Perkembangan Cacing Pontoscolex corethrurus Pada Media Kultur Dengan Berbagai Jenis Tekstur Tanah dan Bahan Organik
Growth of Pontoscolex corethrurus on Culture Media With Various Soil Texture and Organic Matter
DOI:
https://doi.org/10.32734/ja.v5i2.2552Keywords:
aplikasi cacing tanah, bahan organik, media kultur, Pontoscolex corethrurus, tekstur tanahAbstract
Aplikasi Pontoscolex corethrurus pada lahan memberikan dampak positif terhadap sifat tanah. Selama ini P.corethrurus yang digunakan dikoleksi langsung dari lahan yang mana cukup memakan waktu dan biaya. Penelitian ini bertujuan untuk mengetahui jenis tekstur tanah dan bahan organik terbaik pada media kultur buatan dalam mendukung perkembangan P.corethrurus. Penelitian ini dilaksanakan di laboratorium ekologi dan biologi tanah Fakultas Pertanian Universitas Sumatera Utara. Penelitian ini dilakukan selama dua tahapan dengan menggunakan Rancangan Acak Kelompok Faktorial. Faktor pertama jenis tekstur tanah yaitu lempung berpasir (60% pasir ; 24% debu; 16% liat), liat (28 % pasir; 20% debu; 52% liat), serta lempung berliat (36% pasir, 28% debu, 36% liat) dan faktor kedua jenis bahan organik terdiri dari tanpa bahan organik, kotoran sapi, kotoran kambing, dan serasah daun karet. Hasil penelitian menunjukkan bahwa jenis tekstur tanah terbaik dalam meningkatkan biomassa dan jumlah kokun P.corethrurus secara berturut-turut adalah lempung berpasir, lempung berliat, dan liat. Jenis bahan organik terbaik dalam meningkatkan biomassa dan jumlah kokun P.corethrurus pada penelitian tahap 1 secara berturut-turut adalah kotoran kambing, kotoran sapi, serasah daun karet, dan tanpa bahan organik. Kotoran kambing yang diaplikasikan pada tanah bertekstur lempung berpasir dan kotoran kambing yang diaplikasikan pada tanah bertekstur liat memiliki potensi yang sama dalam meningkatkan biomassa P.corethrurus hanya pada satu tahapan penelitian.
Application of Pontoscolex corethrurus gives the positive effect to soil properties. Recently, P.corethrurus is directly collected from field which are time consuming and costly. This research aimed to determine the best organic matter and soil texture types as the artificial culture medium in supporting the P.corethrurus growth. This research was conducted in Ecological and Biological Laboratory, Agriculture Faculty, University of Sumatera Utara. This research was conducted in two phases, with using factorial randomized block design. The first factor was types of soil texture i.e. sandy loam (60% sand; 24% silt; 16% clay), Clay (28% sand; 20% silt; 52% clay), clay loam (36% sand; 28% silt; 36% clay). The second factor was types of organic matter i.e. without organic matter, cow manure, sheep manure, and hevea leaf litter. The result showed that in both phases of experiment the best soil texture types in increasing earthworm biomass and cocoon number of P.corethrurus was sandy loam, following with treatment on texture clay loam, and clay respectively. The best organic matter treatments in increasing earthworm biomass and cocoon number of P.corethrurus in phase 1 was sheep manure, cow manure, Hevea leaf litter, and without organic matter respectively. Application of sheep manure on sandy loam soil and application of sheep manure on clay soil had the same potency in increasing P.corethrurus biomass only in first phase experiment.
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