ISHS Acta Horticulturae 537: III International Symposium on Irrigation of Horticultural Crops
GROWTH AND MINERAL UPTAKE OF SULTANINA GRAPEVINES IRRIGATED WITH RECLAIMED WASTEWATER AND THE POTENTIAL FOR USING SUCH WATER IN CRETE, GREECE |
| Authors: | N.V. Paranichianakis, A.N. Angelakis, K.S. Chartzoulakis |
| Keywords: | Vitis vinifera, irrigation, rootstock, water quality, wastewater reuse, mineral nutrition, salinity. |
| Abstract:
On the island of Crete, Greece, despite adequate precipitation, fresh water shortages exist due to temporal and spatial variations of the precipitation, high evapotranspiration (ET) rates and increased water demand, particularly for irrigation. Wastewater reclamation and reuse has the potential to provide new and cost-effective water resources for irrigation. For this reason, an experiment designed for determining the effects of irrigation with reclaimed water on growth and nutrition of "Sultanina" grapevines grafted on different rootstocks (1103P, 41B, and 110R) and irrigation levels (50%, 75%, and 100% ETc), grown under controlled conditions was performed. Vine growth (height and leaf area) was significantly reduced with reclaimed water. Irrigation with reclaimed water was sufficient to cover Mg, K and P requirements, while supplemental N fertilization was required. Salt toxicity symptoms effects, such as chlorosis and necrosis, were also observed. Significant differences in the uptake of K Mg, Na, and Cl between rootstocks were found. The high potential for reclaimed wastewater reuse, particularly in the eastern areas of the island is discussed. | |
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