Keragaman Berbagai Jenis Gulma pada Fase Vegetatif Beberapa Varietas Padi Beras Merah (Oryza nivara) yang Ditanam Diantara Tegakan Tanaman Karet (Hevea brasiliensis)

Abstract

Tujuan penelitian untuk mengetahui keragaman jenis gulma yang terdapat pada beberapa varietas padi gogo beras merah (Oryza nivara) yang ditanam diantara tegakan karet (Hevea brasiliensis). Penelitian dilakukan di Desa Sungei Putih, Kecamatan Galang, Kabupaten Deli Serdang, Provinsi Sumatera Utara. Penelitian menggunakan metode deskriptif dan kuantitatif melalui metode survey. Setelah didapatkan jumlah petak contoh yang diperlukan maka dilakukan analisa vegetasi. Setiap analisa vegetasi ditentukan : spesies gulma, kerapatan gulma, frekuensi gulma, dominansi gulma SDR, dan indeks keragaman jenis gulma. Hasil penelitian menunjukkan keragaman berbagai jenis gulma yang ditemukan pada budidaya tanaman padi beras merah yang ditanam diantara tegakan tanaman karet terdapat 10 spesies gulma dengan indeks keanekaragaman sedang. Jenis gulma padi beras merah yang mempunyai dominansi tinggi yaitu Digitaria sanguinalis dan Eleusine indica. The purpose of the study was to determine the diversity of weeds found in several upland rice varieties of brown rice (Oryza nivara) planted between rubber stands (Hevea brasiliensis). The research was conducted in Sungei Putih Village, Galang District, Deli Serdang Regency, North Sumatra Province. The research uses descriptive and quantitative methods through survey methods. After obtaining the required number of sample plots, a vegetation analysis was carried out. Each vegetation analysis determined: weed species, weed density, weed frequency, SDR weed dominance, and weed diversity index. The results showed the diversity of various types of weeds found in the cultivation of red rice rice planted between rubber plantations, there were 10 weed species with a moderate diversity index. Types of brown rice weeds that have high dominance are Digitaria sanguinalis and Eleusine indica.