Evaluation of Phosphate Rock Sources and Rate of Application on Oil Palm Yield Grown on Peat Soils of Sarawak, Malaysia

2013 ◽  
Vol 13 (1) ◽  
pp. 12-22 ◽  
Author(s):  
Zaharah Abdul Rahman ◽  
E.W. Gikonyo ◽  
B. Silek ◽  
K.J. Goh ◽  
Amin Soltanghei
Keyword(s):  
Oil Palm ◽  
Phosphate Rock ◽  
Peat Soils

scholarly journals The Economics of Using Phosphate Rock under Matured Oil Palm in the Semi-deciduous Forest Zone in Ghana

2014 ◽  
Vol 7 (2) ◽  
pp. 210-213
Author(s):  
I. Danso ◽  
B.N. Nuertey ◽  
F. Danso ◽  
S. Anim Okyere ◽  
E. Andoh-Mensah ◽  
...  
Keyword(s):  
Oil Palm ◽  
Phosphate Rock ◽  
Deciduous Forest ◽  
Forest Zone

scholarly journals Screening of Fungi from Oil Palm Rhizosphere in Peat Soils and the Potential as Biological Agents against Ganoderma boninense

2019 ◽  
Vol 2 (2) ◽  
pp. 37-49
Author(s):  
Fifi Puspita ◽  
Isna Rahma Dini ◽  
Dermala Sari
Keyword(s):  
Oil Palm ◽  
Peat Soil ◽  
Morphological Characteristics ◽  
Severity Index ◽  
Biological Agents ◽  
Ganoderma Boninense ◽  
Peat Soils ◽  
Rhizosphere Fungi ◽  
Randomized Design ◽  
Trichoderma Isolate

 One of the diseases that attack oil palm plants is stem rot disease. Control efforts that can be done is to use rhizosphere fungi from oil palm plants in peat soils. This study aimed to select fungi from rhizosphere of oil palm plants in peat soil based on morphological characteristics and test their potential as biological agents against Ganoderma boninense. This research was conducted by exploration, observation and experiment by using complete randomized design (RAL). The parameters observed were macroscopic characteristics of fungi from oil palm rhizosphere, disease severity index, fungus inhibition power from oil palm rhizosphere to G. boninense, colony diameter and growth rate of high antagonist rhizosphere fungus, hyperparasitic type of fungus from rhizosphere of oil palm plant with G. boninense and the morphological characteristics of fungi from high antagonist rhizosphere in macroscopic and microscopic. The results showed that 12 rhizosphere fungi isolates and 4 isolates were antagonist to G. boninense. Isolate J5 has a high antagonist power of 70.26% and is a genus Trichoderma, isolate J7 belongs to the genus Trichoderma, isolate J10 genus Aspergillus and isolate J12 genus Mucor.

scholarly journals Spatial Distribution of Dryness on Oil Palm Plantations Using Landsat image

Agromet ◽  
2018 ◽  
Vol 32 (2) ◽  
pp. 51
Author(s):  
Melda Hazrina ◽  
Idung Risdiyanto
Keyword(s):  
Oil Palm ◽  
Moisture Stress ◽  
Stress Index ◽  
Drought Indices ◽  
Crop Water Stress Index ◽  
Peat Soils ◽  
Water Stress Index ◽  
Top Soil ◽  
Dryness Index ◽  
Moisture Dynamics

Peatland in Riau is commonly utilized for agricultural purposes including oil palm. This utilization has influenced on peat characteristics on the top soil leading to degraded peatland, associated drought-related fire. In this paper, we identified peat dryness from three different oil palm ages using drought indices proxy to derive information on spatial dryness. Two drought indices were used in this study including the Temperature Vegetation Dryness Index (TVDI) and the Crop Water Stress Index (CWSI). Our results showed that the TVDI value ranged from 0.46 to 0.92, while the CWSI value ranged from 0.18 to 0.80. The highest value of TVDI was found in 2-years old oil palm, and the lowest values was in the 11-years old oil palm. Our CWSI analysis confirmed this pattern that young oil palm has a high moisture stress, as many peat-soils were exposed to direct sunlight. Our findings also revealed that the TVDI and the CWSI were able to interpret soil moisture dynamics on the top layers (10 cm).

