scholarly journals California Bearing Ratio of Palm Oil Contaminated Subgrade under Soaked Condition

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
S.M Adeyinka
Keyword(s):  
Particle Size ◽  
Palm Oil ◽  
Oil Palm ◽  
Laboratory Experiments ◽  
Research Work ◽  
Dry Weight ◽  
Soil Samples ◽  
California Bearing Ratio ◽  
Engineering Work ◽  
Negative Effect

The effects of palm oil contaminant on the soaked California Bearing Ratio (CBR) of subgrade was investigated. The following objectives were set out in accordance with BS 1377: 1-8 (1990) and BS 1924 (1990); Particle Size Distribution, Atterberg Limits, Compaction and California Bearing Ratio for oil-palm contaminated and uncontaminated subgrade. Palm oil and four soil samples are used in this research work. The air-dried samples were contaminated with oil-palm at 0, 2,4, 6, 8 & 10% of the dry weight of the samples for 7 days thereafter air-dried for another 7 days. Laboratory experiments on the control (0%) and palm oil-contaminated subgrade samples were conducted after 24 hours of soaking the samples in accordance with BS 1924 (1990). It was found that the soaked CBR for the contaminated soil showed a lower values (17.45%, 24.80%, 49.50% and 21.50%) than the control CBR values (48.20%, 138.40%, 160.00 and 132.10%) for sample A, B, C and D respectively. It is therefore concluded that palm oil has a negative effect on the geotechnical properties and the mechanical strength of the soil hence it is not suitable in any Civil Engineering work.

Preparation of ethanol and palm oil/palm kernel oil alternative biofuels based on property improvement and particle size analysis

Fuel ◽  
2021 ◽  
Vol 305 ◽  
pp. 121569
Author(s):  
Chao Jin ◽  
Xin Liu ◽  
Tianyun Sun ◽  
Jeffrey Dankwa Ampah ◽  
Zhenlong Geng ◽  
...  
Keyword(s):  
Particle Size ◽  
Palm Oil ◽  
Oil Palm ◽  
Palm Kernel ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Palm Kernel Oil ◽  
Kernel Oil

scholarly journals Volume Change and Cracks Behavior of Lime Treated Expansive Soils

2018 ◽  
Vol 7 (4) ◽  
pp. 81
Author(s):  
Abdulrahman Aldaood ◽  
Amina Khalil ◽  
Ibrahim Alkiki ◽  
Madyan Alsaffar
Keyword(s):  
Expansive Soils ◽  
Research Work ◽  
Dry Weight ◽  
Soil Samples ◽  
Lime Treatment ◽  
Treated Soil ◽  
Swell Potential ◽  
Free Swell ◽  
Cracks Propagation ◽  
Lime Addition

This research work study the influence of cyclic wetting and drying on free swell potential of untreated and lime treated expansive clayey soils. Such a study is required to understand the behavior of these soils during wet-dry cycles. Two expansive soils (a polwhite bentonite and a kaolinite) with different plasticity indexes were used in this study. The soil samples were treated with different lime content in the order of (3, 5 and 7% by the dry weight of soil). The lime treated soil samples were cured at 20ºC for 28 and 180 days. The untreated and lime treated soil samples were subjected to four wet-dry cycles. Free swell potential and cracks propagation were studied during lime addition and wet-dry cycles. Results showed that, the free swell potential of untreated soil samples; in general; decreased with increasing wet-dry cycles, and all of the soil samples reached equilibrium after the second cycle. While the cracks propagation increased with these cycles, especially of bentonite soil samples. Larger cracks propagation has been observed in the bentonite soil samples. Lime addition enhanced the free swell potential values of  the two expansive soils and there was a drastic decrease in free swelling potential and cracks propagation of these soils. The beneficial effect of lime treatment to control the swelling values was partly lost by the first wet–dry cycles, and the free swell potential increased at the subsequent cycles.

scholarly journals The Analysis of the Effect of Determinant Factors of Palm Oil Plantation Sector on Agricultural Sector Growth in North Sumatera

2020 ◽  
Vol 3 (2) ◽  
pp. 1083-1094
Author(s):  
Ali Sandy Hasibuan ◽  
Fitrawaty Fitrawaty ◽  
M. Fitri Rahmadana
Keyword(s):  
Palm Oil ◽  
Oil Palm ◽  
Agricultural Sector ◽  
Secondary Data ◽  
Least Square Method ◽  
Least Square ◽  
Estimation Model ◽  
Ordinary Least Square ◽  
Negative Effect ◽  
North Sumatra

