PENGARUH APLIKASI ARANG TERHADAP PERTUMBUHAN AWAL Michelia Montana Blume DAN PERUBAHAN SIFAT KESUBURAN TANAH PADA TIPE TANAH LATOSOL

Harris Herman Siringoringo, Chairil Anwar Siregar

Sari


Penggunaan arang (biochar) sebagai salah satu bahan soil conditioner dalam bidang usaha hutan tanaman masih jarang digunakan, walaupun jumlah bahan baku berupa sisa-sisa tebangan hutan untuk diolah menjadi biochar sangat melimpah dan secara potensial tersedia untuk digunakan sebagai soil conditioner, oleh karena itu penelitian ini bertujuan untuk memperoleh informasi tentang efek positif arang halus dalam merangsang pertumbuhan jenis tanaman Michelia montana Blume umur enam bulan pada tipe tanah Latosol yang bertekstur liat di Kebun Percobaan Carita, Provinsi Banten. Aplikasi arang sebagai soil conditioner juga diharapkan dapat meningkatkan sejumlah parameter kesuburan tanah yang bergeser ke arah yang lebih baik. Kondisi iklim di Carita termasuk tipe B dengan rerata curah hujan tahunan sebesar 2.516 mm dengan temperatur minimum 22 derajat Celcius dan maksimum 33 derajat Celcius serta kelembaban udara antara 76-84%. Hasil penelitian menunjukkan bahwa aplikasi dosis arang halus 5% (v/v) cukup nyata menaikkan laju pertumbuhan awal tanaman M. montana Blume. Sementara efek positif aplikasi bahan arang terhadap sifat kesuburan kimia tanah tampak dalam hal naiknya pH, Ca2+, Mg2+, K+, KTK, KB, K2O, P2O5 dan turunnya kadar H+-dd dan Al3+ -dd. Aplikasi arang dapat memperbaiki kualitas kesuburan tanah yang signifikan pada tipe tanah Latosol yang bertekstur liat. 


Kata Kunci


Aplikasi arang; dosis; laju pertumbuhan; parameter kesuburan tanah; tanah Latosol

Teks Lengkap:

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Referensi


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DOI: https://doi.org/10.20886/jphka.2011.8.1.65-85

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