The purpose of the thesis was to find out the way water quality and quantity influence the quality and quantity of fruiting vegetables crops. An overview of literature revealed the amount of water a plant requires in order to develop normally during various phases of growth, various phenological phases as well as the amount of water required in relation to the number of successive growth cycles. The measurements were performed with the help of various methods and techniques. The work includes the descriptions of the species of two families (Solanaceae family and Cucurbitaceae family), which are included in the group of fruiting vegetables with a pertaining amount of water in the fruit. Studies analysing various ways of adding water, showed which systems are the most functional when it comes to water distribution relation to the irrigation intensity, decreasing loss and increasing water use efficiency. The thesis includes the results in terms of growing plants in greenhouses or open spaces, which are helpful for choosing irrigation method as well as in ensuring quantity. I reviewed how saline water and water stress affect the development of the plant, the size of the fruit, the amount of bioactive substances and other growth parameters. Fertilising the plant has decreased the influence of saline water and water deficit in the plant’s development with an attempt to ensure the best quality and quantity of the product.
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