Agrodiversite, gestion paysanne et importance de Dioscorea praehensilis Benth. Ans la zone subhumide du Togo

Pitalounani, Wembou Esso-Nan; Dourma, Marra; Wala, Kpérkouma; Woegan, Yao Agbélessessi; Gbogbo, Apeti Koffi; Batawila, Komlan; Dansi, Alexandre; Tozo, Koffi; Akpagana, Koffi

doi:10.18697/ajfand.79.15930

Cited by 8 publications

(9 citation statements)

References 11 publications

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“…On the other hand, Bas-Uélé province is located in the transition zone (partly in uenced by the Savannah). Increase in the diversity of Dioscorea species existing in the forest has also been reported by [31], [32] in Togo and [33] in cultivated species in Ghana. The closeness to the Congo river is an identi cation marker popularly used by the Congolese to identify areas where yams are cultivated or found in the country.…”

Section: Farmers' Preference Criteria For Yam Selection and Utilization In Dr Congomentioning

confidence: 62%

“…The in uence of tuber quality on the adoption and abandonment of yams has also been reported in many studies. For example, It was reported as a contributing factor to loss of yam genetic resources [35] as well abandonment of bush yam [31] in Togo.…”

Section: Constraints To Yam (Dioscorea Spp) Production and Productivity In Dr Congomentioning

confidence: 99%

“…Especially non-yam producers and those who have abandoned yam for other crops. Good tuber quality was also suggested to enhance the marketability and cultivation of yams [31]. A rapid method for breeding for improvement in tuber quality of yams is the use of Near Infrared Re ectance Spectrophotometry (NIRS).…”

Section: Yam Cultivation Cultural Practices and Farmers' Preference Criterial For Selection And Utilization Of Yams In Dr Congomentioning

confidence: 99%

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Diversity, trait preferences, management and utilization of yams landraces (Dioscorea species): an orphan crop in DR Congo

Adejumobi¹,

Agre²,

Anautshu

et al. 2021

Preprint

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BackgroundYam ( Dioscorea spp .) is cultivated in many villages of DR Congo as a means to sustain food security and alleviate poverty. However, the extent of the existing diversity has not been studied in details thus, considered as an orphan.MethodologyA survey covering 540 farmers in 54 villages was conducted in six major yam growing territories covering three provinces in DR Congo to investigate the diversity, management and utilization of yam landraces using pre-elaborate questionnaires.ResultsSubject to synonymy, a total of 67 landraces clones from five different species were recorded. Farmers’ challenges limiting yam production were poor tuber qualities (69%), harvest pest attack (7%), difficulty in harvesting (6%), poor soil status (6%). The overall diversity was moderate among the recorded yam germplasm maintained at the household level (1.32) and variability exist in diversity amongst the territories and provinces. Farmers’ in territories of Tshopo and Mongala provinces maintained higher level of germplasm diversity (2.79 and 2.77) compared to the farmers in territories of Bas-Uélé (1.67). Some yam landraces had limited abundance and distribution due to loss of production interest in many villages attributable to poisons contained hence, resulting in possible extinction. Farmers’ most preferred seed source for cultivation were backyard (43%) and exchange with neighboring farmers (31%) with the objective of meeting food security and generating income. In villages where yam production is expanding, farmers are relying on landraces with good tuber qualities and high yield even though they are late maturing.ConclusionThis study revealed the knowledge of yam genetic diversity, constraints to production and farmers’ preferences criteria as a guide for collection and conservation of yam genetic resources for yam improvement intervention.

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Section: Farmers' Preference Criteria For Yam Selection and Utilization In Dr Congomentioning

confidence: 62%

Section: Constraints To Yam (Dioscorea Spp) Production and Productivity In Dr Congomentioning

confidence: 99%

Section: Yam Cultivation Cultural Practices and Farmers' Preference Criterial For Selection And Utilization Of Yams In Dr Congomentioning

confidence: 99%

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Diversity, trait preferences, management and utilization of yams landraces (Dioscorea species): an orphan crop in DR Congo

Adejumobi¹,

Agre²,

Anautshu

et al. 2021

Preprint

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show abstract

“…The motivations for adopting CA techniques include forest conservation and increased soil productivity. Conservation agriculture is less developed for two reasons, namely acceptance, which differs from one region to another, and the unfavorable climate in some regions ( [19], [20]). However, CA is the way forward for agricultural development in Africa [21].…”

