Early Marketable Yield and Better Berry Skin Color of ‘Redglobe’ Grapevines Cultivar Grown under Warm Climate by Application of Sulis.

Journal of Plant Production


Mohamed A. M.A. and Heba S. Sayed
Horticulture Dept., Faculty of Agric., Minia Univ., 61-519 Minia, EGYPT.
Publish Date; 2021
Coloration of red grapes under high temperature and narrow day/night temperature range conditions is a great challenge. The aim of the investigation was to test the effect of Sulis® fertilizer which has recently commercially released in Egypt on the color of ‘Redglobe’ grapes. In 2018, the treatments were water (control), 1 ml L-1 Sulis®, or 2 ml L-1 Sulis®. ‘Redglobe’ berries were darker red color due to Sulis® treatments, with no different effect between both Sulis® concentration. While, The 2019 treatments were water (control), 150 mg l-1 ABA + 250 mg l-1 Ethephone, 1 ml L-1 Sulis®+ 250 mg l-1 Ethephone, or 1 ml L-1 Sulis®. During both seasons, the treatments gave the same effect on physical berry characteristics. The bunches sprayed with ABA or Sulis® +ethephone were harvested 10 days earlier than those treated with Sulis® alone, and 20 days earlier than the control clusters. The treatments gave higher packable yield percentages at first pick harvest and SSC/TA ratio than the control. L*, a*, b*, C* and h ̊ of berry color traits were decreased due to the treatment applications. Sulis®+ethephone and Sulis® treatments increased the red color index and anthocyanin content in berry skin than the control treatments. Sulis® fertilizers is promising as a coloring agent in grapevines cultivation.
Redglobe, Grapes color, Ethephon, Sulis®, Berry Skin
Main Subjects
Suils, Grapes, Crop Nutrition