Version 1
: Received: 10 July 2023 / Approved: 25 July 2023 / Online: 25 July 2023 (13:47:33 CEST)
How to cite:
Klein, J.D.; Cohen, S. Genetic Origin Affects the Reduction of Fruit Load in Young Grapevines Sprayed with an Organosilicone Surfactant and Ethephon. Preprints2023, 2023070672. https://doi.org/10.20944/preprints202307.0672.v1
Klein, J.D.; Cohen, S. Genetic Origin Affects the Reduction of Fruit Load in Young Grapevines Sprayed with an Organosilicone Surfactant and Ethephon. Preprints 2023, 2023070672. https://doi.org/10.20944/preprints202307.0672.v1
Klein, J.D.; Cohen, S. Genetic Origin Affects the Reduction of Fruit Load in Young Grapevines Sprayed with an Organosilicone Surfactant and Ethephon. Preprints2023, 2023070672. https://doi.org/10.20944/preprints202307.0672.v1
APA Style
Klein, J.D., & Cohen, S. (2023). Genetic Origin Affects the Reduction of Fruit Load in Young Grapevines Sprayed with an Organosilicone Surfactant and Ethephon. Preprints. https://doi.org/10.20944/preprints202307.0672.v1
Chicago/Turabian Style
Klein, J.D. and Shlomo Cohen. 2023 "Genetic Origin Affects the Reduction of Fruit Load in Young Grapevines Sprayed with an Organosilicone Surfactant and Ethephon" Preprints. https://doi.org/10.20944/preprints202307.0672.v1
Abstract
Combinations of Dilwet, an organosilicone surfactant, and ethephon, a hormonal compound often applied to fruit trees to thin the crop, were applied at full bloom to prevent fruit development in two young vineyards differing in elevation by 600 m. Each vineyard was planted with the same 19 red and 10 white grape cultivars from a range of countries of origin. Vineyard elevation did not affect response to treatment. A combined spray of 0.5% Dilwet with 0.04% ethephon reduced cluster number by an average of 85%, while weight of the remaining clusters was reduced by 63%, compared to unsprayed controls. Increasing the concentration of Dilwet to 1% reduced cluster number by 93% and cluster weight by 76%. There were significant differences in the response of cultivars to the treatments, depending on country of origin, with grapes originating in France responding better to higher concentrations of Dilwet. White grapes were more responsive than red grapes. These results highlight the need to test different cultivars and genetic origins of crops when examining the effects of new agricultural chemicals.
Keywords
Dilwet, full bloom, red and white grapes, Spain, France, Germany, Egypt, Italy, Portugal
Subject
Biology and Life Sciences, Horticulture
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