This study aims to analyze the influence of the area of oil palm plantations, oil palm production, and the number of the agricultural sector workforce on the agricultural sector PDRB in North Sumatra province. The data used are secondary data sourced from BPS North Sumatra province, namely PDRB variable in the agricultural sector, area of oil palm, palm oil production and the number of agricultural sector workforce in North Sumatra province in time series from 2008 to.d. 2017 in five districts namely, Asahan, Langkat, Labuhanbatu Utara, Labuhanbatu Selatan and Labuhan Batu districts. Data analysis was performed using the OLS (Ordinary Least Square) method with a panel data regression estimation model using the help of Eviews 10. The results of this study simultaneously showed that changes in the independent variables of land area, production and the total workforce of the agricultural sector together influenced Agricultural Sector PDRB variable significantly. While partially concluded that the variable area of land and oil palm production had a positive and significant effect on the PDRB of the agricultural sector in North Sumatra province, while the variable labor force in the agricultural sector had a negative effect on the PDRB of the agricultural sector in North Sumatra province.

scholarly journals Respons Pertumbuhan Bibit Kelapa Sawit (Elaeis guineensis Jacq) Terhadap Decanter Solid dan Pupuk Phospor di Pembibitan Utama

2021 ◽  
Vol 6 (1) ◽  
pp. 14
Author(s):  
Sarman Sarman ◽  
Elly Indraswari ◽  
Ahmad Husni
Keyword(s):  
Vegetable Oil ◽  
Seedling Growth ◽  
Palm Oil ◽  
Oil Palm ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Dry Weight ◽  
Crude Palm Oil ◽  
Elaeis Guineensis Jacq ◽  
G 13

Oil palm is one of the most important plantation crops in the plantation sector in Indonesia. Oil palm (Elaeis guineensis Jacq) is a vegetable oil-producing plant in the form of Crude Palm Oil (CPO). CPO productivity is very much determined by quality and productive seeds. Oil palm (Elaeis guineenses Jacq) is a vegetable oil-producing plant which produce Crude Palm Oil (CPO). This study aims to determine the response of oil palm seedling growth to the provision of solid food containers and phosphate fertilizers at various doses in the main nursery. This research was conducted at the Teaching and Research Farm, Faculty of Agriculture, Jambi University, Mendalo Indah, Jambi Luar Kota District, Muaro Jambi Regency. This research was conducted for 3 months from September to December 2019. Design of the experiment used a randomized block design (RBD) with one factor, the application of various solid decanter compositions consisting of 6 treatments levels : p0= fertilizer NPKMg 44g/polybag; p1=decanter solid 140 g + 13 g (TSP) / polybag; p2=decanter solid 240 g + 13 g (TSP) / polybag; p3 = decanter solid 340 g + 13 g (TSP)/polybag; p4 = decanter solid 440 g + 13 g (TSP)/polybag; and p5 = decanter solid 540 g + 13 g (TSP) / polybag. Variables observed were  plant height,  number of leaves, stem diameter, total leaf area, root dry weight, shoot dry weight, and root shoot ratio. The results showed that giving solid decanter at various doses was able to increase growth  in all observed variables and was able to sow seedling growth at recommended fertilization doses. The application of solid decanter 140 g + 13 g (TSP) is the best dose to increase the seed height variable and able to exceed the  seed height at the recommended dose of fertilizing oil palm seedlings in the main nursery.

scholarly journals Jurusan Budidaya Tanaman Perkebunan Politeknik Negeri Lampung

2017 ◽  
Vol 15 (2) ◽  
Author(s):  
Adryade Reshi Gusta ◽  
Any Kusumastuti ◽  
Yonathan Parapasan
Keyword(s):  
Organic Matter ◽  
Data Analysis ◽  
Physical Properties ◽  
Palm Oil ◽  
Oil Palm ◽  
Dry Weight ◽  
Growing Media ◽  
Significance Level ◽  
Top Soil ◽  
Good Medium

The efforts to achieve optimal results in the development of oil palm cultivation one of which is the use of the planting medium. Palm oil seedlings require planting medium that has the chemical and physical properties are good. Media palm nurseries generally consist of topsoil are mixed with sand and organic matter which is expected to obtain a good medium fertility premises. Top soil needs more difficult, so we need to look for alternative media to growing media prenursery palm oil. This study used randomized complete design and experiment arranged in seven media with four replications. The applications method of media: 100 % topsoil (A), topsoil and salvinia compost (1:1) (B), topsoil and coir palm oil (1:1) (C), topsoil and salvinia compost (1:2) (D) , topsoil and coir palm oil (1:2) (E), coir palm oil and salvinia compost (1:2) (F) , topsoil , salvinia compost, and coir palm oil (1:1:1) (G). All data were analyzed for variance. Data analysis followed by separation of means using LSD test with significance level of 5%. The resulted showed that both time and applications method of topsoil have affect on growth component. The best application method was topsoil, salvinia compost, and coir palm oil increased dry weight and root dry weight. Keywords: Prenursey, topsoil , salvinia compost, coir palm oil

scholarly journals Respon Akar Bibit Kelapa Sawit (Elaeis guineensis) Di Pre Nursery Pada Pemberian Naungan dan Abu Janjang Kelapa Sawit

