Estratégias de irrigação com água salina no tomateiro cereja em ambiente protegido

Guedes, R.A.A.; Oliveira, Francisco de Assis de; Alves, Rita de Cássia; Medeiros, Ana Santana de; Gomes, Lucas Pereira; Costa, Luilson Pinheiro

doi:10.1590/1807-1929/agriambi.v19n10p913-919

Cited by 15 publications

(18 citation statements)

References 18 publications

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“…In general, the results presented in this study on the splitroot technique as irrigation management to mitigate the effect of salinity on bell pepper growth and yield confirm those reported by other authors, in crops such as tomato (Koushafar et al, 2011;Guedes et al, 2015) and cucumber (Oliveira et al, 2017).…”

Section: Resultssupporting

confidence: 90%

“…Similar results have been found by Attia et al (2009), Guedes et al (2015 and Oliveira et al (2017), who worked with pea tomato and cucumber, respectively, under two salinity levels and using the split-root method. These authors observed that root exposure to salinity led to decrease in biomass production, and that the negative effect of salinity was mitigated when plants were cultivated with only half of the root system irrigated with saline water, whereas the other half was irrigated with the low-salinity control treatment.…”

Section: Resultssupporting

confidence: 86%

“…Negative effect of saline water on bell pepper growth has been reported by other authors (Hussein et al, 2012); as well as in other species of the same family, such as tomato (Guedes et al, 2015). Reduction in plant height under saline stress is a typical behavior of glycophytes (Munns & Tester, 2008) and can be attributed to the increase in the osmotic pressure of the medium and the consequent reduction in the availability of the water to be consumed, affecting cell division and elongation (Martinez & Lauchli, 1994).…”

Section: Resultsmentioning

confidence: 69%

“…In the Brazilian literature, there are few studies on this technique applied to the use of saline water (Guedes et al, 2015;Oliveira et al, 2017), which found that the adoption of this technique allows saline water to be used without reduction in yield. According to Kong et al (2012), greater growth of plants subjected to heterogeneous salinity is due to the higher water use efficiency, reduction in the absorption and transport of Na + to the leaves and efflux of this ion when one part of the root system is kept under no saline stress.…”

Section: Introductionmentioning

confidence: 99%

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Heterogeneous salinity in the root system of bell pepper in greenhouse

Oliveira

Alves

Bezerra

et al. 2018

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe split-root technique was used as a strategy to reduce saline stress on pepper. A completely randomized design with six treatments and four replicates was used. The treatments consisted of six saline water application strategies (T1 -salinized nutrient solution (S1 = 1.4 dS m ) throughout the cycle, T3 -S1 and S2 throughout the cycle, using two emitters and without splitting the root system, T4 -S1 and S2, using two emitters and splitting the root system by a plastic film, T5 -S1 and S2, using two emitters and splitting the root system, alternating the solutions every 15 days, T6 -S1 and S2, using two emitters and without splitting the root system, alternating the solutions every 15 days). Five fruit harvests were performed, and the plants were harvested at 85 days after initiation of treatments and evaluated for the following variables: leaf number, leaf area, plant height, stem diameter, shoot dry matter (stem + leaves + fruits), root dry matter, number of fruits, fresh fruit weight and fruit production per plant. Most of the variables were reduced by the salinity of irrigation water. The highest fruit yields were obtained using low-salinity water, with the mixture of non-saline and saline waters, and alternating biweekly when the root system was split, demonstrating the viability of these three techniques.Salinidade heterogênea no sistema radicular de pimentão em ambiente protegido R E S U M O A técnica de divisão do sistema radicular foi utilizada como estratégia para reduzir o estresse salino em pimentão. Utilizou-se o delineamento inteiramente casualizado com seis tratamentos e quatro repetições. Os tratamentos foram constituídos por seis estratégias de aplicação de água salina (T1 -solução nutritiva não salinizada (S1 = 1,4 dS m ) durante todo o ciclo; T3 -S1 e S2 durante todo o ciclo, utilizando dois emissores e sem divisão do sistema radicular; T4 -S1 e S2, utilizando dois emissores e divisão do sistema radicular por um filme plástico; T5 -S1 e S2, utilizando dois emissores com divisão do sistema radicular, alternando-se as águas a cada 15 dias; T6 -S1 e S2, utilizando dois emissores sem divisão do sistema radicular, alternando-se as águas a cada 15 dias). Foram realizadas cinco colheitas de frutos e as plantas foram coletadas aos 85 dias após início dos tratamentos, e avaliadas quanto às seguintes variáveis: número de folhas, área foliar, altura da planta, diâmetro do caule, massa seca parte aérea (caule + folhas + frutos) e de raiz, número de frutos, massa fresca de frutos e produção de frutos por planta. A maioria das variáveis foi reduzida pela salinidade da água de irrigação. Os maiores rendimentos de frutos foram obtidos com uso de água de baixa salinidade, com a mistura de águas não salinas e salinas, e com alternação quinzenal quando utilizando a divisão do sistema radicular, demonstrando a viabilidade destas três técnicas.

