PENGARUH UMUR TANAMAN KELAPA SAWIT TERHADAP KELIMPAHANSERANGGA PENYERBUK (Elaeidobius kamerunicus)

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Saufiah Saufiah ◽  
Chairudin Chairudin ◽  
Sumeinika Fitria Lizmah
Keyword(s):  
Palm Oil ◽  
Oil Palm ◽  
Age Groups ◽  
Plant Age ◽  
Age Group ◽  
Average Production ◽  
Male Flowers ◽  
Sample Method ◽  
Female Flowers ◽  
Elaeidobius Kamerunicus

Oil palm plants are a type of plant that undergoes pollination through the mediation of polinator agents because of the position of male flowers and female flowers in separate flowers. Elaeidobius kamerunicus is an effective type of pollinating insect in oil palm plants. This research was conducted at this research carried out on oil palm plantations of PT. Karya Tanah Subur (KTS) of West Aceh Regency. This research was conducted from February to March 2018. The collection of insect samples using the Purpose Sample method (sample determined), which uses 4 blocks of plants with different age groups of 4,5,6 and 7 years, respectively. Each age group on each block uses 6 sample plants. The results show the abundance of pollinator insects not influenced by plant age and altitude, but are influenced by the time of sampling. Domination index of palm oil pollinator insect simpons at PT. Karya Tanah Subur (KTS) is worth 0.9280 which means high evenness. The abundance of oil palm pollinators affects the average production of oil palm at PT. Karya Tanah Subur (KTS) Keywords: oil palm, Elaeidobius kamerunicus, pollinator 

scholarly journals Pollen load and distribution on the body of Elaeidobius kamerunicus Faust. (Coleoptera: Curculionidae) within oil palm plantations

2020 ◽  
Vol 17 (2) ◽  
pp. 81
Author(s):  
Van Basten Tambunan ◽  
Bandung Sahari ◽  
Damayanti Buchori ◽  
Purnama Hidayat
Keyword(s):  
Oil Palm ◽  
The Body ◽  
Body Parts ◽  
Pollen Load ◽  
Male And Female ◽  
Male Flowers ◽  
Pollen Distribution ◽  
Male To Female ◽  
Female Flowers ◽  
Elaeidobius Kamerunicus

<p>The African oil palm weevil,<strong> </strong><em>Elaeidobius kamerunicus</em> is an effective pollinator of oil palm. Each individual palm produces exclusively male or female inflorescence so that the success of pollination depends on the ability of the pollinator to transfer pollen from male to female flowers. The objective of this research was to study the amount of pollen carried by <em>E. kamerunicus</em> between male and female inflorescences (pollen load) and the amount of pollen carried on each part of the weevil’s body (pollen distribution). Fifty each of male and female  <em>E. kamerunicus</em> individuals were collected from male and female flowers on trees in 3 locations: Siantar (North Sumatra), Dramaga (West Java), and Morowali (Central Sulawesi). Data on pollen load and pollen distribution on the weevil’s body were analyzed using <em>ImageJ</em> software. Results show that <em>E. kamerunicus</em> individuals collected more pollen from male flowers than from female flowers. In addition, male insects carried more pollen on their bodies than female insects. Pollen distribution on weevil body parts was highest on the elytra, followed by the thorax, abdomen, legs, and head respectively.</p>

The DEVELOPMENT OF Elaeidobius kamerunicus FAUST POPULATION AFTER INTRODUCTION AND THE IMPROVEMENT OF OIL PALM FRUIT SET IN SERAM ISLAND, MOLLUCAS, INDONESIA

2016 ◽  
Vol 24 (1) ◽  
pp. 47-55
Author(s):  
Agus Eko Prasetyo ◽  
Agus Susanto
Keyword(s):  
Sex Ratio ◽  
Oil Palm ◽  
Fruit Set ◽  
Average Risk ◽  
Palm Fruit ◽  
Male And Female ◽  
Risk Of Death ◽  
North Sumatra ◽  
Female Flowers ◽  
Elaeidobius Kamerunicus

Elaeidobius kamerunicus is the main pollinating agent in oil palm plantations in Indonesia today. The development of oil palm plantations in new areas requires introduction of these insects, moreover the new areas are located on different islands. First introduction of Elaeidobius kamerunicus Faust had been done from North Sumatra to Seram Island on 23 September 2013. The introduction was performed on larva and pupa stadium in 4-5 days post anthesising of male inflorescences. The introduction of E. kamerunicus using plywood boxes has an average risk of death by 7.89% at 6 days delivery period. Observation before releasing of the weevils showed that this insect was not detected in both of oil palm male and female flowers and the oil palm fruit set was very low approximately 11.27%. For about 500 weevils/ha were released in Marnuhu estate and could be developed into 362,401 weevils/ha in 5 months with 97.86% of oil palm sex ratio. The oil palm fruit sets were increased after 1 and 2 months introduction, 53.70% and 75.56 %, respectively. The lower sex ratio of oil palm or the more availability of male inflorescences make growth of E. kamerunicus population became faster and the greater number of weevils that visiting anthesising of female flowers make the higher value of oil palm fruit set.

