Simulated Abiotic Injury Alters Yields of Southern Interspecific Hybrid Grape Cultivars

Autor: Becky Carroll, Eric T. Stafne
Rok vydání: 2019
Předmět:
Zdroj: Horticulturae, Vol 5, Iss 2, p 44 (2019)
Horticulturae
Volume 5
Issue 2
ISSN: 2311-7524
Popis: Climate change, including more volatile weather and longer growing seasons, is causing stress on grapevines (Vitis spp.). A change in harvest timing of wine grapes can have significant consequences. Thus, two methods (crop forcing and complete removal of green tissue) were employed to simulate abiotic vine injury. The harvest of bunch grapes in Mississippi occurs during July, a very hot month. &lsquo
Miss Blanc&rsquo
and &lsquo
Villard Blanc&rsquo
had four different crop forcing treatments imposed to determine yield amount and harvest timing. All treatments reduced yield. Harvest was delayed by 50 days, a potentially positive shift that was not enough to escape high temperatures. &lsquo
had no flower or fruit development after crop forcing treatments in May and June. &lsquo
yields were also significantly reduced by these treatments. Removal of green tissue to simulate injury from weather events such as frost, freeze, wind, or hail in both Mississippi and Oklahoma revealed that lost growth could reduce yields from 19% to 81%, which could influence grape grower management decisions.
Databáze: OpenAIRE