Effects of Stockosorb and Luquasorb polymers on salt and drought tolerance of Populus popularis

Shi, Yong; Li, Jing; Shao, Jie; Deng, Shumin; Wang, Ruigang; Li, Ni-Ya; Sun, Jian; Zhang, Hua; Hui-juan, Zhu; Zhang, Yunxia; Zheng, Xia; Zhou, Dazhai; Hüttermann, Aloys; Chen, Shao Liang

doi:10.1016/j.scienta.2009.12.031

Cited by 55 publications

(42 citation statements)

References 23 publications

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“…overall, hydrogel had a marginal effect on root biomass in clay and loam soils). Our results on improved survival time, root and shoot biomass growth during water stress conditions agree with previous studies in different media, [11,32,33,34]. Despite the differences (e.g.…”

Section: Hydrogel Effect On Seedling Survival and Biomass In Water Stsupporting

confidence: 92%

“…This partly accounts for the observed biomass increases in sand and loam soils amended with hydrogel during desiccation. Reduced biomass in hydrogel amended soils appears to be related to the ability of hydrogels to delay drought stress effects [33]. However, the fact that hydrogels enhanced total biomass in different soils before and after desiccation, implies that hydrogels…”

Section: Resultsmentioning

confidence: 99%

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Effects of Hydrogels on Tree Seedling Performance in Temperate Soils before and after Water Stress

Orikiriza¹,

Agaba²,

Eilu³

et al. 2013

JEP

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Super Absorbent Polyacrylate (SAP) hydrogels absorb and store water thereby aiding plant establishment when incurporated in the soil. The effect of cross-linked SAP hydrogel amendment on the performance of tree seedlings of Picea abies, Pinus sylivestris and Fagus sylvatica grown in temperate soils under water stress and non-water stress periods was investigated in a green house. The objective was to compare the root and shoot biomass of seedlings of the three species grown in sand, loam and clay soils amended with 0.4% w/w hydrogel in non water stress conditions as well as survival, root and shoot biomass after subjection to water stress. The seedlings were grown for 16 weeks, harvested and shoot as well as root biomass determined before water stress. The seedlings were also subjected to water stress and their biomass assessed at death following the water stress. The results showed that root and shoot biomass were generally higher in hydrogel amended soils compared to the controls. Root and shoot biomass of Fagus sylvatica was lower compared to Picea abies and Pinus sylivestris before water stress. The 0.4% hydrogel amendment significantly increased species' survival in the different soils studied. Although root biomass was higher in hydrogel amended sandy soil compared to other soils, P. sylivestris and F. sylvatica shoot biomass were higher in hydrogel amended clay and loam soils compared to the sandy soil after water stress. Biomass was higher in sand compared to loam and clay soils under non-water and water stressed conditions. Since SAP hydrogel amendment improved the survival and biomass production of tree seedlings before and after water stress, use of SAPs could be promoted to enhance seedling production in water stress and non-water stress environments.

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Section: Hydrogel Effect On Seedling Survival and Biomass In Water Stsupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Effects of Hydrogels on Tree Seedling Performance in Temperate Soils before and after Water Stress

Orikiriza¹,

Agaba²,

Eilu³

et al. 2013

JEP

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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.…”

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confidence: 96%

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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“…A rapid root system development determines plant growth and survival in any soil type by enhancing lateral and vertical access of water in the soil layers through roots (Thomas, 2008 andOrikiriza et al, 2009). At this concern, and as sandy soil has low water-holding capacity, the hydrogel application at different levels to the rooting medium may absorb and store large amount of water during both irrigation rates and then release water progressively when needed (Al-Humaid, 2005, Al-Humaid and Moftah, 2007, Luo et al, 2009, Lucero et al, 2010and Shi et al, 2010. This feature of hydrogel helps in improving the root growth and consequently the entire plant growth traits.…”

Section: Plant Growth Traits Statusmentioning

confidence: 99%

“…In other words, hydrogel functions as an additional water reservoir for the soil-plantair system (Luo et al, 2009). Due to these properties, hydrogel improves water use efficiency (irrigation effectiveness in terms of plant yield) and dry matter production of plants under drought affected areas (Luo et al, 2009 andShi et al, 2010). Moreover, hydrogel may last a few years in the soil before they are degraded into non-toxic components (Luo et al, 2009).…”

mentioning

confidence: 99%

Improving some Physical Properties of Sandy Soil and Conocarpus erectus L. Plant Growth by the Application of Hydrogel

2013

Egypt.J. Soil Sci.

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OIL physical properties of a growing medium are important ……. for optimal plant growth. The present factorial pot experiment was carried out at the Faculty of Agriculture, Cairo University, Giza, Egypt, during two successive seasons of 2010 and 2011. The study aimed at investigating the effects of synthetic commercial amendment (hydrogel) levels applied under two irrigation rates, to assess their influence on some sandy soil physical properties and buttonwood (Conocarpus erectus L.) seedlings growth traits. The irrigation rates were 65 and 35% of the available soil moisture depletion (ASMD), whereas the hydrogel levels were 0.00 (control), 0.05, 0.10 and 0.20%. Soil physical properties were evaluated by determining the total porosity, field capacity, wilting point, available water, and soil bulk density. Moreover, the plant height, root length, shoots and roots fresh and dry weights and shoots: roots ratio, as expressions of seedlings growth responses, were also measured. Generally, the sandy soil physical properties as well as the seedlings shoot and root growths were improved by increasing hydrogel concentration in the soil when compared to their controls. The two irrigation rates also affected both of the soil properties and the seedlings growth. Furthermore, the highest concentration of the hydrogel amendment under 35% ASMD prolonged the soil water loss time; increased the field capacity, which reflected on the soil available water; encouraged formation of aggregates that, in turn, decreased the soil bulk densities; and hence improved the seedling shoots and roots growth biometrics. This study demonstrates also that the addition of hydrogel to planting medium under different irrigation rates increases water use efficiency by preventing applied moisture from infiltrating beyond plant root zones and maximizing the portion of applied water available for plant uptake. Thereby amended sandy soil with hydrophilic-gel can be used in arid and semi-arid areas to provide a better environment for seedlings to grow.

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Effects of Stockosorb and Luquasorb polymers on salt and drought tolerance of Populus popularis

Cited by 55 publications

References 23 publications

Effects of Hydrogels on Tree Seedling Performance in Temperate Soils before and after Water Stress

Effects of Hydrogels on Tree Seedling Performance in Temperate Soils before and after Water Stress

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

Improving some Physical Properties of Sandy Soil and Conocarpus erectus L. Plant Growth by the Application of Hydrogel

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