African leafy vegetables in South Africa

Rensburg, W.S. Jansen van; Averbeke, W. Van; Slabbert, M.M.; Faber, Mieke; Jaarsveld, P. Van; Heerden, I Van; Wenhold, Friede; Oelofse, André

doi:10.4314/wsa.v33i3.180589

Cited by 119 publications

(84 citation statements)

References 3 publications

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“…The present study was conducted in a tropical country where the temperature at the study site ranged between 25 and 32°C. These temperatures are higher than the optimum temperatures of 10-25°C given by McCormack (2005) for higher production of a cool season B. rapa chinensis (van Rensburg, Van Averbeke, Slabbert, Faber, Van Jaarsveld, Van Heerden, Wenhold & Oelofse 2007). The optimum temperature for maximal growth and development of B. rapa chinensis is just over 20°C and it is best grown between 12°C and well below 30°C (Thomas 2003;DAFF 2013).…”

Section: Discussionmentioning

confidence: 91%

Fish polyculture system integrated with vegetable farming improves yield and economic benefits of small-scale farmers

et al. 2016

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This study explored the yield and economic benefits of African sharptooth catfish, Clarias gariepinus, and Nile tilapia, Oreochromis niloticus polyculture, reared in earthen ponds for 270 days integrated with Chinese cabbage, Brassica rapa chinensis, farmed for 45 days to small‐scale farmers in Tanzania. An integrated aquaculture–agriculture (IAA) system involving fishes and vegetables resulted in three and 2.5 times higher net yield than the culture of fishes alone and farming of non‐integrated vegetables respectively. Vegetables irrigated with pond water resulted in 1.8 times higher net and annual yields than those irrigated with stream water. The practice of fish–vegetable integration and growing of vegetables irrigated with pond water produced 14 and 13 times higher net annual yield, respectively, than the culture of fishes alone. The integrated system produced 20 and 150 times more net returns compared with vegetables irrigated with pond and stream water respectively. Integrating fishes with vegetables resulted in significantly higher annual net cash flow than the farming of fishes and vegetables separately. The study revealed that integrating fishes with B. rapa chinensis increases yields, income and food production to small‐scale farmers. Thus, small‐scale farmers can adopt IAA technology to meet the increasing demand of fish and vegetables, stabilize their incomes and diversify food production, consequently improving food security. These benefits will be realized by providing proper training in IAA technology and management skills to small‐scale farmers.

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Section: Discussionmentioning

confidence: 91%

Fish polyculture system integrated with vegetable farming improves yield and economic benefits of small-scale farmers

et al. 2016

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“…Although wild vegetables are a rich source of nutrients and in times past played a vital role in the people's diets, their consumption has declined over the years and this has recently prompted agriculturalists especially extension workers and researchers alike to focus their attention on revitalising them through encouraging their cultivation in home gardens (Jansen van Rensberg et al 2007;Faber and Wenhold 2007). Solanum nigrum is a popular wild vegetable that is consumed by the rural populace of the Eastern Cape Province of South Africa (Bvenura and Afolayan 2014).…”

Section: Introductionmentioning

confidence: 99%

Proximate and Phytate Accumulation in Solanum nigrum L. Cultivated on Fertilizer-Amended Soils

Afolayan

Bvenura

2016

Communications in Soil Science and Plant Analysis

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Solanum nigrum was subjected to five fertiliser treatments on the field and glasshouse to determine the wild vegetable's nutritional response to fertilisers with maturity and best fertiliser option for optimum harvesting period of the leaves for nutritional benefits. The application of 50 kg N/ha + 4.07 t manure/ha fertiliser increased protein uptake on the field and glasshouse; vitamin C in the glasshouse and lipid on the field. The addition of 100 kg N/ha + 8.13 t manure/ha increased the uptake of vitamin C on the field and lipid content in the glasshouse. The control increased the accumulation of fibre on both the field and glasshouse while also lowering the phytate content in the glasshouse. Fibre was at peak 11 and 4 weeks after transplanting on the field and glasshouse respectively while lipids were highest 11 and 6 weeks after transplanting.Vitamin C was highest 9 and 6 weeks after transplanting on the field and glasshouse respectively after which it sharply declined towards senescence. Protein was at peak between the 3 rd and 4 th weeks after transplanting. Although various nutrients responded differently to fertiliser treatments, these results indicate the potential of S. nigrum to meet the human nutritional recommended daily adequate intake values. Also, the results of this study indicate that the cultivation of this wild vegetable increases its nutritional composition as compared to the wild Downloaded by [Temple University Libraries] at 21:30 14 June 2016A c c e p t e d M a n u s c r i p t 124 species. The best fertiliser option and best time to harvest the plant is best advised according to specific nutritional challenges. The consumption of S. nigrum could be expected to contribute a large proportion of the nutritional requirements in the human body.

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“…Corchorus trilocularis L, known as the member of Jew's mallow (Tiliaceae family) (Jansen van Rensburg et al, 2007), was reported to contain 54.43 mg/kg Dw (Agea et al, 2014). Jew's mallow is commonly consumed by the African communities from Limpopo, Gauteng, and Mpumalanga provinces in South Africa.…”

Section: Carotenoidsmentioning

confidence: 99%

A comprehensive review on beneficial dietary phytochemicals in common traditional Southern African leafy vegetables

Sivakumar

Chen

Sultanbawa

2018

Food Science & Nutrition

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Regular intake of sufficient amounts of certain dietary phytochemicals was proven to reduce the incidence of noncommunicable chronic diseases and certain infectious diseases. In addition, dietary phytochemicals were also reported to reduce the incidence of metabolic disorders such as obesity in children and adults. However, limited information is available, especially on dietary phytochemicals in the commonly available traditional leafy vegetables. Primarily, the review summarizes information on the major phytochemicals and the impact of geographical location, genotype, agronomy practices, postharvest storage, and processing of common traditional leafy vegetables. The review also briefly discusses the bioavailability and accessibility of major phytochemicals, common antinutritive compounds of the selected vegetables, and recently developed traditional leafy vegetable‐based food products for dietary diversification to improve the balanced diet for the consumers. The potential exists for better use of traditional leafy vegetables to sustain food security and to improve the health and well‐being of humans.

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African leafy vegetables in South Africa

Cited by 119 publications

References 3 publications

Fish polyculture system integrated with vegetable farming improves yield and economic benefits of small-scale farmers

Fish polyculture system integrated with vegetable farming improves yield and economic benefits of small-scale farmers

Proximate and Phytate Accumulation in Solanum nigrum L. Cultivated on Fertilizer-Amended Soils

A comprehensive review on beneficial dietary phytochemicals in common traditional Southern African leafy vegetables

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