Cowpea

Narayana, M. N.; Angamuthu, Mahalingam

doi:10.1016/b978-0-12-821450-3.00007-x

Cited by 3 publications

(3 citation statements)

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“…The seed yield analysis over the two cropping seasons showed that in 2021, Abuja local (Brown) achieved the highest yield (700.63 kg), whereas Sampea 20T had the lowest yield (500.33 kg/ha). Varietal differences observed in this study was in line with the report of Narayana (2021) [14] who reported that cowpea genotypes differs in their attributes especially during flowering and developmental stages.…”

Section: Mean Days To 50% Flowering and Yield Of Four Varieties Of Co...supporting

confidence: 92%

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Occurrence of foliar fungal diseases of cowpea and their management with garlic (Allium sativum L.) extracts in Abuja Nigeria

Akpan,

Anjorin,

Ogunremi

et al. 2024

Int. J. Agric. Food Sci.

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This study assessed the incidence and severity of foliar fungal diseases in selected cowpea varieties and the efficacy of garlic (Allium sativum L) extract in the management of the major disease in Abuja, Nigeria. Four cowpea varieties namely, Sampea 20T, Sampea 14, Abuja local white, and Abuja local Brown obtained from the National Biotechnology Development Agency (NABDA), Abuja were used. A Randomized Complete Block Design was adopted in the study. The experiment covered two growing seasons -2021 and 2022. Three levels of garlic extract treatment, one level of mancozeb (synthetic fungicide) as the positive control, and de-chlorinated water application as the control. Each treatment was replicated thrice. Garlic extract at (100%, 50%, and 25%) and synthetic fungicide (mancozeb 3.33g/L) were used for field application. Cercospora leaf spot (CLS) and brown blotch cowpea diseases were obviously identified. The results indicated a significantly higher incidence (p≤0.05) of Cercospora leaf spot diseases on Sampea 20T at 8 and 10 WAS, with 52.47% and 55.20%, respectively. The incidence of BB disease at 8 and 10 WAS was also significantly higher (p≤0.05) in Sampea 20T at 50.80% and 63.90%, respectively, compared to other varieties. Abuja local (white) had significantly higher (p≤0.05) days to 50% flowering in the two seasons. The 100% garlic extract and mancozeb treatments significantly lowered (p≤0.05) CLS disease incidence and severity at 10 WAS on the field compared to other treatments and the control. This study highlights the effectiveness of environmentfriendly garlic extract for managing leaf spot and brown blotch diseases in cowpeas, the possibility in including it in an integrated approach to cowpea disease management.

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Section: Mean Days To 50% Flowering and Yield Of Four Varieties Of Co...supporting

confidence: 92%

“…This variance could be attributed to varietal differences. Narayana (2021) [14] emphasized that disease severity levels vary based on geographical locations, districts, and ecological differences due to variations in environmental conditions.…”

Section: Resultsmentioning

confidence: 99%

Occurrence of foliar fungal diseases of cowpea and their management with garlic (Allium sativum L.) extracts in Abuja Nigeria

Akpan,

Anjorin,

Ogunremi

et al. 2024

Int. J. Agric. Food Sci.

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“…Cowpea [Vigna unguiculata (L.) Walp] is a legume of the Fabaceae family which is also known by different names in different regions: west Africa (wake and ewa), Brazil (caupi), United States (blackeyed peas, field peas, crowder peas, southern peas, pinkeyes), India (lobia), China (long bean, asparagus bean) (Narayana and Angamuthu, 2021). Cowpea is believed to have originated in Africa and is widely cultivated in semi-arid and arid regions including Botswana because of its adaptation to hot, erratic and low rainfall conditions (Mashungwa et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Physicochemical, Cooking Quality and Sensory Acceptability of Three Cowpea Varieties Grown in Botswana

