Trap Cropping and Intercropping of Pigeonpea (Cajanus Cajan L. Millsp.) in Pest Management of Cowpea (Vigna Unguiculata L. Walp.) in Southern Benin : Competing Risk and Pest Status in Pod Attack

Atachi, P.; dannon, EA; Rurema, DG

doi:10.4314/asab.v9i1.43226

Cited by 13 publications

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“…The yields obtained are consistent with infestation situations and observed damage rates on the one hand and with the timing of large fluctuations of the main pests such as A. cracivora, M. sjostedti and M. vitrata on the other. According to Atachi et al (2007), damage, yield losses of cowpea due to aphids and thrips are between 20 and 80% when their numbers are very high at the time of flowering. Feeding these insects on cowpea flowers and pods reduces cowpea production.…”

Section: Discussionmentioning

confidence: 99%

Determination of the Critical Period of Phytosanitary Treatment against Cowpea (Vigna unguiculata L. Walp) Pests in Southern Togo

Seth¹,

Kodjo²,

Bakouma³

et al. 2018

ijSciences

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Economically efficient and environmentally friendly technology is essential for sustainable agricultural production. To optimize cowpea production through an economically profitable and environmentally friendly phytosanitary treatment technology, trials were conducted in a station based on Acarius 18 EC at a rate of 1 liter/ha against the main cowpea insect pests. A complete randomized block device with three replications of four objects each with two sub-trials: an early competition (EC) sub-trial and a late competition (LC) sub-trial were adopted. Seed yield and the critical period for phytosanitary treatment have been determined. The best yields were obtained on objects that received the first treatment 28 days after sowing (DAS) (2.13 t/ha on average) for EC and on objects that received the last treatment 42 DAS (2.23 t/ha on average) for LC. Under the conditions of our study, the critical period of phytosanitary treatment against cowpea pests (VITOCO) for optimum yield is then between 28 and 42 DAS.

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Section: Discussionmentioning

confidence: 99%

Determination of the Critical Period of Phytosanitary Treatment against Cowpea (Vigna unguiculata L. Walp) Pests in Southern Togo

Seth¹,

Kodjo²,

Bakouma³

et al. 2018

ijSciences

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“…Ces rendements sont en concordance avec les situations d'infestations et des taux de dégâts observés. Selon Atachi et al (2007), les dommages, les pertes de niébé dues à M. vitrata se situent entre 20 et 80%. L'alimentation de cet insecte sur les fleurs et gousses de niébé diminue la production de niébé.…”

Section: Discussionunclassified

Efficacité comparée des insecticides de natures différentes dans la gestion des insectes ravageurs du niébé au Centre du Bénin

Mehinto¹,

Atachi²,

Elegbede³

et al. 2015

J. App. Bioscience.

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Methodology and results: The current study was performed in three villages of the cotton growing areas of central Benin (Glazoue municipality). Four treatments consisting of 1) unsprayed control, 2) TopbioMaviMNPV mixture, 3) B. bassiana and 4) Decis were arranged in a randomized complete block design with three replicates. Seventy five grams per ha of B. bassiana (isolate Bb 115) conidia were formulated with peanut oil and applied at a volume of 2 litres/ha-1. Virus MaviMNPV suspension was applied at 2.10 9 OB/ha in a formulation containing neem (TopBio).The Decis and TopBio, 1L /ha. The effects of the different pesticides used on cowpea pests populations' densities (M. vitrata, Megalurothrips sjostedti, Clavigralla tomentosicollis) were evaluated as well as their damage of reproductive organs (flowers buds, flowers and pods). Fruiting bodies organs were collected weekly to monitor alive and dead of M. vitrata larvae, and other key cowpea insect pests and their damage on flower budsl, flowers and pods as well. Cowpea grain yield was evaluated. Although, the great variation in their effects, the biopesticides tested have significantly reduced the population density of M. vitrata and of the other insect species as well as damage level. The overall grain yield was improved in treated cowpea compared to the untreated control. In farmers' cowpea fields, pest control by the various pesticides used, was similar with yields of 933.03 ± 8.7Kg / ha obtained in plots treated with B. bassiana. Conclusion and results' applications: These results showed that the biopesticides used in our study can significantly reduce the densities of different target pests. This study suggested the possibilities of the use of biopesticides as alternatives to chemical insecticides in the control of cowpea pests.

