Abstract
This study aims to identify the fertility variable that is an obstacle in Bilah Hulu Subdistrict, Labuhanbatu Regency by evaluating the status of soil fertility and assessing alternative management in accordance with the status of soil fertility found in the Center of the People's Palm Oil Plantation, N Satu Aek Nabara Village, Bilah Hulu District, Labuhanbatu Regency with a height of ± 80 meters above sea level. This research is a phenomenological qualitative descriptive study with a land survey and is supported by a qualitative laboratory analysis. Soil sampling is carried out in the survey area sequentially based on where the estimated nature of the soil is different from the purposive random sampling method, so the results of the soil analysis obtained are expected to reflect the true value. 60 cm and recording the coordinates using global Positioning System. Whereas soil management information is obtained by direct field observation and in-depth interviews with farmers in a snow ball aiming to obtain complete information from farmers. Soil chemical properties analyzed in C-organic laboratory, CEC, Base Saturation. To determine the chemical properties of the soil with certain criteria that have been determined. Based on Technical Instructions for Evaluating Soil Fertility. Soil fertility parameters that become obstacles in the status of soil fertility in N Satu Aek Nabara Village, Bilah Hulu District, Labuhanbatu Regency are low soil organic matter content and very low soil fertility. The direction of management of soil fertility for sloping land units in the lower, palm, and peak areas of palm oil is in the form of adding organic matter with compost and fertilizer and inorganic substances in accordance with recommendations to improve soil fertility status.
Highlights
This study aims to identify the fertility variable that is an obstacle in Bilah Hulu Subdistrict, Labuhanbatu Regency by evaluating the status of soil fertility and assessing alternative management following the status of soil fertility found in the Center of the People's Palm Oil Plantation, N Satu Aek Nabara Village, Bilah Hulu District, Labuhanbatu Regency with a height of ± 80 meters above sea level
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan), 6(1), pp
Summary
p-ISSN 1412-1468 e-ISSN 2355-3545 kelapa sawit, tetapi pengembangan kelapa sawit di daerah mempunyai faktor kendala terutama kesuburan tanah karena lahan pertanian di daerah ini didominasi oleh jenis tanah Ultisol yang mempunyai tingkat kesuburan rendah diperkirakan 60% dari luas areal perkebunan kelapa sawit terdapat pada tanah ultisols (Adiwiganda et al, 1994). Menurunnya kesuburan tanah dapat menjadi faktor utama yang mempengaruhi produktivitas tanah, sehingga penambahan unsur hara dalam tanah melalui proses pemupukan sangat penting dilakukan agar diperoleh produksi pertanian yang menguntungkan kesuburan tanah adalah proses penilaian masalah-masalah keharaan dalam tanah dan pembuatan rekomendasi pemupukan (Harahap et al, 2020). Evaluasi status kesuburan untuk menilai dan memantau kesuburan tanah sangat penting dilakukan agar dapat mengetahui unsur hara yang menjadi kendala bagi tanaman. Menurunnya kesuburan tanah dapat menjadi faktor utama yang mempengaruhi produktivitas tanah, sehingga penambahan unsur hara dalam tanah melalui proses pemupukan sangat penting dilakukan agar diperoleh produksi pertanian yang menguntungkan. p-ISSN 1412-1468 e-ISSN 2355-3545 dengan melakukan evaluasi status kesuburan tanah dan mengkaji alternatif pengelolaan yang sesuai dengan status kesuburan tanah yang terdapat di sentra perkebunan kelapa sawit rakyat di Desa N Satu Aek Nabara, Kecamatan Bilah Hulu, Kabupaten Labuhanbatu
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