The DEVELOPMENT OF Elaeidobius kamerunicus FAUST POPULATION AFTER INTRODUCTION AND THE IMPROVEMENT OF OIL PALM FRUIT SET IN SERAM ISLAND, MOLLUCAS, INDONESIA

2018 ◽  
Vol 24 (1) ◽  
pp. 47-55
Author(s):  
Agus Eko Prasetyo ◽  
Agus Susanto
Keyword(s):  
Sex Ratio ◽  
Oil Palm ◽  
Fruit Set ◽  
Average Risk ◽  
Palm Fruit ◽  
Male And Female ◽  
Risk Of Death ◽  
North Sumatra ◽  
Female Flowers ◽  
Elaeidobius Kamerunicus

Elaeidobius kamerunicus is the main pollinating agent in oil palm plantations in Indonesia today. The development of oil palm plantations in new areas requires introduction of these insects, moreover the new areas are located on different islands. First introduction of Elaeidobius kamerunicus Faust had been done from North Sumatra to Seram Island on 23 September 2013. The introduction was performed on larva and pupa stadium in 4-5 days post anthesising of male inflorescences. The introduction of E. kamerunicus using plywood boxes has an average risk of death by 7.89% at 6 days delivery period. Observation before releasing of the weevils showed that this insect was not detected in both of oil palm male and female flowers and the oil palm fruit set was very low approximately 11.27%. For about 500 weevils/ha were released in Marnuhu estate and could be developed into 362,401 weevils/ha in 5 months with 97.86% of oil palm sex ratio. The oil palm fruit sets were increased after 1 and 2 months introduction, 53.70% and 75.56 %, respectively. The lower sex ratio of oil palm or the more availability of male inflorescences make growth of E. kamerunicus population became faster and the greater number of weevils that visiting anthesising of female flowers make the higher value of oil palm fruit set.

scholarly journals KEANEKARAGAMAN SERANGGA DI KAWASAN IUPHHK-HTI PT. MUARA SUNGAI LANDAK KABUPATEN MEMPAWAH KALIMANTAN BARAT

2019 ◽  
Vol 8 (3) ◽  
Author(s):  
Fredicus Ricco ◽  
Kustiati Kustiati ◽  
Riyandi Riyandi
Keyword(s):  
Environmental Factors ◽  
Light Trap ◽  
Age Groups ◽  
Plant Age ◽  
Insect Diversity ◽  
Age Group ◽  
Dominant Group ◽  
Number Of Species ◽  
Trapping Methods ◽  
Number Of Individuals

Insect is a dominant group of animals on earth with the most common number of species and individuals compared to other animal groups. Research about insect diversity in the forest area of IUPHHK-HTI PT. Muara Sungai Landak in swamp peat forest should be done to know its role. The research was aimed to determine the species of insects and to know the effect of environmental factors to insects in the area of PT. Muara Sungai Landak. Insects collected from five different age groups of plants with trapping methods using pit fall trap, yellow pan trap, and light trap. Insects found in the area of PT. Muara Sungai Landak counted as many as to 282 individuals consisting of 18 species, 15 families, and 6 orders. The most widely found number of individuals was the species of Condylostylus longicornis. The highest diversity value was found in the two-year plant age group with a diversity value of H' = 1,69654, while the lowest diversity value was found in the three-year plant age group with the value H ' = 1,20751

scholarly journals Efficacité De La Pollinisation Entomophile Du Palmier A Huile Dans Les Plantations Du Sud-Ouest Et Du Sud-Est De La Côte d’Ivoire

2018 ◽  
Vol 14 (12) ◽  
pp. 392
Author(s):  
Kouakou Malanno ◽  
Hala Kinampinan Adelphe ◽  
Hala N’klo ◽  
Dagnogo Mamadou
Keyword(s):  
Cote D'ivoire ◽  
Oil Palm ◽  
Côte D’Ivoire ◽  
Fruit Set ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Palmier À Huile ◽  
Positive Correlations ◽  
Female Flowers ◽  
Elaeidobius Kamerunicus