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“…The use of pigeonpea leaves to treat various diseases such as malaria corroborates the observations made by Ayenan et al [9] and Zavinon et al [11] in Benin and those of Aiyeloja and Bello [50] and Oladunmoye et al [51] in Nigeria. Also, the use of pigeonpea as weeds control has been reported by several authors in Benin [52,53,5]. However, pigeonpea roots utilization in prevention of snake venom rising has not been reported elsewhere.…”

Section: ] Onmentioning

confidence: 99%

On-farm management and participatory evaluation of pigeonpea (Cajanus cajan [L.] Millspaugh) diversity across the agro-ecological zones of Benin Republic

KINHOEGBE

Djèdatin

Loko

et al. 2020

Preprint

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Background: Pigeonpea is a multipurpose food legume that contributes to food security in Benin. However, its production declined and some landraces are being threatened with disappearance. For establishment of conservation and breeding programs previous ethnobotanical surveys on pigeonpea were done in Benin but restricted to south and central regions. Knowing that pigeonpea is also grown in northern Benin, and that the varieties cultivated in this region can show agronomic performances, it is therefore important to evaluate the diversity of this legume in this region. However, an exhaustive documentation of pigeonpea diversity grown in Benin Republic are necessary for effective breeding and conservation programs. Therefore, this study aimed to document genetic diversity of pigeonpea, across the agro-ecological zones of Benin Republic for its promotion and valorization. Methods: 500 producers of pigeonpea belonging to thirteen sociolinguistic groups were selected through 50 villages. Data were collected using methods and tools of participatory research appraisal. Folk nomenclatures, taxonomy of pigeonpea and seed system were investigated. The distribution and extent of pigeonpea landraces were evaluated using Four Square Analysis method. A comparative analysis of pigeonpea uses categories, production systems, pigeonpea production constraints, famers’ preference criteria and participative evaluation for existing landraces across agro-ecological zones was done. Result: Folk nomenclature and taxonomy were mainly based on seed coat colour and size. Seven pigeonpea use category were recorded including sacrifice, grain processing and fertilization. The results showed that pigeonpea seed system is informal. Based on seed characteristics, fifteen landraces were recorded with seven new landraces. The Sudano-Guinean zone contained the highest number (11) of landraces. The average number of landraces per village was 2.7. A high rate of landraces threatened with disappearance was observed across the ecological zones. Ten constraints are known affecting pigeonpea production in Benin with pests and diseases as the most important in all agro-ecological zones. This study revealed that pigeonpea cultivation is increasing in the Sudanian zone. Varieties to be produced must be selected on the basis of 11 criteria among them precocity and resistance to pests and diseases, in the three ecological zones and adaptability to any type of soil in the Sudanian zone were the most important. The participatory evaluation revealed the existence of a few performing cultivars. Conclusions: Our results show that to implement a pigeonpea genetic conservation program in Benin, it would be necessary to take into account the diversity, production constraints and criteria of varietal preference, which varied according to agro-ecological zones. In situ and ex situ conservation strategies are important to preserve pigeonpea landraces. Morphological and molecular characterizations of identified cultivars are highly recommended to help select suitable varieties for breeding programs.

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Trap Cropping and Intercropping of Pigeonpea (Cajanus Cajan L. Millsp.) in Pest Management of Cowpea (Vigna Unguiculata L. Walp.) in Southern Benin : Competing Risk and Pest Status in Pod Attack

Cited by 13 publications

References 0 publications

Determination of the Critical Period of Phytosanitary Treatment against Cowpea (Vigna unguiculata L. Walp) Pests in Southern Togo

Determination of the Critical Period of Phytosanitary Treatment against Cowpea (Vigna unguiculata L. Walp) Pests in Southern Togo

Efficacité comparée des insecticides de natures différentes dans la gestion des insectes ravageurs du niébé au Centre du Bénin

On-farm management and participatory evaluation of pigeonpea (Cajanus cajan [L.] Millspaugh) diversity across the agro-ecological zones of Benin Republic

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