Estresse Salino E Biorregulador Vegetal Em Feijão Caupi

Oliveira, Francisco de Assis; Oliveira, Mychelle Karla Teixeira de; Lima, Luan Alves; Alves, Rita de Cássia; Régis, Lúcia R. de L.; Santos, S. T.

doi:10.15809/irriga.2017v22n2p314-329

Cited by 12 publications

(9 citation statements)

References 13 publications

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“…The development of irrigation management strategies, especially those aimed at mitigating the effects of saline stress on plants (Silva et al, 2013;Oliveira et al, 2015), is one way to increase the cowpea productivity in regions with salinity problems. Among these strategies, the application of natural or synthetic substances that alleviate the salinity stress on plants may be an important alternative (Oliveira et al, 2017). Several studies have been conducted aiming the development of techniques that might alleviate the negative effects of irrigation with saline water, the use of biostimulants is among the techniques studied (Oliveira et al, 2013(Oliveira et al, , 2017.…”

Section: Introductionmentioning

confidence: 99%

“…Among these strategies, the application of natural or synthetic substances that alleviate the salinity stress on plants may be an important alternative (Oliveira et al, 2017). Several studies have been conducted aiming the development of techniques that might alleviate the negative effects of irrigation with saline water, the use of biostimulants is among the techniques studied (Oliveira et al, 2013(Oliveira et al, , 2017. Biostimulants are products that can assist plants in overcoming abiotic stresses, mainly due to their roles as hormonal and nutritional stimulants (Oliveira et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Several studies have already proven the beneficial effects of biostimulants applications (Oliveira et al, 2015(Oliveira et al, , 2017. However, in most of these researches the biostimulant used was the Stimulate ® (plant growth regulator of the chemical group composed of the hormones cytokinin, gibberellin and indolalkanoic acid).…”

Section: Introductionmentioning

confidence: 99%

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Physiological Responses of Cowpea (Vigna unguiculata) Under Irrigation With Saline Water and Biostimulant Treatment

Sousa¹,

Ribeiro²,

Santos³

et al. 2018

JAS

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Cowpea (Vigna unguiculata) is one of the world’s main crops, and it is a fundamental source of protein for semiarid regions population. In these regions, the use of high salts concentration water in irrigation systems is one of the major factors that contributes to reduced cowpea yield. One way to alleviate the negative effects of salinity is through the biostimulants application, which is a product that has beneficial substances to the plants metabolism. The aim of this study was to evaluate the application of biostimulant in cowpea cultivars under irrigation with saline water. The study was carried out in the Agrarian Sciences Center, of the Department of Agronomic and Forest Sciences of the Federal Rural University of the Semi-Arid, in the city of Mossoró, RN. The experimental design was completely randomized, with four replications. The treatments were arranged in 5 × 2 × 2 factorial scheme, with five doses of biostimulant (0, 15, 30, 45 and 60 mL L-1), two electrical conductivities of the irrigation water (0.5 and 5.0 dS m-1), and two cowpea cultivars (IPA-206 and BRS Guariba). The evaluated characteristics were: chlorophyll content index, stomatal conductance, net photosynthesis, internal CO2 concentration, transpiration rate, shoot height, stem diameter and shoot dry mass. The biostimulant application was not efficient in attenuating the salinity stress effect on the development of cowpea cultivars. The higher biostimulant concentrations along with the use of saline water increased the negative effects of salinity on the cowpea plants physiology. There was no difference between the cultivars regarding the tolerance to saline stress and the application of biostimulant.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Physiological Responses of Cowpea (Vigna unguiculata) Under Irrigation With Saline Water and Biostimulant Treatment

Sousa¹,

Ribeiro²,

Santos³

et al. 2018

JAS

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“…The height of the seedlings of yellow passion fruit plant ( Table 2) was influenced so much by the saline levels in the irrigation water as for the application of the biostimulants, it was observed that were verified in the absence of the application of the biostimulant to the smallest averages, however, the use of the same ones increased the growth in height, however it didn't lessen the noxious effect of the saline stress. In agreement with Oliveira et al (2017) the biostimulant use favors the growth and biomass production, but it doesn't lessen the effect of the saline stress and when used in high doses potentiate the effect of the salinity.…”