Low fruit set rates in oil palm plantations may be related to inadequate entomophilous pollination. The objective of this study was to follow the variations of fruit set and to determine its relationships with the entomofauna visiting inflorescences at La Mé, Grand-Béréby and Iboké in Côte d’Ivoire. Densities of the insects were followed out on male and female inflorescences during 12 months. The fruit set rate was also monitored over the same period on young bunches. The results showed that pollination is provided by Elaeidobius kamerunicus, Elaeidobius plagiatus, Elaeidobius singularis, Elaeidobius subvittatus, Microporum congolense, Microporum dispar and Atheta burgeoni. At La Mé, the fruit set rate was negatively correlated with the damage of Prosœustus spp (r = -0.43, p = 0.01) and positively with the abundance of E. kamerunicus and E. plagiatus on female flowers (respectively: r = 0.60, p = 0.002 and r = 0.47, p = 0.020). At Grand-Béréby, it is negatively correlated with the damage of Prosœustus spp (r = -0.42, p = 0.01). At Iboké, positive correlations were observed with the density of E. subvittatus (r = 0.40, p ˂ 0.001), M. congolense (r = 0.41, p = 0.046), M. dispar (r = 0.57, p = 0.004) and A. burgeoni (r = 0.65, p ˂ 0.001). This study highlighted the necessity to manage the populations of pollinators and the inflorescences pest insects to improve the production of oil palm in Côte d'Ivoire.

scholarly journals Analisis Faktor-Faktor yang Mempengaruhi Produksi Kelapa Sawit Rakyat di Desa Tebing Linggahara Kecamatan Bilah Barat Kabupaten Labuhanbatu

2020 ◽  
Vol 2 (1) ◽  
pp. 60-70
Author(s):  
Yudi Siswanto ◽  
Zulkarnain Lubis ◽  
Erwin Nyak Akoeb
Keyword(s):  
Palm Oil ◽  
Oil Palm ◽  
Linear Regression Analysis ◽  
Oil Production ◽  
Education Level ◽  
Economic Life ◽  
Plant Age ◽  
Primary Data ◽  
Coefficient Of Determination ◽  
Land Area

Palm oil has advantages compared to other vegetable oils such as coconut oil, soybean, or sunflower oil, its production per hectare is high, its economic life is long, and its use varies. This study aims to determine the effect of community palm oil production factors in the village of Tebing Linggahara, West Bilah District, Labuhanbatu Regency. The data used are primary data sourced from 176 oil palm farmers, by providing a questionnaire list. The research model is a quantitative model using multiple linear regression analysis techniques, using the SPSS version 16.0 program. The results showed that land area, seed, fertilizer, labor, plant age, and education level had an influence on palm oil production in Tebing Linggahara Village, West Bilah District, Labuhanbatu Regency, but other sources outside of oil palm farming had an effect on production palm oil for the people. The coefficient of determination R2 = 0.867 can be interpreted that oil palm production of 86.7% can be influenced by land area, seeds, fertilizer, labor, plant age, education level, and other sources outside of oil palm agriculture.

DROUGHT AND HAZE EFFECTS ON OIL PALM ECOPHYSIOLOGY AND PRODUCTIVITY IN SOUTH SUMATRA

2017 ◽  
Vol 25 (3) ◽  
pp. 137-146
Author(s):  
Muhdan Syarovy ◽  
Iput Pradiko ◽  
Eka Listia ◽  
Nuzul Hijri Darlan ◽  
Fandi Hidayat ◽  
...  
Keyword(s):  
Oil Palm ◽  
Dry Season ◽  
Active Radiation ◽  
Dry Spell ◽  
Rate Of Photosynthesis ◽  
Addition Rate ◽  
Palm Fronds ◽  
Female Flowers ◽  
Elaeidobius Kamerunicus ◽  
July August September

Prolonged dry season, land fire, and haze disturbance occurred during El Niño 2015 in Indonesia. A study had been conducted to identify impacts of prolonged dry season and haze disturbance on ecophysiology of oil palm in Dawas Estate, South Sumatra. The study was conducted by collecting data of precipitation, visibility, oil palm fronds addition, rate of photosynthesis, Photosinthetically Active Radiation (PAR), and Elaeidobius kamerunicus activity on mature and immature palm before, during and after the incidence of drought and haze disturbance. T test was used for statistics analysis. The results showed that water deficit was recorded in July, August, September and October, it was 45, 92, 80, and 148 mm respectively. Dry month (precipitation was ≤ 60 mm) was 2 months, while dry spell occurred 3 times in June to July (33 days), August to September (42 days), and September to October (40 days). Haze disturbance occurred in August to November, it had decreased visibility to 80%. During drought stress and haze disturbance, there was decrease in fronds addition, photosynthesis rate and bunch productivity in following year. In addition, haze disturbance had decreased number of Elaeidobius kamerunicus visitting female flowers up to 95%.

