Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. IV
Written by Paula COJOCARU, Florian STATESCU, Gabriela BIALI
Hippophae rhamnoides is a shrub whose fruit is of special importance for the essential elements that it contains:sugars, organic acids, proteins, oils, beta - carotene, trace elements, vitamins, fatty acids, amino acids, etc. For thisreason, this fruit is used for direct food but, most often, in pharmaceutical industry. Although it is not a waterpretentious fruit in the climatic conditions of Central Moldavian Plateau where extremely drought periods randomlyalternates with water excess periods, overcoming them in principle, we can’t achieve high yields, without interferingwith irrigation works. In this context, the paper presents conceptual aspects and the technical implementation of a dripirrigation system on a slope terrain, of 20 hectares, located near Iasi. The irrigation system has, as a source, thephreatic water taking from an open basin, dug at the heal base, in which the water infiltrates through the borders. Fromthis pond, the water goes to a pit, from where, using a water motor pump, the water goes to a superior attitude where itis placed another open pond, having its bad and margins covered up with a impermeable membrane. The second pondhave two functions: storing up and warming the water. The water transmission and distribution system consist of 60irrigation pipes, 9 transmission pipes and 1 adduction pipe made of 4 sections with diameters that vary between 32 and225 mm. The total number of drippers is 33000, they are the type of drippers with counterbalance pressure so that auniform distribution of water to all Hippophae rhamnoides rows should be ensure (15). The pressure uniformity to theupstream end of the irrigation pipes was accomplished by a rigorous hydraulic design which it is presented in thepaper. The described system was designed by the authors and, in 2014, it was operational.
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