Using hydrogel and clay to improve the water status of seedlings for dryland restoration

Chirino, Esteban; Vilagrosa, Alberto; Vallejo, V. Ramón

doi:10.1007/s11104-011-0730-1

Cited by 95 publications

(58 citation statements)

References 40 publications

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“…A technology to potentially reduce the effect of drought stress, particularly on seedlings and saplings, could be the hydrophilic, cross-linked polymers known as super absorbent polymers or hydrogels. The term hydrogel is sometimes used for these compounds because when the dry crystals absorb water, they take on the consistency of a gel [13]. Hydrogels can retain up to 400 times their weight in water when saturated, but will not dissolve in water [14].…”

Section: Super Absorbent Polymers or Hydrogelsmentioning

confidence: 99%

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Reduction in Water Stress for Tree Saplings Using Hydrogels in Soil

Kargar¹,

Suresh²,

Legrand³

et al. 2017

GEP

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The effect of soil amendment with hydrogel on reducing water stress was tested for Siberian elm (Ulmus pumila) and silver maple (Acer saccharinum) saplings. The trees were planted in soils with one of two concentrations of hydrogel (0.5% or 1% dry weight) as compared to the control soil (0% of hydrogel) and watered either daily, weekly, or bi-weekly. Growth was monitored by measuring height and stem diameter. Stress was monitored by measuring SPAD readings and normalized difference vegetation index (NDVI), as proxy measures of chlorophyll content and photosynthetic activity, respectively. Water stress decreased NDVI (p < 0.05) but did not have a significant effect on SPAD readings. Soil with 0.5% concentration of hydrogel was positively associated with greater height and NDVI (p < 0.01) for both maple and elm trees. Hydrogels had a species-specific effect on SPAD readings. The interaction between hydrogel concentration and the watering regime had a significant effect on the height and NDVI (p < 0.01) of elms, but not maples. The improved performance of water-stressed tree saplings in hydrogel-amended soils was presumably due to the ability of hydrogels to absorb and then gradually release water and nutrients. This is of special interest for urban foresters, because water stress and nutrient deficiency are two important growthlimiting factors for street trees.

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Section: Super Absorbent Polymers or Hydrogelsmentioning

confidence: 99%

“…In spite of the beneficial aspects of hydrogels in the soil and their effects on plant growth, an overabundance of hydrogels can have negative consequences in some cases [13]. For instance, Sarvaš et al [22] observed high mortality (64%) of pine seedlings caused by an overdose of hydrogel.…”

Section: Super Absorbent Polymers or Hydrogelsmentioning

confidence: 99%

Reduction in Water Stress for Tree Saplings Using Hydrogels in Soil

Kargar¹,

Suresh²,

Legrand³

et al. 2017

GEP

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“…Successful seedling establishment is the greatest challenge to new plantings in the Mediterranean environment (Ceacero et al 2012), where seedling mortality rates are generally high after the first summer following outplanting (Chirino et al 2011). Newly established seedlings must be capable of "coupling" to the forest ecosystem in order to restore their physiological functioning and initiate growth (Grossnickle 2005).…”

Section: Introductionmentioning

confidence: 99%

Addressing post-transplant summer water stress in Pinus pinea and Quercus ilex seedlings

Pardos¹,

Calama²,

Mayoral³

et al. 2015

iForest

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“…The ameliorative effect of hydrogels for droughtstressed seedlings was demonstrated for Citrus (Arbona et al 2005), Quercus (Chirino et al 2011), Pinus (Roldan et al 1996, Hüttermann et al 1999, Sarvaš et al 2007, Fagus (Beniwal et al 2011), Populus (Shi et al 2010). However, the data for tree species representing the majority of forests in Central Europe are scarce, particularly in the context of prolonged and repeated drought periods.…”

mentioning

confidence: 96%

“…Water-absorbent STOCKOSORB®500 MICRO is a potassium ammonium polyacrylate/ polyacrylamide copolymer. Stockosorb is a crosslinked polymer with the ability to absorb a high volume of water due to network spaces in its crosslinked structure (Chirino et al 2011). The application of Stockosorb can provide more uniform substrate moisture, prevent leaching of water from soil and increase the water storage capacity of soil substrates to avoid or reduce drought-stress damage (Arbona et al 2005, Chirino et al 2011.…”

mentioning

confidence: 99%

The soil hydrogel improved photosynthetic performance of beech seedlings treated under drought

Jamnická¹,

Ditmarová²,

Kurjak³

et al. 2013

Plant Soil Environ.

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The effect of soil amendment with the STOCKOSORB®500 MICRO hydrophilic polymer on the photosynthetic traits in beech seedlings (Fagus sylvatica L.) during 50 days of dehydration was investigated. Dehydration was detected through osmotic potential (Ψ s ) in the assimilatory organs of beech seedlings. The addition of Stockosorb positively affected the CO 2 assimilation rate (A) and instantaneous water use efficiency (A/T), for severely drought-treated seedlings. In comparison with irrigated plants, the values of A of non-irrigated plants with Stockoasorb substrate decreased by 50%, and in non-irrigated plants with common substrate by 88%. The fast kinetics of chlorophyll a fluorescence indicated chronic photoinhibition under drought treatment without Stockosorb, while no significant changes in maximal quantum efficiency (F v /F m ) were recorded under drought treatment with Stockosorb. The actual quantum efficiency of PSII (Φ PSII ) markedly decreased in both treatments -with and without Stockosorb, though significant differences were found only between control treatments and drought treatment without Stockosorb. Moreover, the thermal energy dissipation (NPQ) was strongly limited under severe drought stress. The capacity to down regulate PSII functionality through non-photochemical quenching was maintained under drought treatment with Stockosorb. The results indicate that an amendment with soil conditioner significantly improved the photosynthetic performance of drought-stressed beech seedlings.

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Using hydrogel and clay to improve the water status of seedlings for dryland restoration

Cited by 95 publications

References 40 publications

Reduction in Water Stress for Tree Saplings Using Hydrogels in Soil

Reduction in Water Stress for Tree Saplings Using Hydrogels in Soil

Addressing post-transplant summer water stress in Pinus pinea and Quercus ilex seedlings

The soil hydrogel improved photosynthetic performance of beech seedlings treated under drought

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