Gulma merupakan tumbuhan pengganggu yang memliki kandungan racun sehingga dapat menurunkan produktivitas tanaman. Untuk menegetahui spesies dari suatu gulma maka perlu dilakukan indentifikasi. Identifikasi gulma bertujuan untuk mengetahui spesies gulma, jumlah gulma, dan jenis gulma yang dominan. Penelitian ini dilaksanakan pada bulan Oktober hingga November 2020, yang bertempat di lahan budidaya tanaman holtikultura di Kecamatan Tarakan Utara. Motode yang digunakan pada penelitian ini yaitu metode acak dengan petak kuadrat berukuran 1 x 1 m sebanyak 50 sampel. Hasil penelitian yang dilakukan terdapat 29 jenis gulma yang ada di lahan budidaya tanaman hortikultura di Kecamatan Tarakan Utara, 20 jenis termasuk golongan berdaun lebar, 7 jenis termasuk golongan rerumputan, dan 2 jenis termasuk golongan teki-tekian. Adapun gulma yang dominan tumbuh pada lahan budidaya tanaman hortikultura di Kecamatan Tarakan Utara yaitu gulma Eleusin indica dengan nilai SDR 18,92%.
Kata Kunci: Gulma, Hortikultura, Kecamatan Tarakan Utara

Weeds are nuisance plants that contain toxins that can reduce plant productivity. to determine the species of a weed, it is necessary to identify it. Weed identification aimed to determine the weed species, the number of weeds, and the dominant weed types. This research was conducted from October to November 2020, which was located in a horticultural crop cultivation area in North Tarakan District. This study used a random method with a square plot measuring I x 1 m as many as 50 samples. The results of the study showed that there were 29 types of weeds in the cultivation of horticultural crops in North Tarakan District. 20 species consisted of broad- leaved groups, 7 species consisted of grasses, and 2 types consisted of Teka-teki The dominant weeds that grew on horticultural cultivated land in the North Tarakan District were Eleusin indica weeds with an SDR value of I 8.92%. Keywords: Weeds. Horticulture, North Tarakan District