Penentuan Bulk Density Ultisol Di Lahan Praktek Terbuka Universitas Labuhanbatu

Harahap, Fitra Syawal; Oesman, Roswita; Fadhillah, Wizni; Nasution, Ade Parlaungan

doi:10.35329/agrovital.v6i2.1913

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…Sinar Pandawa, Labuhanabatu Regency, namely bulk density, porosity, water content, soil texture are presented in Table 2 Research Results on Oil Palm Plants able to reduce the highest soil bulk density, namely reaching 1.32g/cm3,then followed and the lowest at the second location was 0.97g/cm3. This is in accordance with research conducted by [16],which states that bulk density at a location can reduce the density of mineral soil contents because it increases the surface area of the soil, thereby increasing the pore space in the soil.According to [17], at the location of the Oil Palm Plantation, the soil density decreases as a resultbiocharwhich hasits porous nature increases the pore space in the soil.When applied to soil, it causes a significant effect on reducing bulk density and increasing soil pore volume.From the results of the analysis it was found that oil palm plants in the fourth location had an impact on soil porosity. An increase in porosity is in line with a decrease in soil bulk density, so that the amount of soil mass in a volume of soil can determine the amount of pore space in the soil.…”

Section: Resultssupporting

confidence: 91%

Analysis of Several Soil Physical Properties in the Third Generation of Oil Palm Plants at PT. Sinar Pandawa Labuhanbatu

Wiryansyah,

Syawal Harahap,

Dorliana Sitanggang

et al. 2023

IJSE

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The physical properties of the soil that need to be considered are the problems of degradation and soil structure due to management functions. In addition, on cultivated land that is not eroded, organic material is lost quickly.This research was carried out through 2 stages of activities, namely field activities and analysis activities. Stages of field activities were carried out at the Kebun Sinar Pandawa Palm Oil Plantation PT. Sinar Pandawa, Labuhanabtu, North Sumatra Province with a height of 28 meters. The method used in this research is a free grid measurement method at a semi-detailed survey level (observation frequency of 1 sample per 500 meters). Carrying out soil sampling at up to 5 sampling points with a distance of 100 meters in the field using a random method, spread over a predetermined area based on the base map. Land Use Research Results withSoil texture at PT. Sinar Pandawa, Labuhanbatu Regency, Sandy Clay, The Bulk Density value shows low, soil porosity is still high, the soil color looks relatively dark, and the soil water content is still relatively normal.

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Section: Resultssupporting

confidence: 91%

Analysis of Several Soil Physical Properties in the Third Generation of Oil Palm Plants at PT. Sinar Pandawa Labuhanbatu

Wiryansyah,

Syawal Harahap,

Dorliana Sitanggang

et al. 2023

IJSE

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“…Beberapa peneliti lain menunjukkan bahwa bahan organik berperan dalam menurunkan nilai BD. Kandungan bahan organik yang rendah akan menghasilkan tanah yang memiliki BD tinggi karena tanah akan semakin padat apabila kekurangan bahan organik, demikian pula sebaliknya (Prasetyo et al 2014, Tarigan et al 2015, Harahap et al 2021.…”

Section: Kadar Air-tersediaunclassified

Perbaikan Retensi Air dengan Aplikasi Bahan Organik pada Pertanaman Sorgum

Nurmi,

Musa,

Ilahude

2024

J. Ilmu. Pertan. Indones.

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This study aimed to determine the role of water hyacinth (Eichhornia crassipes Mart.) organic matter on water retention at pF 2.54 and pF 4.2, available water content, and bulk density (BD). The research method used was a factorial randomized block design. The first factor was the sorghum variety, which consisted of 2 levels, namely, V1 (variety) and V2 (Kawali). The second factor was the dose of water hyacinth organic matter, which consisted of 5 levels, namely P0 (without the application of water hyacinth organic matter), P1 (10 tons.ha-1), P2 (20 tons.ha-1), P3 (30 tons.ha-1), and P4 (40 tons.ha-1). Water retention was measured at pF 2.54 and pF 4.2 using a pressure plate apparatus and pressure membrane apparatus, respectively, and BD was measured using the ring method. The results showed that the treatment of organic matter application and varieties had a significant effect on water retention at pF 2.54, available water content, and BD with the best treatment of 40 tons of organic matter application and Kawali variety, but not affecting water retention at pF 4.2. There was no interaction between water hyacinth organic matter and sorghum varieties to improve water retention and BD. The highest water retention at pF 2.54 was 32.24% (P4), and the highest available water content was 11.67% (P4) but not significantly different from P3 (11.55%); the lowest BD was 1.11 g.cm-3 (P4) but not significantly different from P3 (1.13 g.cm-3). A very strong positive linear and negative linear correlation exists between available water content and BD with plant height, panicle length, and sorghum yield. Keywords: bulk density, water hyacinth, water content, water retention, sorghum

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“…Tanah yang mengandung bahan organik yang tinggi akan memiliki nilai bulk density yang rendah dan sebaliknya tanah yang mengandung bahan organik rendah memiliki nilai bulk density yang tinggi. (Fitra, et al, 2021)…”

