Effects of Seaweed Applications on Phenological Development Stages and Total Effective Temperature in Yuvarlak Çekirdeksiz Grape Variety Grown in Siirt Conditions

Year 2024, Volume: 7 Issue: 6, 657 - 663, 15.11.2024

Tuba Uzun Bayraktar , Gülcan Aygül Cuneyt Uyak

https://doi.org/10.47115/bsagriculture.1521171

Abstract

This study was carried out on the Yuvarlak Çekirdeksiz grape variety cultivated in Siirt University Implementation and Research Vineyard. Four different doses of liquid seaweed extract was applied at three different periods (control -0 ppm; 1st application period (before flowering) - 1000 ppm; 2nd application period (before flowering + after flowering)-1000 ppm + 1000 ppm = 2000 ppm; and 3rd application (before flowering + after flowering + veraison) -1000ppm + 1000 ppm + 1000 ppm = 3000 ppm). The effects of seaweed application on phenological stages and Total Effective temperature (TET) of Yuvarlak Çekirdeksiz grape variety were compared. When the plants with seaweed applications at different phenological periods were compared with the control, it was observed that plants with the first application period had a full flowering phase three days earlier and the veraison phase six days earlier. The Total Effective Temperature value between full bloom and veraison was determined to be between 659.78-819.98 day-degrees (dd), and it was determined that applying seaweed before flowering shortened the vegetation period compared to the control. In contrast, the other two applications extended the vegetation period.

Keywords

Seaweed, Phenological observations, Vegetation period

Supporting Institution

Siirt University Scientific Research Projects commission

Project Number

2021-SİÜFEB-024

Thanks

This study was supported by the Siirt University Scientific Research Projects (SRP) commission with the project number 2021-SİÜFEB-024.

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