| Summary: | Due to the special qualities that blueberry fruits have, both in alimentation and also for their pharmaceutical action, it is intended to expand and develop these cultures on larger areas in Romania. Researches conducted in this paper are designed to track the influence of water on the size and weight of blueberry berries in a field irrigated culture. This experimental field is located at the Tohat-Ulmeni farm, Maramureș County, consisting of 8 blocks randomized in three repetitions, thus comprising 24 plots, each plot having 10 shrubs planted on ridges. Experimental field irrigation is done by dripping in a system sustained by a water source from a well and controlled from a control panel through a pump distributing water from the main pipe through joints to the zonal pipes, from which watering is done by dripping on each ridge through nozzles situated at a 30 cm distance from each other. Weather conditions in the area during research were very hot and excessively hot, and in terms of rainfall weather was dry and excessively dry. From observations, in these heat and excessive drought, abiding by the project’s program and graduations of studied factors, we can observe that the medium diameter of blueberry berries varies between 10.63-20.8 mm for Hannah’s Choice breed and between 10.9-19.5 mm for Elliott breed; average berry width is between 8.5-16.6 for Hannah’s Choice breed and between 8.5-15.6 mm for Elliott breed and average weight of fruits is between 0.685-2.005 g for Hannah’s Choice breed and between 0.756-1.890 g for Elliott breed.
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