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| Lao,MT; Jiménez,S. |
| Some technical and economic problems currently limit the use of substrates. The main problems include the lack of reciprocal adaptation of the cultivation technics and the substrate,the possible presence of pathogens, and the cost involved. To these we must add the ecological problems of the extraction areas, since there are no short-term renewable resources, especially in peat, the classic substrate. This has motivated the search for substitutes, especially amongst indigenous materials and those easily obtainable locally, such straws cereals, rice husk and cork residuous. The use of these substrates should be evaluated agronomically for: physical, chemical and cultural properties. The characterisation and use of almond shell (Prunus dulcis) as a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Substrate; Mixture; Peat; Expanded clay. |
| Ano: 2004 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572004000100008 |
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| Lao,MT; Jiménez,S. |
| Some technical and economic problems currently limit the use of substrates. The main problems include the lack of reciprocal adaptation of the cultivation technics and the substrate, the possible presence of pathogens, and the cost involved. To these we must add the ecological problems of the extraction areas, since there are no short-term renewable resources, especially in the case of peat, the classic substrate. This has motivated the search for substitutes, especially amongst indigenous materials and those easily obtained locally, such as cereals straw, rice husk and cork residues. The use of these substrates should be evaluated agronomically for: physical (total porosity, available water, air content, distribution of particles size, apparent density),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Substrate characterisation; Available water; Peat; Expanded clay. |
| Ano: 2004 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572004000100007 |
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| Lao,MT; Jiménez,S; Eymar,E; Fernández,EJ. |
| Suction cups are the only viable method to obtain in situ the soil solution along the culture in real time (24 h). The soil solution is the objective criterion to modify the nutrient solution, so that it can be an appropriate tool for fertirrigation management. The nutrient levels of the soil solution must be known to establish the appropriate approach to nutrients management. In this work, levels of pH, EC,NO3-,NH4+, H+2PO4- , K+, Ca2+, Mg2+, Na+ and Cl- of the soil solution of three tomato crops were followed for periods 1995/96 and 1996/97 culture estimated in a trial carried out during two years. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertirrigation management; Nutrient parameters; Nutrient solution; Tomato production. |
| Ano: 2004 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572004000100003 |
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