ANALISIS SISTEM PENGOLAHAN TANAH TERHADAP EMISI CO2 DARI TANAH PADA TANAMAN KARET UMUR 12 TAHUN
DOI:
https://doi.org/10.22302/ppk.jpk.v42i1.954Keywords:
emisi CO2, Perkebunan karet, tanpa olah tanah, pengolahan tanah, gas rumah kacaAbstract
Pengolahan tanah di perkebunan karet umumnya dilakukan secara mekanis karena selain cepat, sistem ini juga efektif dalam mengeluarkan perakaran dan kayu pada area penanaman karet. Namun karena biaya penyiapan lahan secara mekanis besar dan adanya larangan metode bakar pada persiapan lahan menyebabkan sebagian besar perkebunan karet rakyat maupun perkebunan karet besar berstatus Hutan Tanaman Industri (HTI) lebih memilih menggunakan penyiapan lahan dengan tanpa olah tanah. Hal ini mempunyai efek terhadap emisi CO2 sebagai penyumbang gas rumah kaca. Tujuan penelitian ini adalah untuk membandingkan pengaruh sistem tanpa olah tanah dan olah tanah terhadap emisi CO2 pada tanaman karet berumur 12 tahun serta menganalisis faktor-faktor yang mempengaruhinya. Penelitian dilaksanakan pada bulan Juni sampai Juli 2023 di Kebun Pusat Penelitian Karet di tanaman karet tahun tanam 2011. Metode yang digunakan adalah mengukur emisi CO2 pada perlakuan tanpa olah tanah dan olah tanah pada perkebunan karet umur 12 tahun dan menganalisis menggunakan uji-t. Variabel faktor yang mempengaruhi emisi CO2 pada penelitian ini antara lain : C-organik, bobot isi dan kadar air dan dianalisis menggunakan uji korelasi. Hasil penelitian menunjukkan bahwa emisi CO2 sesaat perlakuan tanpa pengolahan tanah lebih tinggi dan berbeda nyata dibandingkan olah tanah. Hasil uji analisis korelasi menunjukkan bahwa c-organik dan kadar air berkorelasi positif signifikan terhadap emisi CO2, sementara bobot isi nyata berkorelasi negatif signifikan terhadap emisi Co2.
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