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| Oberpaur,Christel; Fernández,Carolina; Délano,Guillermo; Arévalo,M.Eugenia. |
| The most frequently used substrate for the production of covered root seedlings is peat, the extraction of which is under scrutiny due to its negative environmental impact; however, the use of Sphagnum moss in adequate mixtures constitutes a possible alternative. Lettuce seeds (Lactuca sativa L.) were sown in Polystyrene trays (240 alveoli, 24 cm³) to test four substrates, 50% Sphagnum moss mixed with 50% humus or compost and 60% Sphagnum moss with 40% humus or compost, and commercial peat was used as a control. A dose (2.5 or 3.5 gL-1) of controlled-release fertilizer (CRF) was added to all substrates except for the control mix, and the substrates were subsequently irrigated with or without a fertilizer solution. The study was conducted under shaded... |
| Tipo: Journal article |
Palavras-chave: Compost; Humus; Lettuce; Slow release fertilizer; Sphagnum moss. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000300004 |
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| Oberpaur,Christel; Puebla,Víctor; Vaccarezza,Flavia; Arévalo,María E. |
| Nursery producers grow plants in containers, mainly using substrates based on peat. In order to replace the use of peat, diverse mixtures of substrates combining different proportions of the moss Sphagnum magellanicum Brid. (40, 50 and 60%) and alternative organic materials, such as compost, humus and composted pine bark, were tested. In the frst trial under laboratory conditions, conducted in October 2006, the physicochemical characteristics of nine initial mixtures, including a control, were determined. Five mixtures, with similar physicochemical conditions as the control, and a commercial peat mixture, were selected by the application of Euclidean minimum distances. The fnally selected mixtures were three combinations of moss with composted pine bark... |
| Tipo: Journal article |
Palavras-chave: Compost; Composted pine bark; Humus; Lactuca sativa; Lettuce; Moss; Sphagnum. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000100012 |
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| Gómez,César; Oberpaur,Christel. |
| Los almacigos de cebolla (Allium cepa) se siembran en suelo o en contenedores (alvéolos) de reducido volumen, en alta densidad, sin considerar el efecto del tamaño del contenedor en el crecimiento del cultivo. Con el propósito de estudiar el efecto del sistema y densidad de la almaciguera se realizaron dos ensayos (almacigo y transplante) en la Región Metropolitana (entre 33,3° y 34° lat. sur), Chile. Se empleó cebolla cv. Grano de Oro, cultivar de día largo destinado para guarda, en la temporada 2004-2005. La siembra de almacigos para transplante a raíz cubierta se estudió en contenedores con 286 (10 cm³), 432 (10 cm³) y 814 (5 cm³) alvéolos, correspondiendo a 1144 (DI), 1728 (D2) y 3256 (D3) plantas/m² y para trasplante a raíz desnuda en cajoneras, con... |
| Tipo: Journal article |
Palavras-chave: Almacigo; Bandeja; Cajonera; Densidad de planta; Transplante. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202007000300004 |
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