Open AccessTHE INFLUENCE OF HAIL AND TREATMENTS WITH AMINO-ACIDS ON THE FERTILITY AND BIOLOGIC BALANCE OF GRAPEVINES
Author(s) -
Sabin Baniță,
Radu E. SESTRAŞ,
I. Olteanu,
Anamaria Călugăr,
Claudiu Ioan Bunea
Publication year - 2020
Publication title -
romanian journal of horticulture
Language(s) - English
Resource type - Journals
eISSN - 2734-7664
pISSN - 2734-7656
DOI - 10.51258/rjh.2020.15
Subject(s) - shoot , vine , cultivar , vitis vinifera , horticulture , canopy , wine grape , biology , viticulture , wine , vineyard , botany , food science
Climatic accidents increase in frequency due to climatic changes. Hailstorms aretypically 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 tonatural hail, registered when shoots were 10-15 cm height. Four grape cultivars (Vitisvinifera 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 mostknown 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. Threetreatments with Delfan Plus (amino-acids complex) were applied on grapevinecanopy. Number of shoots/vine and number of fertile shoots/vine were counted andbiologic balance of grapevine indexes were calculated. Our results indicated thatnatural hail affect significantly the number of fertile shoots. Delfan Plus treatmentspositively influenced the number of shoots and fertile shoots. Delfan Plus treatmentshad little influence on Recovery index, vine Balance indexes and EnsuranceCoefficient after one single year of study. The capacity of recovery after hail fall, inthis case, is more influenced by the grape cultivar. The present work is the firstattempt to enhance our understanding on the vegetative responses of grapevines tothe use of biostimulants and to natural hail, which is an extreme and complex naturalphenomenon.