This study describes the condition of rejuvenated oil palm plants, the factors influencing their growth and the improvement efforts that can be undertaken to enhance oil palm productivity. The research was conducted on the institutional land of smallholders participating in the community oil palm rejuvenation program (PSR) that had entered the productive plant period (TM) in North Labuhanbatu Regency. The research location was determined by the agroclimatic typology reason, one of which was determined by the representative altitude. The research location was carried out in 3 locations with different altitudes, including Kuala Beringin Village, Kualuh Hulu District (100-115 masl), Pulo Jantan Village, NA IX-X District (32-38 masl) Terang Bulan Village, Aek Natas District (12-17 masl). The study results showed the growth performance of oil palm in the productive plant phase (TM) in North Labuhanbatu Regency. The selection of research locations was based on agroclimatic typology, particularly representative altitude. The study was carried out in three locations with varying altitudes: Kuala Beringin Village in Kualuh Hulu District (100-115 meters above sea level), Pulo Jantan Village in NA IX-X District (32-38 meters above sea level), and Terang Bulan Village in Aek Natas District (12-17 meters above sea level).

Penelitian ini menjelaskan kondisi tanaman kelapa sawit hasil peremajaan, faktor-faktor yang memengaruhi pertumbuhannya, serta upaya perbaikan yang dapat dilakukan untuk meningkatkan produktivitas kelapa sawit. Penelitian dilakukan pada lahan kelembagaan petani kecil yang mengikuti program Peremajaan Sawit Rakyat (PSR) dan telah memasuki fase tanaman menghasilkan (TM) di Kabupaten Labuhanbatu Utara. Pemilihan lokasi penelitian didasarkan pada tipologi agroklimat, salah satunya adalah ketinggian lokasi yang representatif. Penelitian dilakukan di tiga lokasi dengan ketinggian yang berbeda, yaitu Desa Kuala Beringin di Kecamatan Kualuh Hulu (100-115 meter di atas permukaan laut), Desa Pulo Jantan di Kecamatan NA IX-X (32-38 meter di atas permukaan laut), dan Desa Terang Bulan di Kecamatan Aek Natas (12-17 meter di atas permukaan laut). Hasil penelitian menunjukkan performa pertumbuhan kelapa sawit pada fase tanaman menghasilkan (TM) di Kabupaten Labuhanbatu Utara. Pemilihan lokasi penelitian ini didasarkan pada tipologi agroklimat, khususnya ketinggian yang representatif, untuk memberikan gambaran pertumbuhan kelapa sawit di berbagai kondisi lingkungan.