2018 ◽  
Vol 6 (2) ◽  
pp. 35
Author(s):  
Yetti Elidar
Keyword(s):  
Palm Oil ◽  
Oil Palm ◽  
Elaeis Guineensis ◽  
Dry Weight ◽  
Real Difference ◽  
Plot Analysis ◽  
Main Plot ◽  
Wet Weight ◽  
Four Levels ◽  
Difference Test

The aim of this research is to know the effect of shade and dosage of palm oil ash as well as their interaction to the root of oil palm plantation in pre nursery. This research was carried out in Nursery Faculty of Agriculture, Mulawarman University, Samarinda from February to May 2011. This research is an experiment arranged in Completely Random Design (RAL) with split plot analysis (4 x 4) with 5 replications. The main plot is the level of shade reduction (N) at the age of 10 weeks which consists of four levels, namely: no = Shade minus 100%, n1 = Shade minus 75%, n2 = Shade minus 50%, n3 = Shade minus 25%. As a plot child is a dose of ash (D) consisting of four levels: d1 = 11.5 g of ash / polybag equivalent to 23 tons / ha, d2 = 23 g of ash / polybag equivalent to 45 tons / ha, d3 = 34.5 g of ash / polybag equivalent to 68 tons / ha, d4 = 45 g of ash / polybag equivalent of 91 tons / ha. Data were analyzed statistically and tested further with the smallest real difference test (BNT) at 5% level. The results showed that the treatment of ash dose 23 g ash / polybag or equal to 45 ton / ha (d2) gave wet weight, dry weight, wet weight of leaf, average dry weight of leaves 5,51 g, 2,32 g , and 5.08 g. The shading treatment gives a mean wet weight of roots 1.90 g.

scholarly journals Oil palm empty fruit bunch ash stabilized laterite as a fill material for low-volume pavement

2020 ◽  
Vol 39 (3) ◽  
pp. 721-731
Author(s):  
J.A. Oke ◽  
N.O. Obaji ◽  
K.J. Osinubi
Keyword(s):  
Oil Palm ◽  
Dry Weight ◽  
Strength Properties ◽  
California Bearing Ratio ◽  
Dry Density ◽  
Empty Fruit Bunch ◽  
Maximum Dry Density ◽  
Fill Material ◽  
Compactive Effort ◽  
Low Volume

A reddish-brown laterite was treated with up to 14 % oil palm empty fruit bunch ash (EFBA) by dry weight of soil and compacted with the British Standard light, BSL (or Standard Proctor) compactive effort. Index, compaction, strength and durability tests as well as microanalysis of the natural and stabilized specimens were carried out. The index, compaction characteristics (maximum dry density, MDD and optimum moisture content, OMC) and strength properties (California bearing ratio, CBR and unconfined compressive strength, UCS) were improved with higher EFBA treatment. Peak un-soaked and soaked CBR values of 70.0 and 45.0 %, as well as peak UCS strengths of 253.0, 462.0 and 577 kN/m2 at 7, 14 and 28 days curing were recorded at 8 % EFBA content. Based on the CBR specification specified in the Nigerian General Specifications, the laterite optimally treated with 8 % EFBA compacted with the BSL compactive effort can be used as a fill material in the construction of low-volume traffic pavement. The benefit of the EFBA application is primarily the reduction of the adverse environmental impact of the oil palm empty fruit bunch waste. Keywords: California bearing ratio, durability, laterite, oil palm empty fruit bunch ash, microanalysis, stabilization

scholarly journals Eksplorasi Fungi Mikoriza Arbuskula pada Tanah Histosol di Perkebunan Kelapa Sawit PT. Nafasindo Kabupaten Aceh Singkil dengan Kultur Trapping

2020 ◽  
Vol 2 (3) ◽  
pp. 59-66
Author(s):  
Alexander Parlindungan ◽  
Teti Arabia ◽  
Fikrinda Fikrinda
Keyword(s):  
Host Plant ◽  
Palm Oil ◽  
Oil Palm ◽  
Soil Samples ◽  
Oil Palm Plantation ◽  
The Media

