Papers by fitrah murgianto
IOP Conference Series: Earth and Environmental Science
Palm oil mill has by-products from processing fresh fruit bunch such as empty fruit bunch and fru... more Palm oil mill has by-products from processing fresh fruit bunch such as empty fruit bunch and fruit fiber that benefits oil palm plantation. The aim of this research was to observe earthworms population and soil chemical properties after the application of palm oil by-products. This research was conducted in Pantai Harapan Estate PT Bumitama Gunajaya Agro, Central Kalimantan from July 2020 - May 2021. The organic matter was used in this study were empty bunch, empty bunch compost, and pressed fruit fiber, applied in an oil palm circle in two different soil types. The earthworms population was observed before and six months using a square sampling size 1 m x 1 m at a depth of 0,15 m. The earthworms population after six months with organic application both in dystrudepts and haplohumods range from 46 to 119 individuals/m2. Earthworms population increased 22,17% and 71,33% after six month, compared to control decrease 48,21% and 68,51% in haplohumods and dystrudepts respectively. Soil ...
IOP Conference Series: Earth and Environmental Science, 2022
The Rat was one of the main pests in oil palm plantations cause able to significantly reduce oil ... more The Rat was one of the main pests in oil palm plantations cause able to significantly reduce oil palm yield. This research aimed to know the role of T. alba in controlling rat pest attacks in oil palm plantations. Observations were made on estates that had different ratios/hectare of T. alba nest boxes such as Pantai Harapan Estate (1:54), Kruing Estate (1:80), and Sungai Mirah Estate (1: 162). The presence of T. alba was observed every month at each nest box. The attack rate of rats was observed every month during January – December 2020 through a census attack in each plant block. Kruing estate was the highest nest box occupancy rate of T. alba of 37 %. The occupancy rates of Pantai Harapan Estate and Sungai Mirah Estate were 31% and 6%, respectively. While the rate of rat attacks in Pantai Harapan Estate, Kruing Estate, and Sungai Mirah Estate were 0.70 % a, 0.60 % a, 2,30 % b, respectively. The barn owl T. alba can control the attack of rats naturally and reduce the use of roden...
Jurnal Hama dan penyakit tumbuhan tropika, Jan 9, 2023
The whitefly Bemisia tabaci (Gennadius) is one of the important soybean pests which can reduce pr... more The whitefly Bemisia tabaci (Gennadius) is one of the important soybean pests which can reduce production up to 80 %. Soybean defense mechanism against B. tabaci is affected by the physical characteristics of the leaf surface, e.g. leaf thickness, density of trichomes, and sticky glandular trichomes. The objective of this research was to investigate B. tabaci populationtrichome density relationship on ten soybean varieties. The experiment was carried out in Ngale Station, Ngawi District, East Java. The tested soybean varieties were Anjasmoro,
Jurnal Ilmu Pertanian Indonesia
The quality of CPO (Crude Palm Oil) is determined by the Free Fatty Acid (FFA) with the standard ... more The quality of CPO (Crude Palm Oil) is determined by the Free Fatty Acid (FFA) with the standard value below 5%. High FFA in CPO will cause further difficulties due to low refining rate and quality like rancidness and odor. The objective of this research was to determine the factors that affect the FFA content in CPO. This research was conducted from January until April 2021. Fruit samples were collected from BKLE and PNRE East Kotawaringin and analyzed to Analytical Laboratory PT BGA. The FFA value was determined using the titration method according to Indonesian National Standard (SNI). Based on this research, several factors such as rat and moth attacks, fruit maturity, fruit handling, and delayed delivery to the palm oil mill affected the FFA value. These factors caused an increase in the FFA value up to 41.10%‒204% compared to the average FFA value is only 0.77%‒1.29%. Therefore, minimizing the pre‐processing problem will reduce the potential of FFA value increment so that good...
Jurnal Agro Industri Perkebunan, 2021
Harvesting fresh fruit bunches (FFB) is an important activity in the oil palm plantation industry... more Harvesting fresh fruit bunches (FFB) is an important activity in the oil palm plantation industry. This study aimed to analyze the potential content of palm oil at the level of loose fruit that falls on the oil palm circle. Observations were made on five fresh fruit bunches with criteria 1, 3, and 5 respectively loose fruit per bunch that falls on the oil palm circle from oil palm trees that were 22, 16, 12, and 7 years old. All sample fresh fruit bunches were analyzed for potential oil to bunch and oil to wet mesocarp in the analytical laboratory of Bumitama Gunajaya Agro. Content of oil to wet mesocarp in loose fruit 1, 3, and 5 were 48,50 % b, 51,98 % a, and 53,21 % a respectively. While the content of oil to bunch in loose fruit 1, 3, and 5 were 24,19 % a, 25,52 % a, and 25,71 % a respectively. The highest potential for oil content occurs in ripe palm fruit with a level of loose fruit 5 grains per bunch that falls on that oil palm circle. Five grains per bunch on the oil palm ci...
