Published in Scientific Papers. Series B, Horticulture, Vol. LXVIII, Issue 1
Written by Liliana PÎRCĂLABU, Steliana Paula BARBU, Irina BĂLĂNESCU, Georgeta TUDOR
The research was carried out in the period 2019-2023 in an experimental polygon with Chardonnay and Sauvignon varieties, in the conditions of a reddish-brown molic soil and Feteasca regala variety under the conditions of an anthrosol hortic, argic, vertic. According to the level of the rainfalls that induced a certain level of soil humidity, four water supplies were yearly applied, the irrigation amount ranging in between the limits of 1100-2225 cubic meters/ha. Therefore, during the whole green period, the irigated variants were supplied with a water reserve in the soil exceeding the minimal threshold by 50% of the Useful water capacity (UC). The results obtained evidenced the positive influence of irrigation both upon the grape yield and its quality. Increased yields of grapes were obtained in comparison with the not irrigated witness control, averagely ranging in between the limits of 12 - 64%, on the background of a better accumulation of sugars in grapes. Under severe conditions of water stress, the application of irrigation proves to be compulsory, in certain years even after the beginning of the grape ripening stage.
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