Artículo
Synthesis and evaluation of a superabsorbent-fertilizer composite for maximizing the nutrient and water use efficiency in forestry plantations
Tubert, Esteban
; Vitali, Victoria Andrea
; Alvarez, Mariano Sebastián
; Tubert, F.A.; Baroli, Irene Mabel
; Amodeo, Gabriela
Fecha de publicación:
01/2018
Editorial:
Academic Press Ltd - Elsevier Science Ltd
Revista:
Journal of Environmental Management
ISSN:
0301-4797
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Reducing fertilizer use is a priority in the quest for sustainable forestry systems. In short rotation Eucalyptus plantations, NPK pellets are routinely added to the seedling´s top soil layer at planting, potentially leading toincreased seedling mortality, nutrient loss and environmental degradation. To address this triple challenge, the development of efficient fertilization practices is essential. In the present work, we synthesized a crosslinkedacrylic-cellulosic superabsorbent composite (SAPH-BAL) containing small amounts of specific nutrients integrated in the polymer matrix. We analyzed the composite´s chemical and rheological properties, and assessedthe viability of Eucalyptus plantations supplied with it at planting. Physiological measurements confirmed the suitability of SAPH-BAL in greenhouse-grown potted seedlings subjected to different growth conditions,showing that it efficiently delivers nutrients while protecting seedlings from drought stress. Field experiments carried out at ten South American locations covering an ample range of environmental conditions confirmedthe beneficial effect of SAPH-BAL on growth and survival in comparison to the conventional fertilization scheme (superabsorbent + 75 g NPK). Furthermore, it was found that plants treated with SAPH-BAL were less affected by the differences in rainfall regimes during the experiments compared to those fertilized conventionally.To the best of our knowledge this is the first report describing the successful use of superabsorbents for root targeted delivery of fertilizers in forestry operations.
Palabras clave:
Eucalyptus
,
Superabsorbent polymer
,
Mineral nutrition
,
Water management
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Articulos(CIMA)
Articulos de CENTRO DE INVESTIGACIONES DEL MAR Y LA ATMOSFERA
Articulos de CENTRO DE INVESTIGACIONES DEL MAR Y LA ATMOSFERA
Articulos(IBBEA)
Articulos de INSTITUTO DE BIODIVERSIDAD Y BIOLOGIA EXPERIMENTAL Y APLICADA
Articulos de INSTITUTO DE BIODIVERSIDAD Y BIOLOGIA EXPERIMENTAL Y APLICADA
Citación
Tubert, Esteban; Vitali, Victoria Andrea; Alvarez, Mariano Sebastián; Tubert, F.A.; Baroli, Irene Mabel; et al.; Synthesis and evaluation of a superabsorbent-fertilizer composite for maximizing the nutrient and water use efficiency in forestry plantations; Academic Press Ltd - Elsevier Science Ltd; Journal of Environmental Management; 210; 1-2018; 239-254
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