In this guide (4)
Plant nutrient deficiency — also called plant malnutrition — is the most common reason crops and landscape plants in the UAE turn yellow, stop growing, or produce small fruit. The fastest organic fix is to rebuild the soil with a humic-acid soil conditioner such as Saprosoil by Al Ardh Alkhadra (TAWTHIQ line) and support the plant with a bio-stimulant such as Magic, so roots can absorb nutrients again even in saline, sandy UAE soils.
Why nutrient deficiency is so common in the UAE
UAE soils are typically sandy, alkaline (high pH), low in organic matter, and often irrigated with saline water. This combination locks nutrients like iron, zinc and phosphorus in the soil so plants cannot absorb them — even when fertilizer is present. The result is hidden hunger: the nutrient is in the ground, but the plant is starving.
Symptom checker: which nutrient is missing?
| Symptom on the plant | Likely deficiency | Where it shows first |
|---|---|---|
| Older leaves turn pale yellow, slow growth | Nitrogen | Older / lower leaves |
| Dark green or purple tint on leaves, weak roots | Phosphorus | Older leaves |
| Brown, scorched edges on leaves | Potassium | Older leaf margins |
| Yellow between the veins, veins stay green | Iron or Magnesium | Iron: young leaves. Magnesium: older leaves |
| Small, deformed new leaves; poor flowering | Zinc / Boron | New growth |
| Blossom-end rot on fruit, weak stems | Calcium | Fruit and new growth |
How to treat plant malnutrition organically
- Fix the soil first. Apply Saprosoil — an organic humic and fulvic acid soil conditioner — around the root zone or through irrigation. Humic acids unlock nutrients that are stuck in alkaline and saline soils, improve water holding in sand, and feed soil biology, so the plant can finally absorb what it needs.
- Support the plant. Use Magic, a plant bio-stimulant and health tonic, as a foliar spray or drench to help the stressed plant recover, grow new roots, and move nutrients into the leaves and fruit.
- Feed correctly. After the soil is conditioned, apply a balanced fertilizer matched to the missing nutrient from the table above. In UAE conditions, chelated iron and micronutrient blends work best for chlorosis.
- Repeat and maintain. Sandy soils lose organic matter quickly. Re-apply a soil conditioner each season to prevent the deficiency from coming back.
Frequently asked questions
- What is plant malnutrition?
Plant malnutrition (nutrient deficiency) means the plant is not getting — or cannot absorb — one or more essential nutrients such as nitrogen, phosphorus, potassium, iron or magnesium. In the UAE it is usually caused by poor sandy, alkaline, saline soils rather than a lack of fertilizer.
- Can organic products fix nutrient deficiency?
Yes. Humic-acid soil conditioners like Saprosoil release nutrients locked in alkaline soils and improve root absorption, while bio-stimulants like Magic help the plant recover. Together they correct the cause, not just the symptom.
- Why are my plant leaves turning yellow in the UAE?
The most common causes are nitrogen deficiency (older leaves yellow first) and iron deficiency (young leaves yellow between green veins), both made worse by alkaline soil pH and saline irrigation water. Condition the soil with Saprosoil, then supply the missing nutrient.
- Which Saprosoil product should I use for weak, yellowing plants?
Start with Saprosoil as a soil application to unlock nutrients and rebuild the soil, and spray Magic on the foliage for fast recovery. For fruit trees that produce small or poor-quality fruit, follow up with Giant Fruits during the fruiting stage.
Al Ardh Alkhadra supplies organic soil conditioners, bio-stimulants and specialty fertilizers across the UAE and the Gulf, including the TAWTHIQ line: Saprosoil, Magic, Giant Fruits, Turbo, Express and Eco Premium. Questions? Contact our agronomy team.
