Temperature limitations in the use of hydrogels on leptosols in a semi-arid region of Brazil

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dc.contributor.authorVasconcelos Nascimento, Carla Danielle
dc.contributor.authorAnunciato Mota, Jaedson Cláudio
dc.contributor.authorVasconcelos Nascimento, Ícaro
dc.contributor.authorda Silva Albuquerque, Gustavo Henrique
dc.contributor.authorSimmons, Robert W.
dc.contributor.authordos Santos Dias, Carlos Tadeu
dc.contributor.authorGomes Costa, Mirian Cristina
dc.date.accessioned2021-06-17T14:56:54Z
dc.date.available2021-06-17T14:56:54Z
dc.date.issued2021-06-05
dc.description.abstractDue to their high-water retention capacity, hydrogels are considered promising soil conditioners to improve soil plant available water content in semi-arid environments; however, little is known about how soil temperature affects the functionality of hydrogels. In this study, the effect of soil temperature on physical attributes of soil amended with a Acrylamide-co-Potassium Acrylate hydrogel was evaluated. A laboratory experiment was installed in a scheme (4 × 4) x 4 - four soil temperatures (30, 45, 65 and 105 °C), four exposure times (40, 70, 100, and 130 days) with four repetitions. The test soil was a Leptsol with sandy loam texture and of the hydrogel was applied at a dose of 0.1% w w−1. Soil moisture at field capacity (θFC) and permanent wilting point (θWP), plant available water (AW), bulk density (BD), and soil porosity were evaluated. The resulting data was subjected to two-way analysis of variance. The hydrogel increased the θFC of the soil, from 0.14 to 0.19 m3 m−3 at 45 °C and 56 days. At 40 days, a minimum θWP (0.05 m3 m−3) was observed at 92 °C. In general, θFC increased, while the θWP decreased, providing improved soil water storage. Plant available water was up to three times higher in soil with hydrogel across a temperature range of 30–105 °C. In all treatments irrespective of temperature and exposure time, the soil BD and porosity were improved in comparison to the un-amended control. This constitutes an advantage in the use of the hydrogel as a soil conditioner. Even with the interaction of abiotic factors acting on the hydrogel, there are beneficial effects on the water storage capacity, soil BD, and soil porosity.en_UK
dc.identifier.citationVasconcelos Nascimento CD, Anunciato Mota JC, Vasconcelos Nascimento Í, et al., (2021) Temperature limitations in the use of hydrogels on leptosols in a semi-arid region of Brazil. Geoderma Regional, Volume 26, September 2021, Article number e00407en_UK
dc.identifier.issn0016-7061
dc.identifier.urihttps://doi.org/10.1016/j.geodrs.2021.e00407
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/16782
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.subjectSuperabsorbent hydrogelen_UK
dc.subjectPhysical soil propertiesen_UK
dc.subjectWater storageen_UK
dc.titleTemperature limitations in the use of hydrogels on leptosols in a semi-arid region of Brazilen_UK
dc.typeArticleen_UK

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