Gopadile,

Kobue-Lekalake,

Mokobi

et al. 2024

AJDFR

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Background: Information on the physicochemical, cooking and sensory qualities of cowpea seeds are required for nutrition information, to design processing and for consumer acceptance. In view of this, three cowpea varieties (Tswana, Blackeye and ER7) grown in Botswana were evaluated. Method: Proximate compositions, physical, gelatinization and sensory properties respectively were evaluated following AOAC, conventional, Amylograph and on 7-point hedonic sensory acceptability scale. Result: Significant variations (p less than 0.05) were observed in fat, fiber, ash and available carbohydrate (CHO) contents, length, thickness, hundred seeds weight (HSW), hydration capacity, hydration index, cooking time, flour starches maximum gelatinization temperature (Tm,°C) and viscosity at Tm. The percentage moisture, protein, fiber, fat, ash and available carbohydrate contents ranged 9.5-10.1, 21.7-22.8, 2.3-2.6, 1.1-2.0, 2.1-3.0 and 59.4-62.3, respectively. Initial gelatinization temperature (To,°C) and Tm (°C) were ranged 71.3(ER7)-73.7(Tswana) and 83.0(ER7)-84.7(Blackeye), respectively. Significant (p less than 0.05) variations in Tm and viscosity at Tm were observed because of differences in water uptake, swelling and thickening ability at high temperature. Longest cooking time was recorded for Tswana (43.57 min) while shortest was for Blackeye (36.10 min). Tswana recorded a longer cooking time probably because of low water hydration capacity, small seed size and low HSW. There was no significant difference in the sensory liking of the cooked cowpea seeds and were rated from slightly to moderately like. Cowpeas of high protein and fiber contents, short cooking time and high thickening ability on cooking are preferred for healthy diets. In terms of cooking time and thickening ability, Tswana variety appeared poor. Shorter cooking time, high protein content and high thickening ability of Blackeye cowpea is more acceptable. The ER7 is preferred for its large seed size.

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Moisture-Dependent Physical and Aerodynamics Properties of Cowpea Seeds

Adetola,

Mary,

Lawal

2024

Turkish Journal of Agricultural Engineering Research

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This study focuses on the significant impact of moisture content on the engineering properties of cowpea seeds, which is vital for designing effective agricultural tools, equipment, and machines. We specifically examined two cowpea seed varieties, SAMPEA-16 and SAMPEA-14, across different moisture levels (10, 15, 20, 25, and 30% wb). Our findings show distinct variations in the physical characteristics of these seeds as the moisture content changes. For both SAMPEA-16 and SAMPEA-14, we observed changes in average length, width, and thickness at each moisture level. At moisture contents ranging from 10% to 30% wb, the dimensions for SAMPEA-16 were 11.20 mm by 9.10 mm by 8.61 mm, gradually changing to 10.60 mm by 8.80 mm by 8.50 mm, and for SAMPEA-14, they ranged from 8.30 mm by 6.50 mm by 6.50 mm to 8.40 mm by 6.50 mm by 6.40 mm. Significantly, the 1000 seed mass for SAMPEA-16 increased from 302.30 g to 404.80 g within the 15% to 30% moisture range, while the sphericity varied from 0.849 to 0.877. For SAMPEA-14, similar trends were observed with the sphericity shifting from 0.848 to 0.852. Additionally, the true density for SAMPEA-14 and SAMPEA-16 changed from 1034.12 kg m-³ to 1074.40 kg m-³ and 1089.61 kg m-³ to 1116.87 kg m-3, respectively. Another notable finding is the increase in the angle of repose with moisture content. For SAMPEA-16, it rose from 22.40˚ to 30.23˚, and for SAMPEA-14, from 23.22˚ to 34.28˚, as moisture content increased from 10% to 30%. Furthermore, the terminal velocity for both varieties increased with moisture, with SAMPEA-14 ranging from 4.92 to 5.25, and SAMPEA-16 from 5.72 to 6.16, at 10% to 25% moisture content. The insights from this study are crucial for the design of agricultural machinery, processing units, and storage facilities, aiming to enhance the quality and quantity of cowpea produce.

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Cowpea

Cited by 3 publications

References 184 publications

Occurrence of foliar fungal diseases of cowpea and their management with garlic (Allium sativum L.) extracts in Abuja Nigeria

Occurrence of foliar fungal diseases of cowpea and their management with garlic (Allium sativum L.) extracts in Abuja Nigeria

Physicochemical, Cooking Quality and Sensory Acceptability of Three Cowpea Varieties Grown in Botswana

Moisture-Dependent Physical and Aerodynamics Properties of Cowpea Seeds

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