Clementines – Critical chilling risk point is below 12C, yet CropAid AntiFrost protected down to 8C in Tunisia

Posted on: February 6, 2026    •    Posted in: Trial Results

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🍊 Field Report: CropAid AntiFrost Performance on 45Ha Clementine Orchards in Tunisia

CropAid AntiFrost: Critical point below 12C, protected from chilling morning dew at 8C. Tunisia

 

Submitted by: Hassen Ghidhaoui, Fertiplant SRL – Tunisia

 

Clementine CultivarChill damage occurs at 12C or lessLowest Chill Temperature experiencedChill ProtectionMorning Dew Protection

Amira

12C

8C

Yes

Yes

Marisol

12C

8C

Yes

Yes

 

Clementines on a tree
Clementines on a tree

🌡️ Overview

During the 2025–2026 season, Fertiplant SRL’s customers applied CropAid AntiFrost across 45 hectares of clementine orchards in the Testour region of Northwest Tunisia 🍃. Even with winter temperatures dropping to 8°C—well below the 12°C chilling‑injury threshold for these Clementines—treated crops showed zero chilling or dew damage. 🍊

🍃 Climatic Highlights

  • Lowest temperature recorded: 8°C
  • Clementine sensitivity: Chilling can begin at 12°C or below on these Cultivars.
  • Seasonal risk: Morning dew in December/January may damage fruit 💧🍊
  • Outcome: No fruit damage thanks to preventive treatment 🌟

🍊 Crop Treatments & Results

1. Clementine – Variety Amira 🍊

  • Region: Testour, Northwest Tunisia
  • Harvest Window: January–February
  • Treatment Plan:
    • 3 applications of CropAid AntiFrost
    • 500 ml/100 L water (5 L/ha)
    • Applied every 15 days
    • Approx. 416 trees/ha
  • Application Dates:
    • 20/12/2025
    • 05/01/2026
    • 20/01/2026
  • Results:
  • No chilling damage despite low temperatures
  • No dew‑related fruit issues 💧

Clementine fruits on a branch of a tree

2. Clementine – Variety Marisol 🍊

  • Region: Testour, Northwest Tunisia
  • Harvest Window: December
  • Treatment Plan:
    • 3 applications of CropAid AntiFrost
    • 500 ml/100 L water (5 L/ha)
    • Applied every 15 days
    • Approx. 416 trees/ha
  • Application Dates:
    • 15/11/2025
    • 05/12/2025
    • 20/12/2025
  • Results:
    • Full protection throughout the cold period
    • No chilling, or dew damage

🌟 Conclusion

Across all 45 hectares of orchards, CropAid AntiFrost delivered outstanding protection against winter stress. Growers reported, zero chilling injury, and no dew‑related losses on both Amira and Marisol varieties 🍊🍃.

CropAid AntiFrost continues to prove itself as a reliable, effective Biostimulant for citrus crops during critical winter periods.

Do you have cold, frost, heat protection for your crops in place?  Visit the CropAid website.