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      Peningkatan Pertumbuhan Semai Nyamplung pada Lahan Pascatambang Kapur dengan Pemberian Asam Humat dan Kompos Rumput Gajah.

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      Date
      2026
      Author
      MAISUN, YASMIN GHINA
      Mansur, Irdika
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      Abstract
      Lahan kritis akibat eksploitasi sumber daya alam, seperti penambangan batu kapur menyebabkan penurunan kesuburan tanah dan hilangnya vegetasi. Salah satu cara pemulihan lahan yang efektif adalah penggunaan bahan organik seperti kompos. Penelitian ini menguji pengaruh kompos rumput gajah (Pennisetum purpureum) dan asam humat terhadap pertumbuhan semai Calophyllum inophyllum L. (Nyamplung) pada tanah bekas tambang kapur. Penelitian menggunakan Rancangan Acak Lengkap (RAL) dua faktor yaitu asam humat (0; 2,5; 5; 7,5 g) dan kompos rumput gajah (0; 100; 200 g). Parameter yang diamati meliputi tinggi, diameter, jumlah helai daun, berat basah, berat kering, serta nilai nisbah pucuk akar selama 11 minggu. Hasil penelitian menunjukan dosis kompos rumput gajah 100 g menjadi dosis paling efektif dalam mendukung pertumbuhan tinggi dan jumlah helai daun. Sementara itu, kombinasi kompos 200 g dan asam humat 7,5 g mampu meningkatkan akumulasi berat basah dan berat kering tanaman. Hasil yang berbeda-beda antar parameter menunjukkan bahwa setiap fase pertumbuhan tanaman memiliki kebutuhan nutrisi yang berbeda.
       
      Land degraded by the exploitation of natural resources, such as limestone mining, leads to a decline in soil fertility and the loss of vegetation. One effective method of land restoration is the use of organic materials such as compost. This study examined the effects of elephant grass (Pennisetum purpureum) compost and humic acid on the growth of Calophyllum inophyllum L. (Nyamplung) seedlings in former limestone mining sites. The study used a two-factor completely randomized design (CRD) with humic acid (0; 2.5; 5; 7.5 g) and elephant grass compost (0; 100; 200 g). The parameters observed included height, diameter, number of leaves, fresh weight, dry weight, and shoot-to-root ratio over 11 weeks. The results showed that a 100 g dose of elephant grass compost was the most effective in promoting plant height and the number of leaves. Meanwhile, the combination of 200 g of compost and 7.5 g of humic acid increased both the fresh weight and dry weight of the plants. The varying results across different parameters indicate that each phase of plant growth has distinct nutritional requirements.
       
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      http://repository.ipb.ac.id/handle/123456789/174775
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      • UF - Silviculture [1503]

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      Copyright © 2020 Library of IPB University
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      Contact Us | Send Feedback
      Indonesia DSpace Group 
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      UIN Syarif Hidayatullah Institutional Repository
      Universitas Jember Digital Repository