Section: Discussionmentioning

confidence: 99%

“…There was no removal of crop residues from Maize, Groundnut and Cowpea crops plots during or after harvesting operation. The Bananas were harvested manually in accordance with local practice to reduce losses of bunches , with mature plants pulled by hand at ground level bunches of threshed, with crop residues not returned to plots ( [16], [17]).…”

Section: Cropping System and Experimental Designmentioning

confidence: 99%

The Impact of Conservation Agriculture Practice and Socio-Economic Factors on Yam Production (Dioscorea alata and Dioscorea rotundata) in Kalagoé (Lobaye, Central African Republic)

Touckia

Aba-Toumnou

Yongo

et al. 2021

AJAEES

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Few studies have been carried out on Yam (Dioscorea alata and Dioscorea rotundata) in relation with the conservation agriculture in CAR. Yam is cultivated in limited quantities despite its role in improving food security. In order to increase Yam production in the smallholder farms in CAR, the potential effect of crop management practices like nutrient application, mulching and minimum tillage on Yam crop yield and household financial returns, needs to be understood. A questionnaire was prepared and used as a tool for the collection of information from 100 producers of Yam without distinction of ages and sexes. In order to determinate the agronomical performance of Yam, two plots were explored. The first plot with 625m² (12.5m ×50m), known as the improved plot, is a plot on which all conservation agriculture practices were applied. The second plot, known as the traditional plot, is one on which traditional farming techniques were applied. The results of the survey show that 32% of the farmers are in favor for CA practice nevertheless 68% are not favor, which shows that a large proportion of farmers in Kalangoé are not aware of the benefits of this technique. The most widely cultivated variety is D. rotundata, because of its taste qualities. Some producers also grow both varieties at the same time. Some producers (28%) clear their plots by cutting down all the trees to leave the field bare, while a large number (72%) practice partial cutting by removing the shrubs to keep the large trees in order to protect the forest. A large number of producers (62%) also burn their plots for various reasons, including freeing up space and making it easier to move around the field because the plant debris from clearing prevents them from working properly. A small proportion of producers (26%) practice ploughing against 74% who do not practice this technique. The conservation agriculture practice applied to Yam gave interesting agronomic performances (growth and production parameters) than the farmers practices.

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Diversity, trait preferences, management and utilization of yams landraces (Dioscorea species): an orphan crop in DR Congo

Adejumobi

Agre

Onautshu

et al. 2022

Sci Rep

View full text Add to dashboard Cite

Yam (Dioscorea spp.) is cultivated in many villages of DR Congo as a means to sustain food security and alleviate poverty. However, the extent of the existing diversity has not been studied in details thus, considered as an orphan. A survey covering 540 farmers in 54 villages was conducted in six major yam growing territories covering three provinces in DR Congo to investigate the diversity, management and utilization of yam landraces using pre-elaborate questionnaires. Subject to synonymy, a total of 67 landraces from five different species were recorded. Farmers’ challenges limiting yam production were poor tuber qualities (69%), harvest pest attack (7%), difficulty in harvesting (6%), poor soil status (6%). The overall diversity was moderate among the recorded yam germplasm maintained at the household level (1.32) and variability exist in diversity amongst the territories and provinces. Farmers’ in territories of Tshopo and Mongala provinces maintained higher level of germplasm diversity (2.79 and 2.77) compared to the farmers in territories of Bas-Uélé (1.67). Some yam landraces had limited abundance and distribution due to loss of production interest in many villages attributable to poisons contained hence, resulting in possible extinction. Farmers’ most preferred seed source for cultivation were backyard (43%) and exchange with neighboring farmers (31%) with the objective of meeting food security and generating income. In villages where yam production is expanding, farmers are relying on landraces with good tuber qualities and high yield even though they are late maturing. This study revealed the knowledge of yam landrace diversity, constraints to production and farmers’ preferences criteria as a guide for collection and conservation of yam germplasm for yam improvement intervention.

show abstract

Agrodiversite, gestion paysanne et importance de Dioscorea praehensilis Benth. Ans la zone subhumide du Togo

Cited by 8 publications

References 11 publications

Diversity, trait preferences, management and utilization of yams landraces (Dioscorea species): an orphan crop in DR Congo

Diversity, trait preferences, management and utilization of yams landraces (Dioscorea species): an orphan crop in DR Congo

The Impact of Conservation Agriculture Practice and Socio-Economic Factors on Yam Production (Dioscorea alata and Dioscorea rotundata) in Kalagoé (Lobaye, Central African Republic)

Diversity, trait preferences, management and utilization of yams landraces (Dioscorea species): an orphan crop in DR Congo

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