Coconut is an important plantation crop in India and is widely grown in coastal and tropical regions. It provides income to many farmers through copra, tender coconut, oil, and other by-products. To get good growth and high yield, coconut plants require proper nutrition. Many farmers notice slow growth, yellowing of leaves, and low nut production due to lack of balanced fertilizer application. Understanding the correct fertilizer dose and applying it at the right time is essential for healthy coconut palms.
1. Importance of Balanced Nutrition
Coconut is a long-duration perennial crop that remains in the field for many years. Each palm absorbs nutrients continuously for growth, flowering, and nut development. If the soil has poor nutrients or fertilizers are not applied on time, the plant may show symptoms like small nuts, fewer bunches, and weak fronds. Balanced supply of Nitrogen (N), Phosphorus (P), and Potassium (K) along with micronutrients ensures vigorous growth and higher yield.
2. Recommended Fertilizer Dose per Palm per Year
For one grown-up coconut palm (above 4 years), the commonly recommended fertilizer dose is:
Nitrogen (N): 500 grams
Phosphorus (P₂O₅): 300 grams
Potassium (K₂O): 500 grams
Along with this, adding 15–20 kg of well-decomposed farmyard manure (FYM) or compost per palm yearly improves soil structure, moisture retention, and root activity.
If the soil is sandy or nutrient-poor, farmers may increase the potassium slightly because potassium plays a major role in nut formation and disease resistance.
3. Fertilizer Application Method
Dig a circular basin around the palm at a distance of about 1.5 to 2 meters from the trunk.
The depth should be around 20 to 30 cm.
Apply FYM first and then spread chemical fertilizer evenly in the basin.
Cover with soil and water lightly.
This method ensures that nutrients reach the root zone where they are effectively absorbed.
4. Fertilizer Schedule
The yearly fertilizer dose can be applied in two split doses:
First dose: Start of monsoon (June-July)
Second dose: End of monsoon or early winter (September-October)
Splitting the dose reduces nutrient loss and helps plants utilize nutrients better.
5. Importance of Micronutrients
Coconut plants sometimes show micronutrient deficiency such as yellowing of leaves. This is common in coastal or sandy soils.
Magnesium sulfate (500 grams) per palm once a year helps maintain leaf color.
Boron (B) deficiency causes small nuts and poor fruit set. You may apply 20–25 grams of Borax per palm once a year.
6. Irrigation and Mulching
After fertilizer application, irrigating the palm ensures good nutrient absorption. Mulching with coconut leaves, straw, or dry grass helps maintain moisture and enrich soil organic matter over time.
Conclusion
To maintain healthy coconut palms and improve nut yield, farmers should follow the recommended fertilizer dose, apply compost regularly, and include micronutrients when needed. Proper fertilization, combined with timely irrigation and field care, results in strong palms, more bunches, and increased income for farmers.