Abstrak.  Eksplorasi fungi mikoriza arbuskula (FMA) dilakukan dengan kultur trapping menggunakan jagung sebagai tanaman inang dan beberapa media pembawa (pasir, biochar, zeolit). Sampel tanah yang digunakan berasal dari rizosfer berbagai umur kelapa sawit (1, 5, dan 10 tahun) dari PT. Nafasindo Aceh Singkil. Jumlah spora FMA terbanyak dijumpai pada rizosfer kelapa sawit umur  10 tahun (33,94) yang berbeda nyata dengan umur 1 tahun (14,94) dan tidak berbeda nyata dengan 5 tahun (21,88), sedangkan berbagai media tidak menunjukkan pengaruh nyata terhadap jumlah spora. Terdapat dua genus FMA  yang ditemukan di perkebunan kelapa sawit PT. Nafasindo Kabupaten Aceh Singkil, yaitu Glomus (enam spesies) dan Acaulospora (satu spesies), Glomus merupakan spesies yang dominan. Persentase kolonisasi FMA tidak nyata dipengaruhi oleh umur kelapa sawit dan dan media pembawa pada kultur trapping. Kolonisasi FMA kelapa sawit berumur 1 tahun, 5 tahun, dan 10 tahun tergolong rendah . Seperti halnya umur tanaman, kolonisasi FMA pada berbagai media pembawa tergolong rendah.Kata kunci : Glomus, Acaulospora, biochar, zeolit Abstract.  GlomusExploration of Arbuskular Mychoriza Fungi (AMF) by trapping culture used maize as host plant and some carrier mediums (sand, biochar, zeolite). The soil samples used were derived from the various age rhizosphere of oil palm (1, 5, and 10 years) from PT. Nafasindo Aceh Singkil. The results showed that highest number of FMA spores were found in the 10-year-old palm oil rhizosphere (33.94) which was significantly different from the age of 1 year (14.94) and was not significantly different from 5 years (21.88), while the media showed no significant effect on Number of spores. There were two genera of FMA found in oil palm plantation PT. Nafasindo of Aceh Singkil Regency, namely Glomus (six species) and Acaulospora (one species), Glomus is the dominant genus. The percentage of AMF colonization was not significantly affected by the age of oil palm and carrier media in trapping culture. AMF colonization of oil palm aged 1 year, 5 years, and 10 years was low. As like the age, FMA colonization of various carrier media was low., Keywords: Glomus, Acaulospora, biochar, zeolite

scholarly journals ISOLASI DAN UJI POTENSI BAKTERI FIKSASI N NON SIMBIOTIK ASAL TANAH KEBUN KELAPA SAWIT DENGAN APLIKASI TANDAN KOSONG DAN LIMBAH CAIR PABRIK KELAPA SAWIT

2019 ◽  
Vol 9 (2) ◽  
pp. 35
Author(s):  
Huryatul Islam ◽  
Nelvia Nelvia ◽  
Delita Zul
Keyword(s):  
Palm Oil ◽  
Oil Palm ◽  
Sampling Method ◽  
Soil Samples ◽  
Palm Oil Mill Effluent ◽  
N Fixation ◽  
Bacterial Cells ◽  
Empty Fruit Bunch ◽  
Nitrogen Fixing Bacteria ◽  
Palm Oil Mill

This study aimed was to isolate non-symbiotic N-fixation bacteria from oil palm plantations fertilized with empty fruit bunch (EFB) and palm oil mill effluent (POME) and to analyze their potency. The soil samples were taken by purposive sampling method from 4 different treatments are mixed application (EFB + POME), EFB application, POME application and without application (C), and each location was taken 3 times. Isolation of non-symbiotic N-fixation bacteria was perfomed by using NFb and Ashby's media. The parameters observed were bacterial cells number, number of isolates and their potency. The cells number of non-symbiotic N fixation bacteria at the application sites Mixed> POME application> EFB application> C. A total of 18 isolates were isolated and potentially as a nitrogen fixing bacteria characterized by the ability of isolates to change the color of the NFb medium from green to blue and form pellicle. The highest potential isolates are NFBC232, NFBK21, and NFBC33.

scholarly journals PENAMBAHAN KLORIDA DAN BAHAN ORGANIK PADA BEBERAPA JENIS TANAH UNTUK PERTUMBUHAN BIBIT KELAPA SAWIT

2020 ◽  
Vol 19 (2) ◽  
pp. 78
Author(s):  
A. KASNO ◽  
DEDI SOLEH EFFENDI
Keyword(s):  
Organic Matter ◽  
Oil Palm ◽  
Elaeis Guineensis ◽  
Peat Soil ◽  
Dry Weight ◽  
Soil Samples ◽  
Soil Types ◽  
Root Dry Weight ◽  
Main Plot ◽  
Plot Design

