Hubungan Konduktivitas Listrik Tanah dengan Unsur Hara NPK dan pH Pada Lahan Pertanian Gambut
DOI:
https://doi.org/10.26418/pf.v7i2.33358Abstract
Permasalahan yang sering terjadi dalam bidang pertanian adalah mendapatkan hasil panen secara tidak merata dalam satu lahan pertanian. Identifikasi awal mengenai kondisi fisik dan unsur hara pada lahan pertanian diharapkan dapat menjadi salah satu solusi pengolahan lahan yang tepat. Penelitian ini bertujuan untuk memetakan sebaran nilai konduktivitas listrik tanah, pH, dan NPK serta melihat korelasi antara parameter tersebut. Parameter yang akan diuji dari lahan pertanian gambut adalah nilai konduktivitas listrik tanah serta nilai kandungan hara NPK dan pH. Pengukuran konduktivitas listrik tanah dilakukan dengan menggunakan metode tahanan jenis. Nilai konduktivitas lisrik tanah sebelum dikeringkan adalah 0,0079-0,066 Sm-1, nilai konduktivitas listrik tanah setelah dikeringkan sebesar 0,029-0,056 Sm-1, pH memiliki rentang nilai 3,38-5,72, nilai unsur hara nitrogen 0,39-0,416%, nilai unsur hara fosfor sebesar 2,87-23,94 ppm, dan nilai unsur hara kalium sebesar 0,12-0,34 cmol/kg. Korelasi yang didapatkan antara konduktivitas listrik tanah terhadap pH, Nitrogen, Fosfor, dan Kalium adalah 0,5, -0,4, 0,28, dan 0,26. Terdapat korelasi nilai konduktivitas listrik tanah terhadap nilai NPK dan pH meskipun cenderung rendah. Nilai konduktivitas listrik tanah mengalami kenaikan nilai pada titik 12-13 diikuti juga dengan kenaikan nilai pH, fosfor, kalium, dan penurunan nitrogen.
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Date: 24-05-2023
Prisma Fisika
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