Affiliation:
1. Faculty of Horticulture, Advanced Horticultural Research Institute of Transylvania, Viticulture and Oenology Department, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca
2. Crama SERVE
3. Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca
Abstract
Climatic accidents increase in frequency due to climatic changes. Hailstorms are
typically localized events and are known few studies about their effect on grapevine.
The objective of this study was to examine the vine vegetative balance responses to
natural hail, registered when shoots were 10-15 cm height. Four grape cultivars (Vitis
vinifera L.), two for red wine (Feteascǎ Neagrǎ, Pinot Noir) and two for white wine
(Chardonnay, Tǎmȃioasǎ romȃneascǎ) were studied in Dealu Mare, one of the most
known vineyards in Romania. Visibly, the extent of the hailstorm damage was great,
enough to injure or remove about 90% of shoots growth till hail fall. Three
treatments with Delfan Plus (amino-acids complex) were applied on grapevine
canopy. Number of shoots/vine and number of fertile shoots/vine were counted and
biologic balance of grapevine indexes were calculated. Our results indicated that
natural hail affect significantly the number of fertile shoots. Delfan Plus treatments
positively influenced the number of shoots and fertile shoots. Delfan Plus treatments
had little influence on Recovery index, vine Balance indexes and Ensurance
Coefficient after one single year of study. The capacity of recovery after hail fall, in
this case, is more influenced by the grape cultivar. The present work is the first
attempt to enhance our understanding on the vegetative responses of grapevines to
the use of biostimulants and to natural hail, which is an extreme and complex natural
phenomenon.
Publisher
Academia de Stiinte Agricole si Silvice 'Gheorghe Ionescu-Sisesti'
Cited by
2 articles.
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