Effect of rainfall variability on the production of Vigna unguiculata (L.) Walp. in the semi-arid region of Paraíba

Silva, Luiz Daniel Rodrigues da; Cartaxo, Paulo Henrique de Almeida; Silva, M. C.; Gonzaga, Kennedy Santos; Araújo, D. B.; Sousa, Ednardo; Santos, João Paulo de Oliveira

doi:10.36560/13920201069

Cited by 6 publications

(3 citation statements)

References 23 publications

(23 reference statements)

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“…In Brazil, the cultivation of this fabaceae occurs predominantly in the North and Northeast regions on small and medium-sized rural properties and under rainfed conditions ( Guimarães et al., 2020 ). Thus, despite its rusticity, some research has demonstrated that cowpea productivity in these regions is strongly affected by water deficits in at least one of its phenological phases ( Silva et al., 2020 ; Souza et al., 2020a ). According to data published by CONAB (2023) , although the northeast region has the largest area cultivated with this species, its productivity (411 kg ha -1 ) is lower than the central-south region (1,024 kg ha -1 ), which presents greater technological innovations.…”

Section: Introductionmentioning

confidence: 99%

Salicylic acid improves cowpea productivity under water restriction in the field by modulating metabolism

Cavalcante,

de Melo,

Ferraz

et al. 2024

Front. Plant Sci.

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IntroductionSalicylic acid has shown promise in alleviating water stress in cultivated plants. However, there is a lack of studies confirming its effectiveness in cowpea plants grown in field conditions. Therefore, this research aimed to evaluate the use of salicylic acid as a water stress mitigator in cowpea cultivars under different irrigation depths in field conditions.MethodsFour cowpea cultivars (BRS Novaera, BRS Tapaihum, BRS Pujante, and BRS Pajeú) were subjected to different treatments: control (W100: 100% replacement of crop evapotranspiration – ETc), W50 (50% of ETc), W50+SA2 (50% of ETc + 276 mg L-1 of SA), and W50+SA4 (50% of ETc + 552 mg L-1 of SA). The treatments were combined in a 4×4 factorial scheme with three replications, arranged in a randomized block design.ResultsWater restriction had a negative impact on the water status, growth, gas exchange, and production of the cultivars while also leading to changes in the antioxidant metabolism and osmolyte concentration. The application of SA enhanced antioxidant activity and the synthesis of osmotic adjusters under stress conditions. The most effective concentration was 276 mg L-1 in stage R2 and 552 mg L-1 in stage V7, respectively. The BRS Pujante cultivar showed increased productivity under water restriction with SA application, while the BRS Tapaihum was the most tolerant among the cultivars studied.DiscussionIn summary, our findings underscore the importance of using SA to mitigate the effects of water restriction on cowpea cultivation. These discoveries are crucial for the sustainability of cowpea production in regions susceptible to drought, which can contribute to food security. We further add that the adoption of new agricultural practices can enhance the resilience and productivity of cowpea as an essential and sustainable food source for vulnerable populations in various parts of the world.

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Section: Introductionmentioning

confidence: 99%

Salicylic acid improves cowpea productivity under water restriction in the field by modulating metabolism

Cavalcante,

de Melo,

Ferraz

et al. 2024

Front. Plant Sci.

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“…Research aimed at improving plant species resistance to abiotic factors has been gaining more and more notoriety in the world. Among the plants with a tolerance to salinity, cowpea (Vigna unguiculata (L.) Walp) is an example, a species well adapted to the edaphoclimatic conditions of the northeast region of Brazil (Ayers & Westcot, 1999;Silva et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Effect of salt stress on the parasitism of Meloidogyne enterolobii in cowpea

Magalhães

Café

Junior

et al. 2021

RSD

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Cowpea, Vigna unguiculata (L.) Walp, is a very important Fabaceae in the diet of families in the northeast region of Brazil. This plant species is among the different cultures affected by the root-knot nematode. In this region, in addition to phytonematodes, another condition that affects cowpea productivity is salinity, one of the main abiotic limiting factors. The cultivar Pitiúba, however, has good adaptability to salt stress conditions. However, information on the behavior of root-knot nematodes in an environment with high levels of salinity for this crop is still scarce. Based on the above, the objective of this work was: 1) to evaluate the hatchability of J2 of Meloidogyne enterolobii in 100mM NaCl solution; 2) evaluate the motility and infectivity of J2 of M. enterolobii in saline solution at the levels of 0, 25, 50, 75, 100, 125, 150, 175, 200, 300, and 400mM; 3) to investigate the impairment of the development of M. enterolobii in cowpea Pitiúba under irrigation with NaCl solution at 100mM. It was found that J2 hatching, motility, and infectivity of juveniles of M. enterolobii were not affected by the levels of salinity tested in vitro. In Pitiúba, irrigation with 100 mM saline solution considerably affected the development of juveniles of the pathogen in the roots.

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“…Apesar do seu cultivo e rusticidade, algumas pesquisas têm demonstrado que a produtividade do feijão-caupi pode ser afetada de forma drástica pela deficiência hídrica em pelo menos uma das fases de seu desenvolvimento, podendo apresentar baixas produtividades quando é submetido às práticas inadequadas de manejo (SOUZA et al, 2020;SILVA et al, 2020). O déficit hídrico é um fator agravante para a perda da produtividade vegetal, por afetar o desenvolvimento e limitar a assimilação líquida de carbono (CAVALCANTE, 2021).…”

Section: Introductionunclassified

Plasticidade fenotípica do feijão-caupi BRS Itaim sob restrição hídrica e Seed Priming com PEG 6000 e silício.

Borborema¹

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A região do Nordeste brasileiro se caracteriza por suas altas variações de níveis de radiação solar e altas temperaturas do ar, prejudicando o crescimento do feijão-caupi, neste sentido, há necessidade de pesquisas que utilize de estratégias para atenuar os estresses ocasionados pela restrição hídrica. Objetivou-se induzir tolerância ao déficit hídrico em feijão-caupi, cultivar BRS Itaim, a partir da aplicação de seed priming com polietilenoglicol 6000 e silício. Foi conduzido um experimento em campo utilizando-se de delineamento inteiramente casualizado, sendo duas lâminas de irrigação (W50 e W100% da ETo - Evapotranspiração de referência) e seis combinações de seed priming - SP (Ψ0 + 0Si, Ψ0 + 200Si, Ψ-0,4 + 0Si, Ψ-0,4 + 200Si, Ψ-0,8 + 0Si e Ψ-0,8 + 200Si), com quatro repetições. Foram avaliados o potencial hídrico do pecíolo, conteúdo relativo de água na folha, vazamento de eletrólitos celulares, teor prolina, a atividade da superóxido dismutase, ascorbato peroxidase e matéria seca total do solo. Os dados foram submetidos à análise de variância e testes de comparações de médias. Verificou-se que o seed priming com polietilenoglicol 6000 e silício atenua o estresse hídrico através da homeostase das relações hídricas, do ajustamento osmótico e mecanismo antioxidante do feijão-caupi cultivar BRS Itaim.

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Effect of rainfall variability on the production of Vigna unguiculata (L.) Walp. in the semi-arid region of Paraíba

Cited by 6 publications

References 23 publications

Salicylic acid improves cowpea productivity under water restriction in the field by modulating metabolism

Salicylic acid improves cowpea productivity under water restriction in the field by modulating metabolism

Effect of salt stress on the parasitism of Meloidogyne enterolobii in cowpea

Plasticidade fenotípica do feijão-caupi BRS Itaim sob restrição hídrica e Seed Priming com PEG 6000 e silício.

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