Agronomic biofortification of cowpea with selenium by foliar fertilization: effect of doses in three cultivars

Selenium (Se) deficiency in the human population is one of the major nutritional problems in the world. A possible solution is biofortification. Biofortification is a process that increases the element of interest's concentration in food by fertilizer applications (agronomic biofortification) o...

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Bibliographic Details
Published in:Journal of plant nutrition 2020-02, Vol.43 (4), p.538-547
Main Authors: Ramos, Danilo Pereira, Tavares, Taynar Coelho de Oliveira, Sousa, Sérgio Alves de, Nascimento, Vitor L., Martinez, Roberto Antonio Savelli, Chagas Junior, Aloísio Freitas, Fidelis, Rodrigo Ribeiro
Format: Article
Language:English
Subjects:
Agronomy
Cowpeas
Crop yield
Cultivars
Fertilization
Fertilizer application
Fertilizers
Foliar applications
Food
Food security
grain yield
Human populations
Seeds
Selenium
Sodium
Sodium selenate
Tropical environment
Tropical environments
Vigna unguiculata
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Summary:Selenium (Se) deficiency in the human population is one of the major nutritional problems in the world. A possible solution is biofortification. Biofortification is a process that increases the element of interest's concentration in food by fertilizer applications (agronomic biofortification) or by genetic breeding focused on accumulation capacity for this element (genetic biofortification). Thus, the aim of this work was to determine the effect of Se doses on biofortification efficiency and agronomic traits of cowpea cultivars. The factors here studied were five doses of Se (0, 10, 20, 30 and 40 g ha −1 ), using sodium selenate (Na 2 SeO 4 ) as Se source, and three cultivars of cowpea (BRS-Cauamé, BRS-Guariba, and BRS-Itaim). Foliar application of selenate allows biofortification of selenium in cowpea grains without an impact on growth, development, and grain yield. The biofortification of Se in cowpea seeds can contribute to the food security of the low-income population of tropical regions.
ISSN:0190-4167
1532-4087
DOI:10.1080/01904167.2019.1685096