... Kerala Karnataka Tamil Nadu Srinivasa 2000 Ranjith et al. 1996 Mani &... more ... Kerala Karnataka Tamil Nadu Srinivasa 2000 Ranjith et al. 1996 Mani & Krishnamoorthy 1999aGajendra Babu&David 1999 Apiaceae Centella asiatica Urb Karnataka Muralikrishna 1999 Apocynaceae Apocynaceae Apocynaceae Apocynaceae Apocynaceae Apocynaceae ...
Advances in Biological Sciences Research, 2022
Bagworm is a defoliating insect in oil palm plantations that recently became the main problem sin... more Bagworm is a defoliating insect in oil palm plantations that recently became the main problem since reported can decrease the production significantly. Metisa plana, Mahasena corbetti, Pteroma pendula are types of bagworms can be found in several areas in Indonesia. The objective of this study was to identify bagworm species (Lepidoptera: Psychidae) on oil palm plantation in PT Bumitama Gunajaya Abadi in Pangkalan Bun, Central Kalimantan, Indonesia. A total of 75 bagworms based on survey results from 12 oil palm plant blocks (± 360 hectares) were collected and brought to the Pundu Entomology Laboratory for identification. The bagworm was identified as Manatha conglacia known as an ice cream cone bagworm based on morphological characteristics of the bag. The results of the census revealed that the highest population was found in block W60 with a total population rate of 5.62 larvae of bagworms per frond. This new bagworm report has now become guidance for identification for type of bagworm attack in PT Bumitama Gunajaya Agro, since this bagworm can cause serious damage with defoliating as other types of bagworms.
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science), 2022
Epiphytic weeds living on oil palm trunks will complicate harvesting activities. In addition, the... more Epiphytic weeds living on oil palm trunks will complicate harvesting activities. In addition, the presence of this weed can increase the risk of accidents being hit by fruit during harvesting. The objective of this research was to obtain herbicide and its efficient concentrations to control epiphytic weeds using root infusion method. The research was arranged in a single factor completely randomized design (CRD) with five treatments and five replications. Active ingredients of herbicide that used were methyl metsulfuron at a concentration of 20%, 30%, and 40%, glyphosate 30%, and triclopyr + diesel fuel at a ratio of 1:19. All treatments except triclopyr were diluted in 100 ml water for each epiphytic weed. Weed mortality rate (%) was observed every week for one month. The results showed that a solution of 30% methyl metsulfuron herbicide in 100 ml of water and 30% glyphosate in 100 ml of water was the most optimal treatment in controlling epiphytic weeds. Cutting the entire suction...
Planta Tropika: Journal of Agro Science
Insecticide application is a common practice done by farmers to control the whitefly Bemisia taba... more Insecticide application is a common practice done by farmers to control the whitefly Bemisia tabaci. While the use of insecticide can suppress the whitefly population, the cost of soybean production is also increased. The objective of this research was to compare the whitefly infestation and economic of two whitefly control methods on soybean production. Two sets of experiments were done, one set with insecticide application and another one without insecticide application. Ten soybean cultivars were used in each set of experiment with completely randomized design and three replications. The whitefly infestation was observed weekly on sample plants on each plot. The benefit and R/C ratio were calculated based on revenue and total costs of soybean production. The average whitefly (egg and nymphs) population on the plots with insecticide application was 4.95 for egg and 5.72 for nymph per leaf, which was lower than those without insecticide application 11.76 for egg and 10.86 for nymph per leaf. The average benefit and R/C ratio for the plots with insecticide application were IDR 9,654,507/ha and 1.51 respectively, while the average benefit and R/C ratio for the plots without insecticide application were IDR 8,706,299/ha and 1.55 respectively. The study can be concluded that growing soybean without insecticide treatment was more efficient than growing soybean with insecticide applications..
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Papers by fitrah murgianto