The small fruit stage of durian is a critical period that affects both the quality and quantity of the yield. This stage is divided into two key phases:

• Quail Egg Stage – The young durian fruit is about the size of a quail egg. This phase begins after successful pollination when the fruit starts developing.
• Chicken Egg Stage – The fruit grows larger, reaching the size of a chicken egg. During this stage, the tree requires a high amount of nutrients to support fruit development, reduce fruit drop, and strengthen the fruit structure.

The Importance of Calcium and Magnesium in the Small Fruit Stage

During this period, Calcium (Ca) and Magnesium (Mg) play a vital role in strengthening the fruit structure, enhancing cell wall development, and improving fruit quality. Green Cal gypsum, a natural source of calcium sulfate, provides these essential nutrients in an easily absorbable form, ensuring the durian tree receives adequate nourishment.

Benefits of Green Cal Gypsum During the Small Fruit Stage

✅ Reduces premature fruit drop, ensuring more fruits reach maturity.
✅ Strengthens fruit structure, preventing cracking and improving shell thickness.
✅ Enhances fruit quality, making the flesh denser, tastier, and longer-lasting.
✅ Improves soil condition, enhancing the absorption of other essential nutrients.

How to Use Green Cal Gypsum in the Small Fruit Stage

🔹 Soil application: Apply 1-2 kg per tree around the canopy area and water thoroughly to aid nutrient absorption.
🔹 Foliar spray: Mix 500g per 200 liters of water and spray on leaves and young fruits to boost nutrient uptake.
🔹 Combine with organic or chemical fertilizers: This improves overall nutrient efficiency and promotes healthy tree growth.

Conclusion

Applying Green Cal gypsum during the Quail Egg & Chicken Egg Stages significantly enhances fruit quality, reduces fruit loss, and results in firmer, more flavorful durians with a longer shelf life. This leads to better yields and higher market value, making durian farming more profitable.