Water and nutrient retention by Aquasoil and Stockosorb polymers

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dc.contributor.author Ghebru, M.G. (Michael Ghebremeskel)
dc.contributor.author Du Toit, Elsie Sophia
dc.contributor.author Steyn, J.M. (Joachim Marthinus), 1963-
dc.date.accessioned 2008-06-05T05:47:02Z
dc.date.available 2008-06-05T05:47:02Z
dc.date.issued 2007
dc.description.abstract Water retention and hydration rate of Aquasoil and Stockosorb polymers, the effects of these polymers on the water, ammonium and nitrate retention of a pine bark growth medium and the response of the polymers to fer¬tilizer solutions were investigated. Aquasoil retained 129 g of distilled water g"1 of polymer, whereas Stockosorb retained 216 g"1 of polymer. Both polymers reached their maximum capacity in about one hour. The polymers when combined with 1 or 2 g 500 g"1 of pine bark, improved the water retention capacity of the growth medium. However, longer time was required in the growth medium for the polymers to reach maximum capacity than in the distilled water. All polymer-amended pine bark media retained more ammonium, compared to non-amended media. The 2 g polymer treatment retained greater amounts of N03 than the lower rates. Retention of water by the Aquasoil® and Stockosorb® polymers was reduced to 88% and 86% of capacity compared to distilled water, whereas fertilizer solution reduced water retention to 53% and 42% of capacity. Soaking in distilled or tap water improved water retention of the polymers over fertilizer solutions. en
dc.format.extent 150754 bytes
dc.format.mimetype application/pdf
dc.identifier.citation Ghebru, MG, Du Toit, ES & Steyn, JM 2007, ‘Water and nutrient retention by Aquasoil and Stockosorb polymers’, South African Journal of Plant and Soil, vol. 24, no. 1, pp. 32-36 [http:// www.plantandsoil.co.za] en
dc.identifier.issn 0257-1862
dc.identifier.uri http://hdl.handle.net/2263/5796
dc.language.iso en en
dc.publisher South African Society of Crop Production, Soil Science Society of South Africa, Southern African Weed Science Society and Southern African Society for Horticultural Sciences en
dc.rights South African Society of Crop Production, Soil Science Society of South Africa, Southern African Weed Science Society and Southern African Society for Horticultural Sciences en
dc.subject Ammonium en
dc.subject Nitrate en
dc.subject Water en
dc.subject Growth medium en
dc.subject.lcsh Polymers en
dc.title Water and nutrient retention by Aquasoil and Stockosorb polymers en
dc.type Postprint Article en


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