The effect of a soil-amended hydrogel on the establishment of a<i>Eucalyptus grandis x E. camaldulensis</i>clone grown on the sandy soils of Zululand

Viero, Paul W.M.; Little, Keith M.; Oscroft, D. G.

doi:10.1080/10295925.2000.9631266

Cited by 15 publications

(12 citation statements)

References 11 publications

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“…Apostol (2009) found that hydrogel-treated seedlings of Quercus rubra had 80% greater root moisture than untreated roots following the transplant and desiccation period [27]. In our experiment, however, hydrogel was directly applied to the cutting as opposed to other reports where hydrogel was applied to the root plug [18] or to the pit at planting [25]. There could be several reasons for our decrease in growth at the loamy sand site.…”

Section: Discussioncontrasting

confidence: 45%

“…It has earlier been demonstrated that the use of a water-holding gel during the establishment enhanced survival by promoting contact with the transplant roots and the soil or by retaining soil water near the newly planted seedling [22][23][24]. Moreover, application of a hydrogel to eucalyptus seedling root balls proved sufficient to prolong seedling health and survival [18] and during drought conditions, application of a hydrogel improved the growth performance of eucalyptus [25] and citrus [26]. Apostol (2009) found that hydrogel-treated seedlings of Quercus rubra had 80% greater root moisture than untreated roots following the transplant and desiccation period [27].…”

Section: Discussionmentioning

confidence: 99%

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Effects of Direct Application of Fertilizers and Hydrogel on the Establishment of Poplar Cuttings

Böhlenius

Övergaard

2014

Forests

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Abstract:The aim of poplar plantations is to achieve high biomass production over a short rotation period. This requires low mortality and fast development of the transplants. The experiment described in this paper examines methods aimed at enhancing survival and development of Populus trichocarpa plants by application of fertilizers, a hydrogel or a combination of both to dormant cuttings just before planting. The experiment was carried out at two agricultural sites with different soil characteristics, a loamy sand and a silty loam. It was demonstrated that none of the treatments influenced survival or early growth at the silty loam soil site, and plant development was delayed by the solid fertilizer. At the site with loamy sand, the solid fertilizer negatively affected both survival and early growth. Hydrogel and the combination of hydrogel and the solid fertilizer also hampered early growth. Overall, treatments of poplar cuttings with hydrogel or fertilizers alone, or in combination, may not be a method to reduce poplar cutting mortality or to enhance early plant development on agricultural land. However, our results demonstrate that establishing poplar with cuttings as transplants can be used on both loamy sand and silty loam soils.

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Section: Discussioncontrasting

confidence: 45%

Section: Discussionmentioning

confidence: 99%

Effects of Direct Application of Fertilizers and Hydrogel on the Establishment of Poplar Cuttings

Böhlenius

Övergaard

2014

Forests

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“…The term hydrogel is sometimes used to describe crosslinked copolymers because when the dry crystals absorb water they take on the consistency of a gel (American Soil Technologies Inc. 2010). Hydrogels can absorb a volume of water 400 times their own weight (Bouranis et al 1995), and due to this high water-holding capacity (Chatzoudis and Rigas 1999) they have been used successfully in agriculture and forest restoration as soil amendments (Viero et al 2000;Günes 2007). Nevertheless, an overdose of hydrogels can produce negative effects in some cases (Sarvaš et al 2007).…”

Section: Introductionmentioning

confidence: 99%

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

2011

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“…Due to these properties, hydrogels have been used to aid forest establishment and seedling growth in drought-affected areas (Arbona et al, 2005;Hüttermann et al, 1999). The presence of hydrogels in soil prolongs the survival of plants and increases water use efficiency and dry matter production during periods of drought (Arbona et al, 2005;Hüttermann et al, 1999;Viero et al, 2000). Seedlings of Pinus halepensis treated with 0.4% (w/w) hydrogels survived drought stress twice as long as those in control soils (Hüttermann et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Ectomycorrhizal fungus (Paxillus involutus) and hydrogels affect performance of Populus euphratica exposed to drought stress

Luo

Jiang

et al. 2009

Ann. For. Sci.

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Abstract• Mycorrhizal fungi and hydrogels (water-absorbing polymers) can improve water availability for trees. The combination of both factors for plant performance under water limitation has not yet been studied.• To investigate the influence of the ectomycorrhizal fungus Paxillus involutus, hydrogel and the combination of both factors, a drought-sensitive poplar, Populus euphratica, was examined in this study.• After 16 weeks of inoculation, no ectomycorrhizas were found. Nevertheless, P. involutusinoculated poplars displayed increased concentrations of soluble sugars and osmolality, leading to an improved water status. Growth was diminished compared with non-inoculated P. euphratica. The presence of hydrogels in the rooting medium resulted in increased biomass and higher plant water content and decreased the osmolality of plant tissues. Drought markedly decreased water contents in rooting medium and plants, and leaf chlorophyll fluorescence, and stimulated the root growth, concentrations of soluble sugars and osmolality in plants. Under drought conditions, P. euphratica exhibited osmoregulation by accumulation of low-molecular-weight carbohydrates.• These data indicate that adding hydrogels to soils may improve the plant performance. The reasons for improved osmoregulation by fungi and hydrogels were probably related to their stimulating influence on the formation of soluble carbohydrates under drought conditions. Mots-clés :sécheresse / hydrogel / champignon mycorhizien / peuplier / hydrates de carbone Résumé -Le champignon ectomycorhizien Paxillus involutus et les hydrogels influencent les performances de Populus euphratica en condition de stress hydrique.• Les champignons mycorhiziens et les hydrogels (polymères absorbant l'eau) peuvent améliorer la disponibilité de l'eau pour les arbres. La combinaison des deux facteurs pour améliorer la performance des plants en conditions de limitation d'eau n'a pas encore été étudiée.• Pour étudier l'influence d'un champignon ectomycorhizien Paxillus involutus, des hydrogels et la combinaison des deux facteurs, un peuplier sensible à la sécheresse, Populus euphratica, a été étudié dans ce travail.• Après 16 semaines d'inoculation, aucune ectomycorhize n'a été trouvée. Néanmoins, l'inoculation de P. involutus aux peupliers a provoqué une augmentation des concentrations de sucres solubles et de l'osmolalité conduisant à une amélioration du statut hydrique. La croissance a été diminuée par rapport à des individus non inoculés. La présence d'hydrogels dans l'enracinement a entraîné une augmentation de la biomasse et une teneur supérieure en eau des plants et une diminution de l'osmolalité des tissus des plants. La sécheresse a diminué sensiblement le contenu en eau des racines, des plants ainsi que la fluorescence de la chlorophylle des feuilles, et stimulé la croissance des racines, les concentrations de sucres solubles et l'osmolalité chez les plants. En condition de sécheresse, P. euphratica a présenté une osmorégulation par accumulation d'hydrates de carbone de faible ...

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The effect of a soil-amended hydrogel on the establishment of aEucalyptus grandis x E. camaldulensisclone grown on the sandy soils of Zululand

Cited by 15 publications

References 11 publications

Effects of Direct Application of Fertilizers and Hydrogel on the Establishment of Poplar Cuttings

Effects of Direct Application of Fertilizers and Hydrogel on the Establishment of Poplar Cuttings

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

Ectomycorrhizal fungus (Paxillus involutus) and hydrogels affect performance of Populus euphratica exposed to drought stress

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