Palms of 3 years and older need at least 150–200 litres of water a day, up to 300 litres in hot summers in older plantations; with drip, four drippers of 8 litres/hour for 5 hours give about 160 litres a day. Widen weed-free basins each year (1 m, 2 m, then 3 m radius) without piling soil at the collar. Five-year-old palms: 50 kg compost, FYM or green leaves. N:P:K:MgSO4 per palm per year — 400:200:400:125 g in year 1, 800:400:800:250 g in year 2, and 1200:600:1200:500 g from year 3, in two splits (July–August and December–January).
Pending expert review
Source
Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Oil Palm – Irrigation management; basin management; manuring, pp. 225–226