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Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 86%

Section: Resultsmentioning

confidence: 69%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Heterogeneous salinity in the root system of bell pepper in greenhouse

Oliveira

Alves

Bezerra

et al. 2018

Rev. bras. eng. agríc. ambient.

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“…Even in the context of hydroponic cultivation, strategies using brackish water to prepare and replace the evapotranspired nutrient solution with waters of different levels of electrical conductivity (Freitas et al, 2014;Campos Júnior et al, 2018) can further mitigate the effects of salts on plants (Guedes et al, 2015), in addition to rationalizing the use of waters with different salt contents, increasing the water supply (Santos Júnior et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Production of parsley in hydroponic conditions under isosmotic brackish nutrient solutions

Martins

Júnior²,

Júnior³

et al. 2019

Ciênc. agrotec.

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Brackish waters may vary in their chemical compositions, interfering with different plant responses to stress; therefore, the present study aimed to evaluate the production components of parsley plants subjected to levels of electrical conductivity in nutrient solutions with an initial ECns of 1.58 dS m-1, which was solubilized in water with the following water electrical conductivity configurations (ECw): 0.12 (control), 1.12, 2.12, 3.12, 4.12 and 5.12 dS m-1, resulting in six isosmotic levels (ECns = 1.7, 2.7, 3.7, 4.7, 5.7 and 6.7 dS m-1) in an interaction with four types of salt: NaCl, CaCl2, MgCl2 and KCl. The experimental design was completely randomized in a factorial scheme with five replicates. Two strategies were used to restore the volume consumed by the parsley plants, and the replacement was made with municipal-supply water (ECa = 0.12 dS m-1) in the first strategy and with the respective brackish waters in the second strategy. The total fresh and dry weights of the shoots and roots were evaluated as well as the total dry mass percentage of the shoots and roots. The responses of the plants to the different cationic natures was more evident at the highest levels of electrical conductivity tested, and the use of municipal-supply water to replace the evapotranspired depth mitigated the deleterious effects of salinity. In addition, greater reductions were observed in the fresh and dry mass when the replacement of the volume consumed was with the brackish waters.

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The partial root-zone saline irrigation system and antioxidant responses in tomato plants

Alves

Medeiros

Nicolau

et al. 2018

Plant Physiology and Biochemistry

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Salinity is a limiting factor that can affect plant growth and cause significant losses in agricultural productivity. This study provides an insight about the viability of partial root-zone irrigation (PRI) system with saline water supported by a biochemical approach involving antioxidant responses. Six different irrigation methods using low and high salt concentrations (S1-0.5 and S2-5.0 dS m) were applied, with or without PRSI, so that one side of the root-zone was submitted to saline water while the other side was low salinity water irrigated. The results revealed different responses according to the treatments and the PRSI system applied. For the treatments T1, T2 and T3, the PRSI was not applied, while T4, T5 and T6 treatments were applied with PRSI system. Lipid peroxidation, proline content, and activities of SOD, CAT, APX, GR and GSH in tomato plants subjected to PRSI system were analyzed. Plant growth was not affected by the salt concentrations; however, plants submitted to high salt concentrations showed high MDA content and Na accumulation when compared to the control plants. Plants submitted to treatments T4, T5 and T6 with PRSI system exhibited lower MDA compared to the control plants (T1). Proline content and activities of SOD, CAT, APX, GR and GSH content were maintained in all treatments and tissues analyzed, with only exception for APX in fruits and GSH content, in roots. The overall results showed that PRSI system could be an applicable technique for saline water supply on irrigation since plants did not show to be vulnerable to salt stress, supported by a biochemical approach involving antioxidant responses.

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Estratégias de irrigação com água salina no tomateiro cereja em ambiente protegido

Cited by 15 publications

References 18 publications

Heterogeneous salinity in the root system of bell pepper in greenhouse

Heterogeneous salinity in the root system of bell pepper in greenhouse

Production of parsley in hydroponic conditions under isosmotic brackish nutrient solutions

The partial root-zone saline irrigation system and antioxidant responses in tomato plants

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