Arecanut, commonly known as supari or betel nut, is an important plantation crop grown in many parts of South and Northeast India. It is a long-duration crop that remains in the field for several years, so proper nutrition is essential for healthy growth, good nut quality, and high yield. Because arecanut palms grow continuously and produce bunches year after year, they need a balanced supply of nutrients through soil, fertilisers, and organic matter. Understanding nutrient management helps farmers maintain a productive and disease-free plantation.
Why Nutrient Management is Important
Arecanut palms grow up to 10–20 metres tall and produce multiple bunches. Each stage—root development, stem growth, leaf formation, and fruiting—requires different nutrients. If the soil lacks essential nutrients, palms become weak, produce fewer nuts, and become more prone to diseases like yellow leaf disease and bud rot. Balanced nutrition ensures strong roots, sturdy stems, lush green leaves, and well-filled nuts.
Organic Matter and Soil Health
Before thinking about chemical fertilisers, farmers must improve soil health. Arecanut grows best in soils rich in organic matter. Applying 10–15 kg of well-decomposed farmyard manure (FYM) or compost per palm each year increases soil fertility, improves moisture retention, and supports beneficial microbes. Mulching with coconut leaves, arecanut leaves, or green waste keeps the soil cool and reduces nutrient loss.
Recommended Fertiliser Doses
A balanced fertiliser schedule helps provide all the necessary nutrients. A common recommendation per palm per year is:
Nitrogen (N): 100–120 g
Phosphorus (P₂O₅): 40–50 g
Potassium (K₂O): 120–150 g
These nutrients help in leaf formation, flowering, fruit setting, and overall vigour. Potassium is especially important for nut filling and disease resistance.
The best time to apply fertilisers is twice a year:
May–June (early monsoon)
September–October (post-monsoon)
Fertilisers should be applied in small basins formed around each palm, about 0.5–1 metre away from the trunk, where feeder roots are active. After application, the fertiliser should be lightly covered with soil and followed by irrigation if there is no rain.
Micronutrients for Arecanut
Apart from NPK, arecanut also needs micronutrients such as magnesium, zinc, boron, and iron. Deficiencies in these nutrients cause symptoms like yellow leaves, poor nut size, and weak palms. To correct these issues, farmers can apply:
2–3 kg of dolomite or lime per palm in acidic soils
Foliar spray of micronutrient mixture (recommended for arecanut) 2–3 times a year
These sprays help palms recover quickly from deficiencies and improve overall productivity.
Irrigation and Nutrient Uptake
Arecanut responds well to regular irrigation. Proper moisture helps the roots absorb nutrients better. During summer, irrigation at 7–10-day intervals supports healthy growth. Avoid waterlogging, as it reduces root activity and leads to nutrient loss.
Intercropping Advantage
Growing crops like pepper, banana, or cocoa between arecanut rows helps improve soil fertility and provides additional income. These intercrops add organic matter and improve nutrient cycling in the plantation.
Conclusion
Nutrient management in arecanut requires a combination of organic manure, balanced fertilisers, micronutrients, and proper irrigation. With timely and correct nutrient supply, farmers can maintain strong, healthy palms and achieve high, quality nut production year after year.
