ISHS Acta Horticulturae 458: International Symposium on Water Quality & Quantity-Greenhouse
SUBSTRATE HYDRAULIC CONDUCTIVITY AS A PARAMETER FOR IRRIGATION OF CARNATION SOILLESS CULTURE |
| Authors: | O. Marfà, R. Savé, C. Biel, M. Cohen, R. Lladó |
| Keywords: | Substrates, unsaturated hydraulic conductivity, drought tolerance, drought avoidance, leaf gas exchange, watering regimes, matric potential, carnation |
| Abstract:
Previous work with edible crops have showed the relations between plant water status, and substrate water status : matric potential,  m, volumetric water content,  v, and substrate hydraulic conductivity, Kunsat.
The results obtained suggest the usefulness of Kunsat as a criterion for watering substrates.
The aim of this experiment was to study the hypothesis mentioned above, on a carnation bag culture.
Two types of perlites (coarse and fine) and three criteria for watering related with m (-2, -5 and -10 KPa) measured with electrotensiometers were used.
The combined effects of watering regimes and substrates on short and long time plant water relations and productivity were analyzed.
The usefulness of Kunsat as a complementary criterion for watering carnations grown in substrates is discussed.
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