Mass balance and tomato [Lycopersicon esculentum] quality under the drip irrigation with dilute sea water

The pollution of groundwater by the outflow of dilute sea water from the cultivated pots is worried. In this study, water and mass balance were measured and quality of tomatoes were measured. Tomatoes (Mini Carol) were seeded on December, 2006 and the drip irrigation with dilute sea water started in 12th April, 2007. After sea water irrigation, water and mass balance were measured. Water uptake amount by plant is large and soil water storage, absorption and elution amount were small. Mass concentration were condensed by the water uptake amount by plant roots. Diameter and Sugar concentration of fruits in May 7th, 2007 were measured. Brix value of tomatoes over the half of tomatoes right after sea water irrigation were over 10 value.