Vegetasi Gulma pada Tanaman Ubi Kayu (Manihot esculenta) Di Kabupaten Oku Timur Sumatera Selatan

Syamsul Rizal (Department of Biology, Faculty of Mathematics and Natural Science, Universitas PGRI Palembang)
Siti Nuryatin
Trimin Kartika (Department of Biology, Faculty of Mathematics and Natural Science, Universitas PGRI Palembang)
Marmaini Marmaini (Department of Biology, Faculty of Mathematics and Natural Science, Universitas PGRI Palembang)

Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Vol. 19 No. 1 (2022): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam

Research on Weed Vegetation in  Cassava (Manihot esculenta) was carried out from March to April 2019 at a cassava plantation in East OKU Regency, South Sumatra. This study aims to determine the composition and structure of weeds in cassava plantations. This study used a quadratic method with 7 plots of 2 x 2 m in size. The parameters observed were density (K), relative density (KR), frequency (F), relative frequency (FR), Importance Value Index (INP) and Community Diversity Index (H '). The results showed 11 types of weeds, namely Ageratum conyzoides, Erechtites valerianifolia, Chromolaena odorata, Asystasia gangetica, Mimosa pudica, Boreria alata, Calapogonium caereuleum, Cleome rutidosperma, Physalis angulata, Cyperus rotundus, and Axonopus compressus. The dominant species was Ageratum conyzoides INP 47.43%. Species diversity is moderate with H 'value.