BIO Web Conf.
Volume 13, 2019CO.NA.VI. 2018 - 7° Convegno Nazionale di Viticoltura
|Number of page(s)||6|
|Section||Vineyard Management and Adaptation to Climate Change|
|Published online||01 April 2019|
Vineyard protection with rain-shelter: relationships between radiometric properties of plastic covers and table grape quality
Universityof Foggia, Department of Science of Agriculture, Food Environment,
Via Napoli 25,
2 University of Bari, Department of Agricultural and Environmental Science, Via Amendola 165/A, 70126 Bari, Italy
3 University of Turin, Department of Agricultural, Forest and Food Sciences, Largo Braccini 2, 10095 Grugliasco (TO), Italy
* Corresponding author: email@example.com
The rise of unpredictable, heavy rainfalls increases incidence of diseases, berry rot, berry cracking, and enhance the need for rain shelters. The influence of the type of rain shelter on microclimate and grape quality is still little explored. The aim of this trial was to investigate the radiometric properties of a new type of cover, its effect on vineyard microclimate and on table grape quality, as compared with a reference cover, during a vintage with unusually abundant precipitation for Southern Italy. The new cover was characterized by lower transmissivity to IRshort radiation, and by a very higher transmissivity to UV radiation. It showed a tendency to decrease air temperature by 1 °C, increase RH by 2–3%, reduce VPD, and improve vine water status with respect to the reference. At harvest, grapes covered with the new sheet had higher TSS concentration, TSS / TA ratio, total skin polyphenol and flavonoids content, and berry skin resistance to rupture. Those berries, moreover, increased the level of volatile compounds such as linalool, typical of ‘Italia’ muscat aroma, and terpineol.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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