Abstract

The aim of this study is for increasing the productivity and the quality of Nasturtium Officicinale, Ipomoea Aquatica, at the same time, diminishing the nitrate residue and some heavy metals by using hydroponics. Nasturtium Officicinale, Ipomoea Aquatica grow and develop favorably in MS½ medium, the improvement the productivity of these vegetables at March-April period by hydroponics is a appropriate mean for product discounting in dry season. The indexes of nitrate residue in the laboratorial samples and in field samples all are not exceeded allowed limits of the Ministry of Agriculture and Rural Development.