Karakteristik Kimia Oxisol Yang Diameliorasi Dengan Abu Vulkanik Marapi Dan Biochar Kulit Kopi

Moli Monikasari; Gusmini

doi:10.5281/zenodo.15315208

Authors

Moli Monikasari Andalas University Author
Gusmini Andalas University Author

DOI:

https://doi.org/10.5281/zenodo.15315208

Keywords:

Oxisol, karakteristik kimia, Abu Gunung Marapi, Biochar kulit kopi

Abstract

Tanah marginal memiliki potensi besar untuk dikembangkan meskipun menghadapi kendala seperti bahan organik yang rendah dan keasaman tinggi. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian abu gunung Marapi dan biochar kulit kopi terhadap karakteristik kimia tanah Oxisol. Penelitian ini menggunakan metode rancangan acak lengkap (RAL) dengan menginkubasikan Oxisol dengan amelioran menggunakan 3 ulangan selama 1 bulan. Perlakuan-perlakuan yang diberikan yaitu kontrol (Oxisol tanpa amelioran = K), Oxisol + abu gunung Marapi setara 5 ton/ha (A), dan Oxisol + biochar kulit kopi setara 5 ton/ha (B). Analisis kimia tanah untuk penelitian ini meliputi pengukuran pH tanah dengan perbedaan perbandingan tanah dengan pelarut (1:5 dan 1:10) dan lama pengocokan (30 menit dan 60 menit); P-tersedia metode Olsen dan Mehlik; KTK (ammonium asetat pH 7); % C-organik (Walkey and Black); % N-total (Khjedal); dan % C/N Hasil menunjukkan perubahan signifikan pada karakteristik kimia tanah, terutama peningkatan pH, KTK, dan P-tersedia.

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