✅ Check the durian leaves. What elements do these symptoms lack?

Check the durian leaves. What elements do these symptoms lack?

Observing nutrient deficiency in durian is central to quality garden management, especially durian that requires leaf integrity for food accumulation and fruiting. The following is a summary of common nutrient deficiencies by periodic group.

1. Main nutrient group

- Nitrogen (N), the leaves are smaller, the leaves turn whole yellowish green or pale yellow, starting from the old leaves below up to the shoots, the cargranate trees.

- Phosphorus (P) The leaves are unusually dark green, sometimes out magenta on the edges of old leaves. The leaves are thin and slender, smaller. The roots grow slowly.

- Potassium (K) Burnt leaf margin, starting from leaf tip and old leaf margin, leaves are pale yellow from edge towards midleaf line, durian effect is small, filling, poor taste.

2. Secondary nutrient group

Symptoms often appear in old or relatively young leaves, depending on the movement of the elements.

- Magnesium (Mg): Interveinal Chlorosis occurs. The leaf line is also green, but the leaf texture is yellow "V-shaped." It is found on the old leaves first. It is usually born when the durian tree pulls too much nutrients to feed the child.

- Calcium (Ca): Showing symptoms of mild shoots, newly broken shoots shrink shorter, distorted young leaves, dry leaf tips die and, importantly, easy durian cracking or poor meat quality.

- Sulfur (S): Nitrogen deficiency-like symptoms (pale yellow leaves), but will occur with young leaves or young shoots first. The leaves are smaller and pale whole leaves.

3. Micronutrients

Most of them show symptoms in young shoots or young leaves because they are immovable elements in plants.

- Zinc (Zn): The most common symptoms in durian are "glass leaves" or "small leaves." The young leaves are smaller than usual, slender, pointed, green leaf lines but yellow leaf texture. The joints between the leaves are shorter.

- Boron (B): Dead young shoots, distorted young leaves, thick and crisp, deformed durian effect (distorted shape), rusty flesh, or seepage.

- Iron (Fe): The newly broken young leaves are pale white or extremely yellow, almost white, while the leaf lines remain faint green.

- Manganese (Mn): The young leaves are yellowish between the leaf lines, resembling a lack of magnesium, but are formed with young leaves, and the green leaf lines are conspicuous.

Further observations on the diagnosis of nutrient deficiency

- Birth position: If starting at an old leaf first, usually N, P, K, Mg. If starting at a young leaf first, usually a group of microelements, zinc, boron, or calcium.

- Soil conditions: The acidity-alkalinity (pH) of the soil has a great effect on nutrient absorption. If the soil is extremely acidic, durian usually lacks calcium and magnesium.

- Water content: Dehydration may cause plants to exhibit nutrient deficiency-like symptoms (especially potassium) because plants cannot suck up the elements.

# Agriculture # Plant nutrient deficiency symptoms # Plant nutrient deficiency characteristics # Plant durian # Agriculture