Jurnal Planta Simbiosa Volume 4 (1) April 2022 12 Pengaruh Pemberian Mikro Organisme Lokal (MOL) Bonggol Pisang terhadap Pertumbuhan Stum Mata Tidur Karet (Hevea brasiliensis Muell. Arg) Klon IRR 112 di Polybag The Effect of Giving Local Micro-Organisms (MOL) Banana Weevil on the Growth of Rubber Sleep Eye Stum (Hevea brasiliensis Muell. Arg) IRR 112 clone in Polybag Rusnaini Rusnaini 1* dan Syahid Ali Ackbar 1 1 Jurusan Agroteknologi, Fakultas Pertanian, Universitas Sjakhyakirti, Jln. Sultan Muhammad Mansyur Kb Gede, Palembang. Indonesia Diterima 04 April 2022 Disetujui 28 April 2022 ABSTRAK Usaha mempercepat pertumbuhan okulasi dapat dilakukan dengan pemberian zat pengatur tumbuh. MOL dapat diaplikasikan pada tanaman sebagai pupuk hayati, sebagai starter atau biang pengomposan bahan organik maupun sebagai bahan pestisida hayati terutama sebagai fungisida hayati. Penelitian ini bertujuan mengkaji pengaruh pemberian mikro organisme lokal (MOL) bonggol pisang terhadap pertumbuhan stum mata tidur karet (Hevea brasiliensis Muell. Arg.) klon IRR 112 di polybag. Penelitian dilaksanakan di Desa Sembawa, Sembawa, Banyuasin, Sumatera Selatan. Waktu pelaksanaan penelitian dimulai dari bulan Januari sampai dengan bulan April 2019. Rancangan penelitian yang digunakan adalah Rancangan Acak Kelompok (RAK), terdapat 6 perlakuan yaitu P0 = 0% (Kontrol); P1 = 10%; P2 = 20%; P3 = 30%; P4 = 40%; dan P5 = 50% dan 4. Setiap perlakuan terdiri dari 6 tanaman, maka jumlah tanaman yang diteliti sebanyak 96 tanaman (polybag). Setiap satuan (unit) perlakuan percobaan menggunakan 2 tanaman contoh. Data hasil penelitian dianalisis dengan analisis sidik ragam yang dilanjutkan dengan uji BNJ bila pengaruh perlakuan nyata atau sangat nyata. Peubah yang diamati yaitu : muncul tunas (hst), tinggi tunas (cm), diameter tunas (cm), jumlah daun (helai) dan berat kering akar (g). Berdasarkan hasil penelitian yang telah dilaksanakan diperoleh kesimpulan bahwa pemberian MOL bonggol pisang tidak berpengaruh nyata terhadap waktu tinggi tunas, diameter tunas, jumlah daun, tetapi berpengaruh nyata terhadap waktu muncul tunas dan berpengaruh sangat nyata terhadap berat kering akar. Perlakuan konsentrasi MOL bonggol pisang 30% cenderung memberikan hasil yang terbaik terhadap muncul tunas 3,66 hst, tinggi tunas 28,31 cm, diameter batang 0,375 cm, jumlah daun 12,50 helai dan berat kering akar 2,29 g. Kata kunci : Klon IRR 112, bonggol pisang dan MOL ABSTRACT Efforts to accelerate the growth of grafting can be done by giving growth regulators. MOL can be applied to plants as a biological fertilizer, as a starter for composting organic matter and as a biological pesticide, especially as a biological fungicide. The aim of this research is to examine the effect of local microorganism (MOL) of banana weevil on the growth of rubber sleep eye stums (Hevea brasiliensis Muell. Arg.) IRR 112 clone in polybags. The research was conducted in Sembawa Village, Sembawa, Banyuasin, South Sumatra. The time of the research was started from January to April 2019. The research design used was a Randomized Block Design (RAK), there were 6 treatments, namely P0 = 0% (Control); P1 = 10%; P2 = 20%; P3 = 30%; P4 = 40%; and P5 = 50% and 4. Each treatment consisted of 6 plants, so the number of plants studied was 96 plants (polybags). Each experimental treatment unit uses 2 sample plants. The research data were analyzed by analysis of variance followed by the BNJ test if the effect of treatment was real or very real. The observed variables were: shoot emergence (HST), shoot height (cm), shoot diameter (cm), number of leaves (strands) and root dry weight (g). Based on the results of research that has been carried out, it was concluded that the application of MOL banana weevil did not significantly affect the time of shoot height, shoot diameter, number of leaves, but had a significant effect on the time of shoot emergence and had a very significant effect on root dry weight. Treatment with 30% banana weevil MOL concentration tended to give the best results for shoots appearing 3.66 days after planting, shoot height 28.31 cm, stem diameter 0.375 cm, number of leaves 12.50 strands and root dry weight 2.29 g. Keywords: IRR 112 clone, banana weevil and MOL * Korespondensi : rusnaini990@gmail.com