Section: Resultsmentioning

confidence: 62%

The Initial Growth of Passion Fruit Plant Irrigated With Saline Water and the Application of Biostimulants

Sá¹,

Leitão²,

Gomes³

et al. 2018

JAS

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The salinity is one of the stresses that more limits the income of the agricultural cultures, mainly in areas semiarid as the Northeast, though, it is known that the biostimulants are substances capable to alter the metabolism of the plant and to favor development under adverse conditions of stresses. In this context, it was aimed at with this work to evaluate the initial growth of the passion fruit plant irrigated with saline water and the application of biostimulants. The experiment was conducted at the Federal University of Campina Grande, campus Pombal, in factorial outline 5 × 3, corresponding to five salinity levels (S1 = 0.3; S2 = 2.3; S3 = 3.3; S4 = 4.3 and S5 = 5.3 dS m-1) and two biostimulants (B1 = Acadian and B2 = Crop Set) and treatment testifies (without an application of biostimulant). The dose used for each product was 4 ml L-1 of Acadian and 3 ml L-1 of Crop Set. It was used seeds of the passion fruit of the variety BRS-giant, sowed in containers of black polypropylene of 400 ml, containing sand and substrate Carolina Soil, in the proportion 1:1. For the 32 days after the sowing was determined the height, the root length, the fresh and dry mass (aerial, root and total) of plants, the biomass production and the index of tolerance the salinity. The data were submitted to the variance analysis of the test F at the level of 5% of probability, and when significant, the averages were submitted to the test Tukey for both factors, saline levels and biostimulants. The use of vegetable biostimulants increases the initial growth of the yellow passion fruit plant. The salinity in the irrigation water attacks the growth, however, I use of the biostimulant Crop Set lessens the harmful effect in passion fruit seedlings.

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“…However, the use of highly-saline water for irrigation, associated with the climatic conditions of the semi-arid region, reduces the production of the crop, since its physiology and biochemistry are damaged (Santos et al, 2009;Sousa et al, 2014). For instance, reduction in absorption, transport and assimilation of nutrients, led to reduction in photosynthesis and consequently in growth (Munns and Tester, 2008;Oliveira et al, 2017;Sá et al, 2017). Soil salinity occurs due to the accumulation of soluble salts, particularly Na + and Cl ions (Mesquita et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Phytomass accumulation and mineral composition of cowpea (Vigna unguiculata) under salt stress and phosphate fertilization

et al. 2019

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This study aimed to evaluate the effect of irrigation with saline water and phosphate fertilization on phytomass accumulation and tissue mineral composition of cowpea shoots. The research was carried out in a greenhouse utilizing randomized block design in a 5 x 3 factorial scheme consisting of five levels salinity of irrigation water (0.5 as control, 1.5, 2.5 3.5 and 4.5 dS m-1) and three doses of P2O5- (60, 100 and 140% from a recommended dose of 60 kg P2O5- ha-1), with 5 replicates. The plants were grown in pots up to flowering and then phytomass accumulation and mineral composition of cowpea (indicate cultivar name) shoot were measured. Irrigation with saline water from 0.8 dS m-1 reduced phytomass accumulation and mineral composition of cowpea plants, making the plants to be considered moderately tolerant up to EC 2.5 dS m-1. The 40% increase in recommended phosphorus dose promotes high iron and copper accumulations and, less sodium accumulation into tissues of cowpea shoot as influenced by saline stress. 60% reduction of the recommended dose of phosphate fertilizer increased the manganese and zinc accumulation of tissues of cowpea shoot under salt stress.

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Estresse Salino E Biorregulador Vegetal Em Feijão Caupi

Cited by 12 publications

References 13 publications

Physiological Responses of Cowpea (Vigna unguiculata) Under Irrigation With Saline Water and Biostimulant Treatment

Physiological Responses of Cowpea (Vigna unguiculata) Under Irrigation With Saline Water and Biostimulant Treatment

The Initial Growth of Passion Fruit Plant Irrigated With Saline Water and the Application of Biostimulants

Phytomass accumulation and mineral composition of cowpea (Vigna unguiculata) under salt stress and phosphate fertilization

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