Abstract
The aims of this research were to analyze the role of arbuscular mycorrhizal fungi (AMF) and humid acid toward balsa ( Ochroma bicolor Rowlee.) growth on soil contaminated by lead and to analyze Pb accumulation in balsa. This study used a split split plot design. The main plot was AMF with 5 levels; without AMF (A0), AMF from secondary forest (A1), AMF from rubber natural forest (A2), AMF from oil palm plantations (A3), and AMF from rubber plantations (A4). The subplot was humic acid with 2 levels; no humic acid (B0) and 100 mL humic acid (B1). The sub subplot was Pb with 3 levels; 0 ppm Pb (C0), 500 ppm Pb (C1), and 750 ppm Pb (C2). The role of AMF and humic acid was more effective on the soil with 0 ppm of Pb than at 500 ppm of Pb and 750 ppm of Pb. AMF from rubber natural forest was the most effective AMF to increase diameter, root dry weight and shoot dry weight. Humic acid was able to increase the growth of height of 22.87% and diameter of 24.86% better than no humic acid. Pb accumulation in the entire plant tissue was more than 1000 ppm. It inhibited the growth of balsa seedlings and causing dead in 17.52% plant.
Highlights
Logam timbal (Pb) merupakan salah satu logam berat yang berbahaya bagi kesehatan manusia dan organisme lainnya
The aims of this research were to analyze the role of arbuscular mycorrhizal fungi
growth on soil contaminated by lead
Summary
Logam timbal (Pb) merupakan salah satu logam berat yang berbahaya bagi kesehatan manusia dan organisme lainnya. Tanaman cepat tumbuh cocok digunakan sebagai fitoremediasi logam berat karena memiliki biomassa dan transpirasi tinggi, serta sistem perakaran yang luas (Bissonnette et al, 2010). Asam humat dan Fungi Mikoriza Arbuskula (FMA) ditambahkan pada media tanah yang tercemar logam berat Pb untuk menunjang pertumbuhan balsa. Manfaat asam humat menurut Karti dan Setiadi (2011) antara lain: melarutkan mineral yang tidak tersedia, meningkatkan penyerapan unsur hara, memperbaiki kesuburan tanah, serta memperbaiki pertumbuhan, kesehatan, dan kualitas dari tanaman. Menurut Arisusanti dan Purwani (2013), FMA dapat meningkatkan toleransi tanaman terhadap logam berat Pb, meningkatkan akumulasi Pb di akar, serta menghambat akumulasi Pb pada batang dan daun. Penelitian ini bertujuan untuk menganalisis peran FMA dan asam humat terhadap pertumbuhan semai balsa pada tanah terkontaminasi Pb, serta menganalisis akumulasi Pb pada semai balsa
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Schedule a callMore From: Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management)
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