Potential of superabsorbent hydrogels to improve agriculture under abiotic stresses

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dc.contributor.authorNascimento, Carla Danielle Vasconcelos
dc.contributor.authorSimmons, Robert W.
dc.contributor.authorFeitosa, Judith Pessoa de Andrade
dc.contributor.authorDias, Carlos Tadeu dos Santos
dc.contributor.authorCosta, Mirian Cristina Gomes
dc.date.accessioned2021-03-25T15:54:01Z
dc.date.available2021-03-25T15:54:01Z
dc.date.issued2021-03-23
dc.description.abstractHydrogels are a promising management option to increase the efficiency of water use in agriculture in arid and semi-arid regions. However, abiotic factors may affect hydrogel efficacy. The effect of abiotic stress on the swelling and residual acrylamide in hydrogels was evaluated. The treatments were three hydrogels (A, B and C), four temperatures (20, 30, 40 and 65 °C) and two salinities (0.003 and 3.0 dS m−1). The swelling degree and the residual acrylamide concentration of the hydrogels were measured. Data were analyzed with univariate and multivariate statistics. The swelling order of hydrogels under low salinity was A>C>B; at high salinity was B>A>C. All hydrogels presented swelling reduction at high salinity, with swelling reductions in A and C of 97% and 85%, respectively, while B presented a swelling reduction of 37% at 20 °C and greater than 89% at higher temperatures. Hydrogel B achieved good swelling under saline conditions, but only at 20 °C. Thus, the temperature tolerance of this hydrogel should be improved so it can be used to improve water use efficiency in regions with high temperatures and salinity levels. Residual acrylamide levels of hydrogels decreased by 95% over 30 days, being safe for agricultural applicationsen_UK
dc.identifier.citationNascimento CDV, Simmons RW, de Andrade Feitosa JP, et al., (2021) Potential of superabsorbent hydrogels to improve agriculture under abiotic stresses. Journal of Arid Environments, Volume 189, June 2021, Article number 104496en_UK
dc.identifier.issn0140-1963
dc.identifier.urihttps://doi.org/10.1016/j.jaridenv.2021.104496
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/16507
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectWater use efficiencyen_UK
dc.subjectSoil conservationen_UK
dc.subjectSoil scienceen_UK
dc.subjectAnionic co-polymersen_UK
dc.titlePotential of superabsorbent hydrogels to improve agriculture under abiotic stressesen_UK
dc.typeArticleen_UK

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