scholarly journals Karakteristasi Bakteri Asal Lahan Gambut Jambi dan Potensinya Sebagai Pupuk Hayati

2020 ◽  
Vol 44 (1) ◽  
pp. 1
Author(s):  
Etty Pratiwi ◽  
Taruna D. Satwika ◽  
Alina Akhdiya ◽  
Fahmuddin Agus
Keyword(s):  
Bacillus Cereus ◽  
Oil Palm ◽  
Bacillus Pumilus ◽  
Extreme Environments ◽  
Rhodococcus Equi ◽  
Low Ph ◽  
Field Conditions ◽  
Peat Soils ◽  
Low Concentration ◽  
Increasing Trend

<p><strong>Abstak</strong>. Penggunaan pupuk hayati di Indonesia menunjukkan tren yang semakin meningkat.  Pupuk hayati mulai banyak diaplikasikan di lahan optimal maupun di lahan suboptimal, termasuk lahan rawa dan lahan gambut. Tanah gambut memiliki banyak kendala, diantaranya adalah pH yang sangat rendah, dan kandungan serta ketersediaan unsur hara yang sangat rendah. Selain itu lahan gambut pada musim penghujan akan terjadi penggenangan air, sedangkan pada musim kemarau akan terjadi kekeringan. Untuk mendapatkan mikroba yang mampu bertahan di lingkungan ekstrim seperti ini kami isolasi mikroba <em>indigenous</em> dari lahan gambut di Tanjung Jabung Timur, Jambi. Daya adaptasi dan daya kompetisi mikroba di lapangan, merupakan dasar pemilihan mikroba sebagai pupuk hayati. Hasil pengujian karakterisasi dan fungsional isolat-isolat bakteri asal tanah gambut perkebunan kelapa sawit menunjukkan isolat <em>Bacillus cereus </em>1, <em>Bacillus soli</em> 2, <em>Mycobacterium cubense</em> 8, <em>Rhodococcus equi</em> 15, <em>Bacillus pumilus</em> 21 dan <em>Nocardia jiangxiensis</em> 24 memiliki potensi sebagai pupuk hayati pemacu tumbuh tanaman. Bakteri-bakteri ini tidak bersifat patogen terhadap tanaman dan hewan mamalia, mampu memproduksi fitohormon IAA, mampu melarutkan P dan memfiksasi nitrogen.</p><p> </p><p><strong>Abstrac. </strong>The use of biofertilizers in Indonesia shows an increasing trend. Biofertilizer is widely applied in optimal or suboptimal land, including swamp lands and peatlands. Peat soils has many problems, including very low pH, and very low concentration and availability of nutrients. In addition, peatlands are prone to seasonal waterlogging and drought. To be able to utilize microbes that survive the extreme environments, we isolated indigenous microbes from peatland in Tanjung Jabung Timur, Jambi. The adaptability and survival of the microbes in the field conditions are the basis for choosing microbes as biofertilizer. Results of the characterization and functional isolates of bacteria from peat soils under oil palm plantations at the site show that isolates of <em>Bacillus cereus</em> 1, <em>Bacillus soli</em> 2, <em>Mycobacterium cubense</em> 8, <em>Rhodococcus equi</em> 15, <em>Bacillus pumilus</em> 21 and <em>Nocardia jiangxiensis</em> 24 had the potential as biofertilizers. These bacteria were not pathogenic to plants and mammals, could produce IAA phytohormones, and were able to solubilize P and fix nitrogen.</p>

scholarly journals Isolation of Cellulolytic Bacteria from Peat Soils as Decomposer of Oil Palm Empty Fruit Bunch

