
Keyword(s):  
Seed Yield ◽  
Vigna Unguiculata ◽  
Insect Infestation ◽  
Insect Populations ◽  
Empoasca Dolichi ◽  
Ootheca Mutabilis

SUMMARYPre-flowering insect infestation of cowpea, Vigna unguiculata, was monitored in weedy and weed-free plots in 1986 and 1987 in Akure, Nigeria. Weediness generally reduced infestations of both the leafhopper, Empoasca dolichi, and the flea beatle, Ootheca mutabilis. However, seed yield was reduced in the weedy plots despite heavier pre-flowering insect populations in the plots kept weed-free.

A laboratory procedure for rearing the cowpea coreid, Clavigralla tomentosicollis Stål (Hemiptera), using dry cowpea seeds

1989 ◽  
Vol 79 (2) ◽  
pp. 275-281 ◽  
Author(s):  
Louis E. N. Jackai
Keyword(s):  
Vigna Unguiculata ◽  
Laboratory Procedure ◽  
Nymphal Development ◽  
Rearing Method ◽  
Clavigralla Tomentosicollis ◽  
Cowpea Seeds

AbstractA procedure for rearing Clavigralla tomentosicollis Stål on dry seeds of cowpea (Vigna unguiculata) is described. Dry seeds produced results for nymphal development and adult oviposition similar to those from fresh pods and fresh seeds, which are more frequently fed on by the insect in nature. The rearing method described here is much more efficient in terms of time and manpower requirements than the widely used method using fresh pods. Furthermore, the dry-seed procedure may be adapted for rearing other hemipteran pod pests of legumes.

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.

Observations on Insect Infestation and Damage in Cowpea (Vigna Unguiculata) Intercropped With Tomato (Lycopersicon Esculentum) in a Rain Forest Area of Nigeria

1991 ◽  
Vol 27 (4) ◽  
pp. 407-412 ◽  
Author(s):  
T. I. Ofuya
Keyword(s):  
Lycopersicon Esculentum ◽  
Seed Yield ◽  
Vigna Unguiculata ◽  
Rain Forest ◽  
Heliothis Armigera ◽  
Maruca Testulalis ◽  
Insect Infestation ◽  
Pod Sucking Bugs ◽  
Empoasca Dolichi ◽  
Ootheca Mutabilis

SUMMARYInsect infestation and damage in cowpea (Vigna unguiculala), planted sole or intercropped with tomato (Lycopersicon esculentum) was monitored in 1987 and 1988 in Akure, Nigeria. Infestation of cowpea byEmpoasca dolichiwas significantly reduced by intercropping with tomato in both years, except in the early season of 1988. Infestation of cowpea byOotheca mutabilis, Aphis craccivora, Megalurothrips sjosledti and Maruca testulaliswas not affected by intercropping with tomato in either year. Damage by pod-sucking bugs and Heliothis armigera was significantly higher in sole cowpea than in cowpea intercropped with tomato, in both years. Sole cowpea had a significantly lower seed yield than cowpea intercropped with tomato.Observaciones en cuanto a la infestación de insectos y daños en el caupí(Vigna unguiculata)sembrado en forma simultánea con tomate(Lycopersicon esculentum)en una zona de bosque tropical en Nigeria

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