A comparison of different planting methods, including hydrogels, and their effect on eucalypt survival and initial growth in South Africa

Viero, Paul W.M.; Little, Keith M.

doi:10.2989/10295920609505256

Cited by 22 publications

(15 citation statements)

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“…Thus, soluble carbohydrates can be inverted into starch or biomass. Overall, our data are consistent with previous studies, which have demonstrated that application of hydrogels to soils improved plant performance (Arbona et al, 2005;Viero et al, 2006). For instance, Arbona et al (2005) found that application of hydrogels to the substrate increased water content, leaf water potential, root biomass, CO 2 assimilation and stomatal conductance of citrus trees.…”

Section: Sourcesupporting

confidence: 92%

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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Section: Sourcesupporting

confidence: 92%

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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“…Micropropagated E. grandis × E. nitens were more vulnerable to the combined effects of prolonged dry periods and air frost. Although it is common practice in forestry to use hydrogels during planting to minimise root water stress (see Vierro and Little 2006) In contrast to our survival findings, Watt et al (1995) suggested that hybrid vigour accounted for the 100% survival of micropropagated E. grandis × E. urophylla compared with 74% survival of macropropagated E. grandis × E. urophylla in the field in KwaMbonambi, KwaZulu-Natal (28°36′0″ S, 32°5′0″ E). Differences in precipitation across different sites (Searson et al 2004) may account for the differences in survival among eucalypt clones.…”

Section: Discussioncontrasting

confidence: 81%

“…The 50% survival observed 14 months after planting is far below the 90% required by the forestry industry to recognise a clone as productive (see Vierro and Little 2006). Plants produced via micropropagation were probably more vulnerable to air temperature extremes coupled with low rainfall.…”

Section: Discussionmentioning

confidence: 97%

Analysis of differences in field performance of vegetatively and seed-propagatedEucalyptusvarieties I: survival and leaf gas exchange

Mokotedi

Watt

Pammenter

2009

Southern Forests: a Journal of Forest Science

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“…A seleção de espécie ou clones mais resistentes ao estresse hídrico, aliado ao uso do polímero hidroretentor pode trazer grande benefício à silvicultura, principalmente em regiões com maior problema de déficit de chuva. Viero;Little (2006), avaliando a implantação de eucalipto a campo verificaram que o uso do polímero aumenta a sobrevivência das mudas. A melhor resposta também foi obtida quando realizada a irrigação.…”

Section: Variávelunclassified

Influência do Polímero Hidroretentor na Sobrevivência de Mudas de Eucalyptus dunnii sob Diferentes Manejos Hídricos

Navroski¹,

Araújo²,

Cunha³

et al. 2014

NATIVA

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RESUMO: O objetivo do estudo foi avaliar o efeito do uso do polímero hidroretentor em mudas de Eucalyptus dunnii cultivadas em vasos, relacionando com frequências de irrigações. Foram utilizadas mudas de aproximadamente 25 cm de altura, as quais foram plantadas em vasos preenchidos com 3,5 L de solo. O experimento foi realizado em delineamento inteiramente casualizado, com 15 repetições de uma planta em esquema bifatorial (2 x 3), em que os níveis do fator "A" referiram-se ao polímero hidroretentor (presença e ausência) e os níveis do fator "B" às frequências de irrigação (plantio, 6 e 3 dias). Após o plantio, foi realizada avaliação da sintomatologia do estresse hídrico nas plantas a cada dois dias. O uso do polímero proporcionou um atraso nos sintomas de estresse hídrico em todas as características avaliadas. A maior diferença dos sintomas de déficit hídrico com o uso do polímero foi observada na irrigação de plantio e na frequência de seis dias entre irrigações. Quando a irrigação é realizada mais frequentemente o uso do polímero apresenta menor efeito. Palavra-chave: Hidroretentor, irrigação, estresse hídrico.

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A comparison of different planting methods, including hydrogels, and their effect on eucalypt survival and initial growth in South Africa

Cited by 22 publications

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

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

Analysis of differences in field performance of vegetatively and seed-propagatedEucalyptusvarieties I: survival and leaf gas exchange

Influência do Polímero Hidroretentor na Sobrevivência de Mudas de Eucalyptus dunnii sob Diferentes Manejos Hídricos

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