Effects of Hydrogels on Tree Seedling Performance in Temperate Soils before and after Water Stress
| Autor: | Hillary Agaba, Martin Worbes, Lawrence J. B. Orikiriza, Aloys Hüttermann, John David Kabasa, Gerald Eilu |
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| Rok vydání: | 2013 |
| Předmět: |
0106 biological sciences
biology Chemistry Desiccation Non-Water Stress SAPs Soil Amendment Tree Species Amendment Biomass Picea abies 04 agricultural and veterinary sciences 15. Life on land biology.organism_classification 01 natural sciences Horticulture Fagus sylvatica Seedling Loam Soil water Shoot Botany 040103 agronomy & agriculture 0401 agriculture forestry and fisheries 010606 plant biology & botany |
| Zdroj: | Journal of Environmental Protection. :713-721 |
| ISSN: | 2152-2219 2152-2197 |
| DOI: | 10.4236/jep.2013.47082 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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