The standard arecanut fertilizer schedule — mature and young palm doses, basin placement — plus why Tamil Nadu's monsoon pattern means the timing most guides publish needs adjusting for Erode-belt farms.
Areca • Arecanut • Betel Nut • Pakku • Paaku • Adike • பாக்கு • ಅಡಿಕೆ
🌐 தமிழில் படிக்க / Read in Tamil →Last reviewed: 27 August 2026
Arecanut is a heavy feeder with a narrow, shallow root zone — most of it within 60–80cm of the stem — so where and when you apply fertilizer matters almost as much as how much. This guide covers the standard ICAR-CPCRI nutrient schedule for arecanut at every growth stage, then adjusts the timing for Tamil Nadu's own monsoon pattern, which differs from the West Coast conditions most published schedules are written for.
From the third year of bearing onward, per palm, per year — the ICAR-CPCRI reference figure used across South India:
This matches what's already used on the KITE Agro Fertilizer Calculator — use it to get exact carrier quantities (urea/DAP/SSP/MOP) and manure-mixing compatibility for your own palm count.
Immature palms don't get the full adult dose. CPCRI field trials (Vittal, Hirehalli, Peechi, Mohitnagar, Kahikuchi) recommend scaling the chemical fertilizer up over the first two years, while organic matter stays at the full rate from year one:
Under irrigated conditions, the same ramp applies — only the timing shifts (see below).
Most published schedules split the annual dose into a pre-monsoon application and a September–October application, timed around the Southwest Monsoon (June–September) carrying the first dose into the soil.
That assumption holds on the West Coast — Kerala and coastal Karnataka get the bulk of their rain from the Southwest Monsoon. Tamil Nadu doesn't. The Western Ghats sit between Erode and the Arabian Sea, so the Southwest Monsoon arrives weak and unreliable here — Tamil Nadu's real rainy season is the Northeast Monsoon, arriving mid-October through November.
The chart below shows the shape of that mismatch: a shallow bump where the generic schedule expects rain, and the real peak arriving four months later.
The second dose is already well-placed — applying in September–October means it's in the ground right as the Northeast Monsoon breaks. It's the first dose that needs rethinking:
Most arecanut fertilizer guidance — including the schedule above — is written assuming acidic soil that needs lime. That's the common case on the West Coast, but it isn't universal: parts of Tamil Nadu's interior, including black-soil pockets around Erode, run neutral to alkaline instead, where adding lime does nothing useful and the real gap is usually elsewhere — sulphur, zinc, boron.
A simple ring, not a pile against the stem. Dig the basin, apply, then cover with soil and organic matter.
The common ICAR-CPCRI reference for a fully bearing adult palm is 100g nitrogen, 40g P2O5 and 140g K2O per year (roughly 220g urea, 200g SSP and 235g MOP), alongside about 12kg FYM/compost and 12kg green leaf manure. Soil and leaf testing should still guide the final programme for your specific field.
CPCRI field trials recommend applying only ⅓ of the mature chemical fertilizer dose in the first year after planting and ⅔ in the second year, reaching the full dose from the third year onward. Organic manure (green leaf and compost) is applied at the full rate from year one — it doesn't ramp up the way the chemical dose does.
The standard schedule splits the dose into two applications — roughly a third in the pre-monsoon window and the rest with the organic matter in September–October. Most published schedules assume the Southwest Monsoon (June–September) carries the first dose in, which works on the West Coast but is unreliable in Tamil Nadu's rain-shadow interior. CPCRI's own guidance notes the first dose's timing can shift to April–May under irrigated conditions — which describes most Erode-belt farms better than waiting on Southwest Monsoon rain.
Not necessarily. Most arecanut guidance assumes acidic West Coast soil needing lime, but parts of Tamil Nadu's interior, including black-soil pockets around Erode, run neutral to alkaline instead — where lime does nothing useful. Pull your own free soil health card from the Tamil Nadu Agriculture Department before assuming the acidic-soil advice applies to your field.
Dig a circular basin 15–20cm deep and 0.5–1.0m in radius around the palm, leaving about 20cm bare around the stem itself. Apply the fertilizer in the basin, then cover with soil and organic matter — never pile fertilizer directly against the stem.
Applying the full annual dose in a single application instead of splitting it, and relying on the first (pre-monsoon) dose to be carried in by rain that, in much of Tamil Nadu, doesn't reliably arrive on that schedule. If the field isn't irrigated for that window, that first dose is largely wasted.
This guide covers the standard schedule and timing — pick a calculator to turn it into exact quantities for your own farm.
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