<p>ABSTRAK<br />Kelapa sawit (Elaeis guineensis) berkembang pesat di Indonesia<br />dan  penggunaan  pupuk  meningkat.  Pada  awalnya  pupuk  KCl<br />memperhitungkan hara K, namun diketahui hara Cl juga merupakan hara<br />mikro esensial. Penelitian bertujuan mempelajari penambahan Cl dan<br />bahan organik terhadap pertumbuhan dan kadar Cl dalam tanaman dan<br />akar kelapa sawit. Penelitian dilakukan di rumah kaca Balai Penelitian<br />Tanah, Bogor, tahun 2011. Contoh tanah diambil dari Cinangneng, Bogor<br />(Inceptisols), Cigudeg, Bogor (Oxisols), Kentrong, Lebak (Ultisols), dan<br />Sumatera Selatan (Gambut). Bibit kelapa sawit varietas Avros umur tiga<br />bulan ditanam dalam polibag dan dipanen setelah berumur 8 bulan.<br />Percobaan menggunakan rancangan petak terpisah, dengan petak utama<br />empat jenis tanah, dan empat anak petak, yaitu (1) Kontrol (-Cl), (2) KCl,<br />(3) NPK, dan (4) KCl + bahan organik. Setiap perlakuan diulang 4 kali.<br />Parameter yang diamati tinggi tanaman, diameter batang, bobot kering<br />tanaman dan akar, analisis Cl dalam tanah, daun, dan akar. Hasil penelitian<br />menunjukkan bahwa pemberian Cl menurunkan pertumbuhan bibit kelapa<br />sawit pada Oxisols, namun meningkatkan pada Inceptisols, Ultisols, dan<br />Gambut. Pemberian bahan jenis organik nyata meningkatkan pertumbuhan<br />kelapa sawit pada ke empat tanah. Pemberian hara Cl tidak meningkatkan<br />bobot kering tanaman kelapa sawit pada Inceptisols, Oxisols, dan Gambut,<br />namun meningkatkan bobot kering tanaman pada Ultisols. Pemberian hara<br />Cl meningkatkan bobot kering akar tanaman kelapa sawit pada ke empat<br />jenis tanah, namun meningkatkan kadar Cl dalam akar kelapa sawit,<br />sedangkan pemberian hara Cl tidak meningkatkan kadar Cl dalam daun,<br />kecuali pada Oxisols. Pemberian bahan organik menurunkan kadar Cl<br />dalam daun pada Ultisols dan tanah Gambut.<br />Kata kunci: bahan organik, Elaeis guineensis, jenis tanah, klorida,<br />pertumbuhan</p><p>ABSTRACT<br />Oil palm (Elaeis guineensis) was growing rapidly in Indonesia<br />and fertilizers use increased. Initially KCl were calculated as K nutrient,<br />but it is known that Cl is also an essential micronutrients. The research<br />aimed at studying the Cl and organic matter application on growth and Cl<br />content in plants and roots of oil palm. The study was conducted in the<br />greenhouse of Soil Research Institute, Bogor, in 2011. Soil samples were<br />taken from Cinangneng, Bogor (Inceptisols), Cigudeg, Bogor (Oxisols),<br />Kentrong, Lebak (Ultisols) and South Sumatra (Peat). AVROS varieties of<br />oil palm seedlings used 3 months being planted in polybags and harvested<br />after 8 months. The experiment design used was split plot design, with<br />four soil types as main plot, and four sub plots e.i. (1) Control (-Cl), (2)<br />KCl, (3) NPK, and (4) KCl + organic matter. Every treatment repeated<br />four times. Parameters observed are plant height, stem diameter, plant and<br />root dry weight and Cl analysis in soil, leaves, and roots. The result<br />showed that Cl application decreasing oil palm growth in Oxisols. Organic<br />matter application siqnificant increase of oil palm growth on the fourth<br />soil. The application of Cl nutrient did not increase the dry weight of plant<br />in Inceptisols, Oxisols, and Peat soil, but increased the dry weight of plants<br />on Ultisols. The application of Cl did not increase root dry weight in the<br />four soils, but increased Cl content in the roots in the four soil. While the<br />application of Cl did not increase of Cl content in leaves, except in<br />Oxisols. Organic matter application can reduce the content of Cl in the<br />leaves on the Ultisols and Peat soil.<br />Key words: organic matter, Elaeis guineensis, soil type, chloride, growth</p>

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