DROUGHT AND HAZE EFFECTS ON OIL PALM ECOPHYSIOLOGY AND PRODUCTIVITY IN SOUTH SUMATRA

2017 ◽  
Vol 25 (3) ◽  
pp. 137-146
Author(s):  
Muhdan Syarovy ◽  
Iput Pradiko ◽  
Eka Listia ◽  
Nuzul Hijri Darlan ◽  
Fandi Hidayat ◽  
...  
Keyword(s):  
Oil Palm ◽  
Dry Season ◽  
Active Radiation ◽  
Dry Spell ◽  
Rate Of Photosynthesis ◽  
Addition Rate ◽  
Palm Fronds ◽  
Female Flowers ◽  
Elaeidobius Kamerunicus ◽  
July August September

Prolonged dry season, land fire, and haze disturbance occurred during El Niño 2015 in Indonesia. A study had been conducted to identify impacts of prolonged dry season and haze disturbance on ecophysiology of oil palm in Dawas Estate, South Sumatra. The study was conducted by collecting data of precipitation, visibility, oil palm fronds addition, rate of photosynthesis, Photosinthetically Active Radiation (PAR), and Elaeidobius kamerunicus activity on mature and immature palm before, during and after the incidence of drought and haze disturbance. T test was used for statistics analysis. The results showed that water deficit was recorded in July, August, September and October, it was 45, 92, 80, and 148 mm respectively. Dry month (precipitation was ≤ 60 mm) was 2 months, while dry spell occurred 3 times in June to July (33 days), August to September (42 days), and September to October (40 days). Haze disturbance occurred in August to November, it had decreased visibility to 80%. During drought stress and haze disturbance, there was decrease in fronds addition, photosynthesis rate and bunch productivity in following year. In addition, haze disturbance had decreased number of Elaeidobius kamerunicus visitting female flowers up to 95%.

scholarly journals PENGGUNAAN BERBAGAI PLASMA NUTFAH KELAPA SAWIT KOLEKSI PPKS RIAU TERHADAP POPULASI SERANGGA PENYERBUK KELAPA SAWIT

2017 ◽  
Vol 4 (2) ◽  
pp. 114-121
Author(s):  
Amnesty Situmeang Situmeang
Keyword(s):  
Sampling Method ◽  
Total Population ◽  
Elaeis Guineensis ◽  
Germplasm Collection ◽  
Elaeis Oleifera ◽  
Insect Pollinators ◽  
Male Sex ◽  
Male Flowers ◽  
Female Flowers ◽  
Elaeidobius Kamerunicus

This research was to study the use of various oil palm germplasm collection of Indonesian Oil PalmResearch Institute (IOPRI) Riau on a population of insect pollinators (Elaeidobius kamerunicus Faust.)in Riau Province Kalianta Gardens. The research was conducted from May until July 2016 bya purposive sampling method. The results showed that E. kamerunicus total population of 9,123head/0.5ha with E. kamerunicus male sex ratio of 3,160 head/0.5ha and females amounted to 5,963heads/0.5ha in male flowers and a total population of 433 head/0.5ha with a ratio E. kamerunicusmale genitals of 182 head/0.5ha and females of 251 head/0.5ha in the female flowers. The populationof E. kamerunicus on more male flowers than the female flowers. Germplasm highest in V3 (AccessionWild Angola) on the male flowers and V1 (Elaeis guineensis) in the female flowers, while the lowestgermplasm on male and female flowers are V7 (Elaeis oleifera).

The Effect of Collagen Mediated Platelet Release on Plasma Prekallikrein Activation

1984 ◽  
Vol 51 (01) ◽  
pp. 037-041 ◽  
Author(s):  
K M Weerasinghe ◽  
M F Scully ◽  
V V Kakkar
Keyword(s):  
Platelet Aggregation ◽  
Healthy Volunteers ◽  
Platelet Rich Plasma ◽  
Age Groups ◽  
Inhibitory Effect ◽  
Age Group ◽  
Platelet Factor ◽  
Activated Platelets ◽  
Platelet Release ◽  
Collagen Treatment

SummaryCollagen mediated platelet aggregation caused -5.6 ± 6.7% inhibition and +39.1 ± 15.2% potentiation of prekallikrein activation in plasma from normal healthy volunteers between 20–40 and 50–65 years of age, respectively (n = 15, p <0.01). The amouns of platelet factor-four (PF4) released in the two groups were not significantly different. Collagen treatment in the presence of indomethacin caused +11.5 ± 3.6% and +59.6 ± 19.5% potentiation in the 20–40 and 50–65 age groups respectively (p <0.02). Adrenaline mediated platelet aggregation caused -55.2 ± 7.1% and -35.2 ± 8.3% inhibition in the 20–40 and 50–65 age groups, respectively. Collagen treatment of platelet-deficient-plasma and platelet-rich-plasma in EDTA also caused potentiation of prekallikrein activation.The results indicate that the observed degree of prekallikrein activation after platelet aggregation is a net result of the inhibitory effect of PF4 and the potentiatory effect of activated platelets. The potentiatory effect was greater after collagen treatment as compared to adrenaline treatment, and in the 50–65 age group as compared to the 20–40 age group.

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