Cabai merupakan tanaman hortikultura yang banyak ditanam oleh petani di Kota Tarakan karena memiliki nilai ekonomi yang tinggi. Namun terdapat masalah dalam budidayanya yaitu adanya gulma yang tumbuh disekitarnya. Adanya gulma di lahan budidaya dapat menimbulkan kerugian dan menyebabkan kehilangan hasil panen. Gulma yang banyak ditemukan di Kota Tarakan yaitu gulma Eleusine indica. Pengendalian yang dapat dilakukan salah satunnya yaitu dengan memanfaatkan gulma Cyperus compressus dan Eleusine indica sebagai bioherbisida. Tujuannya yaitu dapat menghambat pertumbuhan gulma Eleusine indica di lahan budidaya cabai. Penelitian menggunakan rancangan acak kelompok 1 faktor dengan 11 perlakuan dan diulang sebanyak 3 kali, Perlakuan P0 (kontrol negatif (tanaman cabai + gulma)), P1 (kontrol positif (tanaman cabai tanpa gulma)), P2 (25% ekstrak C. compressus), P3 (25% ekstrak E. indica), P4 (50% ekstrak C. compressus), P5 (50% ekstrak E. indica), P6 (75% ekstrak C. compressus), P7 (75% ekstrak E. indica), P8 (100% ekstrak C. compressus), P9 (100% ekstrak E. indica), P10 (herbisida basmilang 10 ml per liter). Parameter pengamatan yaitu tinggi gulma, jumlah daun gulma, berat basah dan kering pupus dan akar gulma, kerusakan gulma, tinggi tanaman cabai, jumlah daun cabai, berat basah dan kering pupus dan akar tanaman cabai. Data dianalisis menggunakan ANOVA, apabila terdapat data berbeda nyata maka dilanjut dengan uji lanjut DMRT. Hasil penelitian menunjukkan bahwa perlakuan P10 menunjukkan hasil terbaik pada semua parameter gulma. Sedangkan perlakuan ekstrak gulma kurang berpengaruh dalam mengendalikan gulma. Namun perlakuan P9 menunjukkan hasil lebih baik dari semua perlakuan dan paling berpotensi untuk direkomendasikan sebagai bioherbisida.
Kata Kunci : Cabai, Gulma, Bioherbisida, Cyperus compressus, Eleusine indica

Chili is a horticultural crop widely grown by farmers in Tarakan City because it has high economic value. However, there is a problem in its cultivation, such as the existence of weeds growing around it. The presence of weeds in cultivated land can cause losses and loss of crops. Weeds that are commonly found in Tarakan City are weeds (Eleusine indica). One activity control that can be done is by utilizing weeds (Cyperus compressus) and (Eleusine indica) as bio-herbicides. The goal is to reduce the growth of Eleusine indica weeds on chili cultivation land. The study used a randomized block design with 1 factor with 11 treatments and repeated 3 times, Treatment PO (negative control (chili+ weeds)), P1 (positive control (chili plants without weeds)), P2 (25% C. compressus extract), P3 (25% E. indica extract), P4 (50% C. compressus extract), P5 (50% E. indica extract), P6 (75% C. compressus extract), P7 (75% E. indica extract), P8 (100% C. compressus extract), P9 (100% E. indica extract), P10 (basmilang herbicide 10 ml per liter). The parameters of observation were weed height, the number of weed leaves, fresh and dry weight of decay and weed roots, weed damage, the height of chili plants, the number of leaves of chili, fresh and dry weight of shoots, and roots of chili plants. Data were analyzed using ANOVA, if there were significantly different data then it would be followed up with the DMRT follow-up test. The results showed that the P10 treatment showed the best results on all weed parameters. Meanwhile, the weed extract treatment had less effect on controlling weeds. However, treatment P9 showed better results than all treatments and had the most potential to be recommended as a bio-herbicide. Keywords: Chili, Weeds, Bio-herbicide, Cyperus compressus, Eleusine indica