Section: Berat Isi (Bulk Density)unclassified

KARBON TERSIMPAN PADA TEGAKAN Acacia crassicarpa DI HUTAN TANAMAN INDUSTRI PT. KALIMANTAN SUBUR PERMAI KABUPATEN KUBU RAYA

Riya,

Astiani,

Dewantara

2023

JHL

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Industrial Plantation Forest (HTI) are included in the Reducing Emission form of Deforestation and forest Degradation (REDD) scheme written in the Minister of Forestry Regulation No. 30 of 2009. The method used is a survey method with systematic sampling at each plant age. Measurement of tree biomass in measuring plots uses the Allometric Equation AGB = 0,027 of Acacia crassicarpa with the variable measuring tree diameter. The results of the research obtained that the average value of biomass on the top surface of Acacia crassicarpa at 3 years age class was 40,65 tons/ha, 4 years age class was 52,73 tons/ha and 5 years age class was 64,40 tons/ha. Ha. The average value of biomass on the subsurface aged 3 years age class was 9,67 tons/ha, 4 years age class was 12,17 tons/ha and 5 years age class was 14,37 tons/ha. The average carbon obtained from the top surface of Acacia crassicarpa aged 3 years class was 19,11 tons C/Ha, aged 4 years age class was 24,78 tons C/Ha, and aged 5 years age class was 30,37 tons C/Ha. The average subsurface carbon (roots) at 3 years age class is 4,54 tons C/Ha, 4 years age class is 5,71 tons C/Ha, and 5 years age class is 6,75 tons C/Ha. The total carbon obtained is 91,26 tons C/Ha. The average value of bulk density of soil samples in the 3, 4, and 5-year age classes respectively is 0,32 gr/cm³ 0,34 gr/cm³, and 0,26 gr/cm³. Enviromental factors including C-organic nutrients, N, C/N are classified as high, and K nutrients are classified as moderate.Keywords: Acacia crassicarpa, Allometric Equation, Carbon Stock, Industrial Plantation Forest.AbstrakHutan Tanaman Industri (HTI) dapat termasuk ke dalam skema Reducing Emission form Deforestation and forest Degradation (REDD) yang tertulis dalam Peraturan Menteri Kehutanan No. 30 Tahun 2009. Metode yang digunakan adalah metode survey dengan pengambilan contoh secara systematic sampling disetiap umur tanaman. Pengukuran biomassa pohon di dalam plot ukur menggunakan Persamaan Alometrik AGB = 0,027 dari Acacia crassicarpa dengan variable pengukuran diameter pohon. Hasil dari penelitian menunjukkan nilai rata-rata biomassa pada bagian atas permukaan Acacia crassicarpa pada kelas umur 3 tahun sebesar 40,65 ton/ha, kelas umur 4 tahun sebesar 52,73 ton/ha dan kelas umur 5 tahun sebesar 64,40 ton/ha. Nilai rata-rata biomassa pada bagian bawah permukaan (akar) kelas umur 3 tahun sebesar 9,67 ton/ha, kelas umur 4 tahun 12,17 ton/ha dan kelas umur 5 tahun 14,37 ton/ha. Rata-rata karbon yang terdapat pada bagian atas permukaan kelas umur 3 tahun Acacia crassicarpa 19,11 ton C/Ha, kelas umur 4 tahun 24,78 ton C/Ha, dan kelas umur 5 tahun 30,37 ton C/Ha. Rata-rata karbon bagian bawah permukaan (akar) kelas umur 3 tahun 4,54 ton C/Ha, kelas umur 4 tahun 5,71 ton C/Ha, dan kelas umur 5 tahun 6,75 ton C/Ha. Total keseluruhan karbon yang diperoleh yaitu sebesar 91,26 ton C/Ha. Nilai rata-rata bulk density pada umur 3, 4, dan 5 tahun berturut-turut sebesar 0,32 gr/cm³, sebesar 0,34 gr/cm³, dan 0,26 gr/cm³. Kematangan gambut pada areal penelitian ini tergolong pada tingkat kematangan gambut hemik. Faktor lingkungan termasuk juga unsur hara C-organik, N, P, C/N tergolong tinggi dan unsur hara K tergolong sedang. Kata kunci : Acacia crassicarpa, Persamaan Allometrik, Stok Karbon, Hutan Tanaman Industri.

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Penentuan Bulk Density Ultisol Di Lahan Praktek Terbuka Universitas Labuhanbatu

Cited by 5 publications

References 6 publications

Analysis of Several Soil Physical Properties in the Third Generation of Oil Palm Plants at PT. Sinar Pandawa Labuhanbatu

Analysis of Several Soil Physical Properties in the Third Generation of Oil Palm Plants at PT. Sinar Pandawa Labuhanbatu

Perbaikan Retensi Air dengan Aplikasi Bahan Organik pada Pertanaman Sorgum

KARBON TERSIMPAN PADA TEGAKAN Acacia crassicarpa DI HUTAN TANAMAN INDUSTRI PT. KALIMANTAN SUBUR PERMAI KABUPATEN KUBU RAYA

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