CIRCULAR NURSERY MEDIA: BANANA STEM COMPOST AND WATERING REGIMES FOR OIL PALM

Boy Andro Fahmi Simanullang; Octanina Sari Br. Sijabat; Nina Unzila Angkat

doi:10.58432/3ja9g054

Authors

Boy Andro Fahmi Simanullang Tjut Nyak Dhien University Author
Octanina Sari Br. Sijabat Tjut Nyak Dhien University Author
Nina Unzila Angkat Tjut Nyak Dhien University Author

DOI:

https://doi.org/10.58432/3ja9g054

Keywords:

banana stem compost, circular agriculture, oil palm, pre-nursery, watering frequency

Abstract

Agricultural-waste valorization can improve nursery sustainability when organic residues are converted into functional growing-media amendments. This study evaluated banana stem organic matter and watering frequency, individually and interactively, on oil palm (Elaeis guineensis Jacq.) seedlings at the pre-nursery stage. A 3 x 3 factorial randomized block design with three replications was used in Medan Selayang, North Sumatra, beginning in July 2025. Banana stem organic matter was applied at 100, 200, and 300 g/polybag (B1-B3), while watering was imposed once daily, twice daily, or once every two days (P1-P3). Plant height, stem diameter, leaf area, and leaf number were measured from 5 to 12 weeks after planting (WAP). Banana stem organic matter significantly affected plant height at 5 and 12 WAP, with B3 producing the highest values (6.47 and 20.36 cm). Watering frequency did not significantly affect plant height, stem diameter, or leaf area, but significantly affected leaf number at 6 WAP, where P2 produced 1.93 leaves. No significant interaction was detected for the measured variables, although B3P2 produced the highest stem diameter (9.90 mm) and B3P3 the highest leaf area (27.44 cm2) at 12 WAP. These findings indicate that 300 g/polybag banana stem organic matter can support seedling height while moderate watering regimes may preserve growth, offering a circular approach to pre-nursery management.

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