Published in Scientific Papers. Series B, Horticulture, Vol. LXVIII, Issue 1
Written by Georgeta Mihaela BUCUR, Elena DELIAN, Marinela Vicuța STROE, Marian ION, Liliana PÎRCĂLABU
Climate change, global warming with the increase of thermohydric stress during the ripening of the berries, the greater frequency of extreme climatic phenomena, etc., produce physiological and biochemical changes in the growth and fruiting of the vine, influencing the production of grapes and especially its quality. The experience carried out in 2022 and 2023 on the 'Fetească regală’, under the conditions of the experimental plantation of the UASVM Bucharest Romania, aimed at mitigating the effects of summer thermohydric stress, by applying treatments with kaolin and zeolite in concentrations of 3 and 5 %. After applying the treatment, the intensity of photosynthesis and transpiration was determined, the quantity and quality of the harvest. The variant zeolite 5% stood out, where intensity of photosynthesis increased by 7.6 μmol CO2 m-2 s-1 in 2022 and 4.45 μmol CO2 m-2 s-1 in 2023, compared to the control; and the transpiration rate decreased by 2.24 mmol H2O m-2 s-1 compared to the control, in 2022, for the zeolite 3% variant. Also, the concentration of sugars decreased by 3.67ºBrix in 2022 and 1.66 in 2023, for the zeolite 3 and 5% variants.
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