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in Farmer's Inside Track

Podcast: Get to the root cause of why citrus leaves turn yellow

Ever wondered why your citrus leaves turn yellow? Dr Stephan Verreynne has the answers! From nutrient deficiencies to soil moisture, this podcast episode explores the causes and solutions for vibrant citrus trees

by Octavia Avesca Spandiel
31st January 2024
Dr Stephan Verreynne is the advisory manager at AECI Plant Health. Photo: Food For Mzansi

Dr Stephan Verreynne is the advisory manager at AECI Plant Health. Photo: Food For Mzansi

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Did you know that citrus trees may get yellow leaves for different reasons? It might not be getting enough nutrients, too little or too much water, or have diseases.

In this episode, Dr Stephan Verreynne, advisory manager at AECI Plant Health, looks into why citrus leaves may turn yellow and what farmers can do.

Verreynne explains, “There may be several causes of yellow leaves on citrus trees. The most common causes are nutrient deficiencies, soil moisture status, diseases, and other factors such as saline conditions in soil and water, and leaf age.”

Explore other causes

Non-nutrient-related causes of leaves turning yellow are also discussed.

“Too little water will rarely cause yellow leaves, but reduced uptake of nutrients may cause deficiencies that will lead to yellow leaves. Too little water may cause little new growth or poor growth. Too much water can be a bigger problem,” he explains.

Furthermore, over-irrigation pushes the oxygen out of the soil profile. Verreynne says without oxygen, root uptake of nutrients is reduced, which may lead to yellow leaves. The oxygen deficiency in the root zone puts trees under stress making them more susceptible to root diseases, like root and collar rot as well as nematodes.

In this episode, he also discusses:

  • Trees with phytophthora root rot;
  • Extreme saline conditions;
  • Citrus leaves lifespan and more.

Want to know more? Listen to the full episode of Farmer’s Inside Track. 

Option 1: Click here to listen on Spotify (all mobile and other devices).

Option 2: Click here to listen on any Apple device. 

Option 3: Click here to listen on Google Podcast.

ALSO READ: Agripreneur: Top meat processor aims to shine on global stage

Sign up for Farmer’s Inside Track: Join our exclusive platform for new entrants into farming and agri-business, with newsletters and podcasts.  

Octavia Avesca Spandiel

Raised by a close-knitted family who loves her deeply, Octavia believes in the philosophy of ‘I am because you are'. This former news and content editor for radio is now living her best life in the agricultural sector as a commercial journalist at Food For Mzansi. Her soft spot for poetry and passion for life, writing and traveling inspires her to write compelling stories. Apart from being an excellent writer, Octavia has an educational background in youth work and loves working with people. 

Tags: AECI Plant HealthCitrusCommercialising farmerPodcastTeach me
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