PENGARUH SISTEM OLAH TANAH DAN COVER CROP TERHADAP SIFAT FISIK TANAH DAN PERTUMBUHAN TANAMAN KARET
DOI:
https://doi.org/10.22302/ppk.jpk.v35i2.357Keywords:
Gulma, Mucuna bracteata, sifat fisik tanah, tanaman karet, tanpa olah tanahAbstract
Sistem tanpa olah tanah dan cover crop telah banyak diterapkan di beberapa perkebunan karet di Indonesia, namun pengaruhnya terhadap pertumbuhan tanaman belum diketahui. Penelitian ini bertujuan untuk mengetahui perubahan sifat fisik tanah dan pertumbuhan tanaman karet TBM akibat pengolahan lahan dan penggunaan legume cover crop (LCC). Penelitian dilaksanakan pada bulan November 2011- Januari 2015 dengan menggunakan rancangan percobaan split plot dengan 2 faktor. Faktor utama adalah sistem olah tanah (tanpa olah tanah/TOT) dan olah tanah/OT), sedangkan anak petaknya yaitu jenis cover crop (tanpa cover crop/TCC), Mucuna bracteata/MB), dan gulma alami/GA). Pengamatan meliputi parameter pertumbuhan tanaman karet dan sifat fisik tanah. Hasil penelitian menunjukkan bahwa LCC (MB dan GA) mengubah agregat tanah, bobot isi, dan porositas total tanah. Pada umur 26 BST pertumbuhan tanaman karet pada perlakuan MB dan GA berbeda nyata dibandingkan kontrol.
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