Genetic diversity for immature pod traits in Ethiopian cowpea [Vigna unguiculata (L.) Walp.]  landrace collections

Ashinie, Selamawit Ketema; Tesfaye, Bizuayehu; Wakeyo, Gemechu Keneni; Fenta, Berhanu Amsalu

doi:10.5897/ajb2020.17097

Cited by 8 publications

(4 citation statements)

References 20 publications

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“…The average global cowpea yield is 450 kg/ha (Kebede and Bekeko, 2020). However, improved cowpea varieties with proper agronomic management can achieve yields of 2,200 to 3,200 kg/ha (Ashinie et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Vigna unguiculata: a productive option in the face of climate change?

Murga-Orrillo,

Chuquimez Gonzales,

Pashanasi Amasifuén

et al. 2023

Front. Agron.

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Faced with the challenges of extreme climatic events and increasing food demand, cowpea farming offers a viable option for generating grains and foliage while aiding soil preservation. This research aimed to evaluate the impact of diverse organic fertilizers and plastic mulches on cowpea yields and soil macrofauna. A completely randomized block design was employed, with a factorial arrangement of 3 × 3 + 1, encompassing plastic mulch (3.5 mm) color (white, black, and blue), organic fertilizer (compost of chicken manure-agricultural soil-dolomite, island guano, and cattle manure compost), as well as a control (without synthetic mulch and organic fertilization). The study evaluated soil temperature, plant height, area biomass, foliar macronutrients, yield, and soil macrofauna. The findings demonstrate that soil temperature varies based on the color of the plastic mulch. It was observed that using organic fertilizers resulted in significantly taller plants than the control group, with fresh and dry biomass weight also being significantly greater (p<0.05) for cattle manure compost compared to the other treatments. Furthermore, the use of plastic mulches had an impact on soil macrofauna. Cowpea displayed resistance to low soil fertility and fluctuations in soil temperature ranging from <35°C to >40°C. However, high precipitation during the fruiting and harvesting seasons significantly impacted grain yields. Organic fertilizers produced noticeable variances (p<0.05) in the aerial biomass weight of cowpeas, particularly cattle manure compost. The data, indicates that soil macrofauna, like the earthworm Pontoscolex corethrurus, improved the availability of N, P, and K to the plant during the reproductive stage. Plastic mulches and organic fertilizers were linked to an increase in earthworm weights, specifically P. corethrurus. Additionally, plastic mulches served as a physical barrier against ants and bugs.

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Section: Discussionmentioning

confidence: 99%

Vigna unguiculata: a productive option in the face of climate change?

Murga-Orrillo,

Chuquimez Gonzales,

Pashanasi Amasifuén

et al. 2023

Front. Agron.

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“…According to [32], V. unguiculata is currently being produced in the country's northwest, east, central rift valley, and southern regions. It is regarded as the most significant lowland pulse utilized for food, feed, restoring soil fertility, and for revenue generation [73,74]. Cowpea is grown mostly as a single crop (48.75%), followed by intercropping (35%) [73,74].…”

Section: Discussionmentioning

confidence: 99%

“…It is regarded as the most significant lowland pulse utilized for food, feed, restoring soil fertility, and for revenue generation [73,74]. Cowpea is grown mostly as a single crop (48.75%), followed by intercropping (35%) [73,74]. The result reveals that V. unguiculata growth and production was higher at optimal precipitation of wettest quarter (Bio16) ranging from 200 mm to 450 mm (Figure 6A).…”

Section: Discussionmentioning

confidence: 99%

Modeling the Impact of Climate Change on Sustainable Production of Two Legumes Important Economically and for Food Security: Mungbeans and Cowpeas in Ethiopia

2022

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Climate change is one of the most serious threats to global crops production at present and it will continue to be the largest threat in the future worldwide. Knowing how climate change affects crop productivity might help sustainability and crop improvement efforts. Under existing and projected climate change scenarios (2050s and 2070s in Ethiopia), the effect of global warming on the distribution of V. radiata and V. unguiculata was investigated. MaxEnt models were used to predict the current and future distribution pattern changes of these crops in Ethiopia using different climate change scenarios (i.e., lowest (RCP 2.6), moderate (RCP 4.5), and extreme (RCP 8.5)) for the years 2050s and 2070s. The study includes 81 and 68 occurrence points for V. radiata and V. unguiculata, respectively, along with 22 environmental variables. The suitability maps indicate that the Beneshangul Gumuz, Oromia, Amhara, SNNPR, and Tigray regions are the major Ethiopian regions with the potential to produce V. radiata, while Amhara, Gambella, Oromia, SNNPR, and Tigray are suitable for producing V. unguiculata. The model prediction for V. radiata habitat ranges distribution in Ethiopia indicated that 1.69%, 4.27%, 11.25% and 82.79% are estimated to be highly suitable, moderately suitable, less suitable, and unsuitable, respectively. On the other hand, the distribution of V. unguiculata is predicted to have 1.27%, 3.07%, 5.22%, and 90.44% habitat ranges that are highly suitable, moderately suitable, less suitable, and unsuitable, respectively, under the current climate change scenario by the year (2050s and 2070s) in Ethiopia. Among the environmental variables, precipitation of the wettest quarter (Bio16), solar radiation index (SRI), temperature seasonality (Bio4), and precipitation seasonality (Bio15) are discovered to be the most effective factors for defining habitat suitability for V. radiata, while precipitation of the wettest quarter (Bio16), temperature annual range (Bio7) and precipitation of the driest quarter (Bio17) found to be better habitat suitability indicator for V. unguiculata in Ethiopia. The result indicates that these variables were more relevant in predicting suitable habitat for these crops in Ethiopia. A future projection predicts that the suitable distribution region will become increasingly fragmented. In general, the study provides a scientific basis of suitable agro-ecological habitat for V. radiata and V. unguiculata for long-term crop management and production improvement in Ethiopia. Therefore, projections of current and future climate change impacts on such crops are vital to reduce the risk of crop failure and to identify the potential productive areas in the country.

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“…In Ethiopia, cowpea is cultivated primarily for its edible seeds, although limited use of its leaf as green vegetable is reported (Alemu et al., 2016). However, its productivity among smallholder farmers in the country is very low, ranging from 300 to 400 kg ha −1 (Beshir et al., 2019), while yields of 2,200–3,200 kg ha −1 have been commonly recorded from improved varieties under suitable management (Ashinie et al., 2020). These low yields have been attributed to the use of poor quality seeds, low soil nutrient availability, drought, pest and disease incidences, high cost of mineral fertilizers, and unavailability of rhizobial inoculants (Ndakidemi et al., 2006).…”

Section: Introductionmentioning

confidence: 99%