Articles

YIELD AND FRUIT QUALITY OF TOMATO GROWN IN GREENHOUSE WITH SALINE IRRIGATION WATER

Article number
614_104
Pages
699 – 704
Language
English
Abstract
The aim of this article was to analyse the influence of irrigation water regime and water salinity on yield and fruit quality of a tomato crop (Marmande Raf) growing in an unheated plastic greenhouse in Sicily (south Italy). Two salinity levels of irrigation water (electro conductivity EC=1.6 dS m-1 and 6.0 dS m-1, respectively) and two irrigation regimes (100% of maximum evapotranspiration, ETM, and 100% ETM plus leaching requirements, Lr) were studied.
Total yield cumulated over the harvest periods was significantly higher for EC=1.6 dS m-1 than EC=6.0 dS m-1 and for 100% ETM + Lr than 100% ETM. Nevertheless, when plants were irrigated with both high saline concentration of water and high water supply (100% ETM + Lr) crop yield was similar to that observed on plants grown under low salinity (EC=1.6 dS m-1 ) and 100 % ETM but without considering Lr requirements.
Fruit quality (dry matter content, reducing sugars concentration, tirable acidity and firmness) was improved with greater salinity, but was unaffected by water irrigation regime with the exeption of dry matter.
These results suggested that using an irrigation regime equivalent to 100% ETM + Lr reduced the negative influence induced by high salinity of the irrigation water on yield, still keeping the beneficial effect on fruit quality.

Publication
Authors
G. Restuccia, M. Marchese, G. Mauromicale, A. Restuccia, M. Battaglia
Keywords
leaching requirement, yield component, fruit dry matter content, reduced sugar, acidity.
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