2017 ◽  
Vol 22 (1) ◽  
pp. 47-53
Author(s):  
. Gusmawartati ◽  
. Agustian ◽  
. Herviyanti ◽  
. Jamsari
Keyword(s):  
Oil Palm ◽  
Reducing Sugars ◽  
Peat Soil ◽  
Cellulolytic Activity ◽  
Empty Fruit Bunch ◽  
Cellulolytic Bacteria ◽  
Peat Soils ◽  
Bacterial Colony ◽  
Tropical Peat ◽  
Two Stages

The aim of the research was to find out potential strainsof cellulolytic bacteria isolated from two tropical peat soils and to studythe potency of the isolated bacteria to decompose oil palm empty fruit bunch (EFB). The research was carried out in two stages: (1) isolation of cellulolytic bacteria from peat soils and (2) testing the potency of isolated bacteria to decompose oil palm EFB. The cellulolytic bacteria were isolated from two peat soils, i.e. a natural peat soil (forest) and a cultivated peat soil (has been used as agriculture land). Isolation of cellulolytic bacteria was conducted by preparing a series dilution of culture solutions using a streak plate method in a carboxymethyl cellulose(CMC) selective medium.Isolates that were able to form clear zones surrounding their bacterial colony were further tested to study the potency of the isolates to decompose cellulose in oil palm EFB. The cellulolytic activity of the selected isolates were further determined via production of reducing sugars in an oil palm EFB liquid medium using Nelson-Somogyi method. The results showed that there are six isolates of cellulolytic bacteria that have been identified in two tropical peat soils used in the current study. Two isolates are identified in a natural peat soil (forest) and four isolates are identified in a cultivated peat soil. The isolates collected are identified as Bacillus sp., Pseudomonassp. and Staphylococcus sp. Among the isolates, an isolate of GS II-1 produces the highest concentration of reducing sugars, namely 0.1012 unitmL-1or 101 ppm, indicating that the isolate of GS II-1 is highly potential to decompose oil palm EFB. Therefore, the isolate of GS II-1 can be used as a decomposer in the bio-conversion processes of oil palm EFB.Keywords: isolation, bacteria, cellulolytic, oil palm empty fruit bunch (EFB), peat soil

scholarly journals Greenhouse Gas Emissions from Peat Soils Cultivated to Rice Field, Oil Palm and Vegetable

2012 ◽  
Vol 17 (2) ◽  
pp. 105 ◽  
Author(s):  
Abdul Hadi ◽  
Dedi Nursyamsi Affandi ◽  
Rosenani Abu Bakar ◽  
Kazuyuki Inubushi
Keyword(s):  
Oil Palm ◽  
Rice Field ◽  
Elaeis Guineensis ◽  
Peat Soil ◽  
N2o Emission ◽  
Peat Soils ◽  
Weekly Basis ◽  
Gas Emissions ◽  
Global Warming Potentials ◽  
Water Nutrients

Presently, about 20% of oil palm (Elaeis guineensis Jacq) fields in Indonesia are on peat soil, in addition to that otherarea of peat soil has been conventionally used for rice field and vegetables. To elucidate the global warmingpotentials of peat soils cultivated to oil palm, vegetable or rice field, field experiment has been carried out in SouthKalimantan. Air samples were taken from rice field, oil palm and vegetable fields in weekly basis for six month periodand analyzed for concentrations of N2O, CH4 and CO2. The global warming potentials (GWP) of the three gases werecalculated by multiplying the emission of each gas with their respective mole warming potential. This step wasfollowed by the addition of the three gases’ GWP to have the total GWP. The results showed that the emissions ofgreenhouse gases from peat soils changed seasonally and varied with the crops cultivated. Oil palm has resultedthe highest GWP, mostly contributed by N2O. There was no statistical different in total GWP of paddy andvegetable fields. The annual N2O emission from oil palm field was 4,582 g N ha-1 yr-1. Water, nutrients and organicmatter managements are among the potential techniques to minimize gas emissions from oil palm field which needfield trials.

