The presence of weed vegetation is one of the main limiting factors in increasing the productivity of paddy fields in the semi-arid region of Kupang Regency. This study aims to identify the species composition and analyse the community structure of weeds in the paddy field agro-ecosystem in Mata Air Village using the Summed Dominance Ratio (SDR) parameter. The study was conducted using a quadrat method with 24 sample plots (0.25 m²) laid out randomly. Data were analysed quantitatively to determine Relative Density (RD), Relative Frequency (RF), and SDR. The results identified three main groups of weeds with varying levels of dominance. Sedges were the most dominant group with the highest SDR value (38.74%), driven by a very high individual density in the field (RD 47.85%). Grasses ranked second (SDR 31.64%), followed by broadleaves with an SDR value of 29.62%. Although they had the lowest dominance, broad-leaved weeds exhibited the most even spatial distribution across the study area (FR 38.89%). The combined dominance of sedges and grasses, which exceeded 70%, indicates that competition for nutrients and space at the study site is heavily influenced by monocotyledonous vegetation. These findings suggest the need for the integration of intensive soil management and appropriate water management as part of an Integrated Weed Management (IWM) strategy in Mata Air Village.

Keywords: weeds, vegetation analysis, mata air village, paddy fields, SDR

Arifin, Z., Munandar, A., & Setyawati, T. (2022). Dinamika Penyerapan Nitrogen oleh Gulma Teki (Cyperus rotundus) pada Fase Vegetatif Padi Sawah. Jurnal Agronomi Indonesia, 50(2), 145-152.

Basri, H., Syam, A., & Aminah, S. (2022). Pengaruh Jarak Tanam dan Sistem Tanam terhadap Dominansi Gulma Rumput pada Padi Sawah. Jurnal Agrotek Tropika, 10(1), 88-95.

Fitri, R., Hermawan, W., & Saputro, D. (2023). Analisis Pergeseran Dominansi Gulma akibat Penggunaan Herbisida Berulang di Wilayah Semi-Arid. Jurnal Perlindungan Tanaman Indonesia, 27(1), 34-42.

Gaol, M. L., Tellu, J. H., & Sudarmadji. (2024). Struktur dan Komposisi Gulma Tanaman Padi di Areal Persawahan Desa Noelbaki, Kabupaten Kupang. Jurnal Biotropikal Sains, 21(1), 45-56.

Handoko, P., Yunita, R., & Zahra, S. (2021). Adaptasi Fisiologis dan Efisiensi Fotosintesis Gulma Golongan C4 pada Lingkungan Tropis Kering. Jurnal Ekologi Pertanian, 12(3), 210-218.

Hasanah, U., Zainuddin, M., & Fajri, N. (2021). Pengaruh Kepadatan Populasi Gulma terhadap Penurunan Jumlah Anakan Produktif dan Hasil Padi Sawah. Jurnal Produksi Tanaman, 9(4), 256-263.

Hidayat, A., Syakir, M., & Baharuddin. (2023). Kompetisi Interspesifik Gulma dan Tanaman Padi dalam Perebutan Unsur Hara Nitrogen di Lahan Basah. Jurnal Agrosains, 25(2), 112-119.

Korneles, T. S., Tanu, K., & Sastrawan, I. G. (2025). Analysis of Weed Diversity, Density and Dominance on Rice Plants in Tropical Ecosystems. Advances in Tropical Biodiversity. Jakarta: Akademik Press.

Lewu, L. D., Kleden, P., & Roga, G. (2024). Analisis Vegetasi dan Indeks Keragaman Gulma pada Lahan Padi Sawah di Sumba Timur. ResearchGate Publication/Jurnal Pertanian Tropis, 11(2), 112-120.

Mulyadi, A., Santoso, E., & Wijaya, K. (2024). Strategi Manajemen Gulma Terpadu untuk Peningkatan Produksi Padi di Wilayah Semi-Arid Kabupaten Kupang. Jurnal Pengabdian Pertanian, 8(1), 15-24.

Nugroho, B., Pratama, Y., & Kusuma, W. (2023). Penggunaan Parameter Summed Dominance Ratio (SDR) dalam Analisis Sosiologi Tumbuhan pada Ekosistem Pertanian. Jurnal Silva Tropika, 7(2), 98-105.

Pani, A. S., Santosa, D., & Mulyadi, A. (2025). Analisis Vegetasi Gulma Pasca-Panen Tanaman Padi di Kabupaten Gayo Lues. Jurnal Media Pertanian, 10(1), 22-34.

Pradana, W., & Saputra, E. (2022). Dampak Perubahan Iklim Global terhadap Invasifitas dan Agresivitas Gulma di Lahan Basah Tropis. Jurnal Sumberdaya Lahan, 16(2), 77-85.

Putra, F., Ramadhan, T., & Sari, D. (2023). Peran Saluran Irigasi dalam Distribusi Benih Gulma Daun Lebar di Lahan Persawahan. Jurnal Teknik Pertanian Lampung, 12(3), 612-620.

Rahmadi, A. (2022). Ekologi Gulma dan Teknik Analisis Vegetasi dalam Pengendalian Terpadu. Yogyakarta: Graha Ilmu.

Santosa, D., Mulyani, S., & Budi, A. (2021). Pengaruh Teknik Olah Tanah dan Manajemen Air terhadap Komposisi Gulma Sawah. Jurnal Tanah dan Iklim, 45(1), 22-30.

Siregar, M., Hutauruk, J., & Tambunan, P. (2021). Efektivitas Pengolahan Tanah Secara Mekanis dalam Menekan Bank Benih dan Umbi Gulma Perenial. Buletin Agrononmi, 9(2), 101-109.

Suryani, E., Hartanti, L., & Kurniawan, H. (2022). Kunci Identifikasi Gulma Lahan Basah Indonesia. Bogor: IPB Press.

Taufiq, M., Rohman, A., & Widjayanti, T. (2024). Implementasi Sistem Tanam Jajar Legowo dalam Manajemen Gulma Terpadu pada Padi Sawah. Jurnal Fitopatologi Indonesia, 20(2), 55-63.

Wahyudi, T., & Irwan, S. (2021). Akurasi Metode Sampling Kuadrat dalam Analisis Vegetasi Herba pada Lahan Pertanian. Jurnal Biologi Tropis, 21(3), 882-890.

Zulkifli, M., Hamdan, A., & Wahyuni, S. (2021). Evaluasi Aplikasi Herbisida Pra-Tumbuh dalam Menekan Pertumbuhan Bank Biji Gulma pada Padi Sawah. Jurnal Agrosains, 23(1), 12-19.