Abstract
The efficiency of fertilizing N on oil palm plants on peatlands in several companies is done by planting legume cover crop, one of which is Mucuna bracteata . This plant can form root nodules because it can symbiosis with rhizobium bacteria which will make fixation of N 2 in the air so that the bound N elements can be utilized by plants. This bacterium grows naturally on legume cover crop. This study aims to explore and characterize adaptive rhizobium bacteria in peatlands. The location of sampling is done at PT. Jatimjaya Perkasa, Kubu District, Rokan Hilir Regency. Sampling of root nodules by stratified random sampling. The results obtained by eight bacterial isolates that have relatively similar macroscopic and microscopic characteristics and belong to rhizobium based on the YEMA + CR and YEMA + BTB tests. Keywords: Peat soil, Oil palm, Legume cover crop, Rhizobium
Highlights
PENDAHULUAN Lahan gambut di Provinsi Riau sebagian besar dimanfaatkan untuk perkebunan kelapa sawit dimana luas perkebunan kelapa sawit pada tahun 2011 lebih dari 1,5 juta ha (Ditjen Perkebunan, 2011)
This study aims to explore and characterize adaptive rhizobium bacteria in peatlands
Biofertilisasi Bakteri Rhizobium pada Tanaman Kedelai (Glycine max (L) Merr)
Summary
Penentuan lokasi pengambilan sampel dengan stratified random sampling yaitu sampel diambil di lahan gambut yang ditumbuhi. M.bracteata umur satu tahun, umur dua tahun, serta umur tiga tahun. Pengambilan sampel dilakukan dengan proportional stratified sampling yaitu dengan menghitung setiap anggota antar sub populasi dan diambil sebanyak 10% dari total masingmasing sub populasi. Pada setiap titik pengambilan sampel akar tanaman legum juga dilakukan pengambilan sampel tanah (Pamungkas, 2014)
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