scholarly journals PEMANFAATAN ABU JENJANG KELAPA SAWIT SEBAGAI SUMBER K PADA TANAH GAMBUT DAN PENGARUHNYA TERHADAP PRODUKSI JAGUNG

Jurnal Solum ◽  
2009 ◽  
Vol 6 (2) ◽  
pp. 95
Author(s):  
Teguh Budi Prasetyo
Keyword(s):  
Oil Palm ◽  
Corn Yield ◽  
Optimum Level ◽  
Peat Soils ◽  
Corn Production ◽  
Green House ◽  
Randomized Design ◽  
Oil Palm Ash

This research was conducted in Green House at Agriculture Faculty of Andalas University from September 2000 to Maret 2001.  The objective of the research was to study of  the ash of oil palm stem as K source and to determine optimum level to corn production on peat soils.  The experiment was designed on Complete Randomized Design with 9 treatments and 3 replications.  The treatments consisted of without oil palm ash, 100, 200, 400, 600, 800 kg/ha and 100, 200 kg KCl/ha.  The result showed that application of the ash of oil palm can increase  pH and K  soil content.  The highest pH and K soil content was obtained with 1000 kg ash/ha namely 5,56 and 5,28 me/100 g. Application 400kg ash/ha can substitute 200 kg KCl/ha.  The highest corn yield was obtained with application  800kg ash/ha but not significantly with application 400 and 600 kg/haKey words:  ash, K resource, corn production

Evaluation on the decomposability of tropical forest peat soils after conversion to an oil palm plantation

2017 ◽  
Vol 587-588 ◽  
pp. 381-388 ◽  
Author(s):  
Faustina E. Sangok ◽  
Nagamitsu Maie ◽  
Lulie Melling ◽  
Akira Watanabe
Keyword(s):  
Tropical Forest ◽  
Oil Palm ◽  
Peat Soils ◽  
Oil Palm Plantation

scholarly journals PENGARUH PEMBERIAN PUPUK ROCK PHOSPHATE TERHADAP PRODUKSI TANDAN BUAH SEGAR (TBS) KELAPA SAWIT (Elaeis guineensis. Jacq)

2018 ◽  
Vol 14 (1) ◽  
pp. 61-64
Author(s):  
Muhamad Rizal
Keyword(s):  
Oil Palm ◽  
Phosphate Rock ◽  
Rock Phosphate ◽  
Elaeis Guineensis ◽  
Phosphate Fertilizer ◽  
Fruit Weight ◽  
Fresh Fruit ◽  
Final Conclusion ◽  
Palm Trees ◽  
Fresh Fruit Bunches

This study aimed to determine the effect of rock phosphate fertilizer with various doses of the production of oil palm fresh fruit bunches. Results from this study is the final conclusion of phosphate rock fertilizer does not affect the measurement of the diameterbuah fresh, fresh fruit weight and number brondolan fall and was advised to continue observation until 6 months after treatment applications in order to look the influence of rock phosphate. Rock Phosphate Fertilizers no real effect on the diameter of oil palm fresh fruit bunches in the cultivation of oil palm trees suggested in this study a longer observation that 6 months.

scholarly journals Exploration of Lignocellulolytic Microbes in Oil Palm Rhizosphere on Peat Soils and Their Respiration Activities

2021 ◽  
Vol 15 (1) ◽  
pp. 27-35
Author(s):  
HAPPY WIDIASTUTI ◽  
◽  
SISWANTO SISWANTO ◽  
DARMONO TANIWIRYONO ◽  
HERU BAGUS PULUNGGONO ◽  
...  
Keyword(s):  
Oil Palm ◽  
Peat Soils
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