scholarly journals EMISI CO2 PADA PERKEBUNAN KELAPA SAWIT (Elaeis guineensis Jacq) YANG DITUMPANGSARIKAN DENGAN TANAMAN PANGAN FASE BERBEDA DI TANAH MINERAL

2018 ◽  
Vol 8 (2) ◽  
pp. 31 ◽  
Author(s):  
Muhammad Misbahuddin ◽  
Ervina Aryanti ◽  
Endah Purnamasari ◽  
Indah Permanasari ◽  
Mokhamad Irfan ◽  
...  
Keyword(s):  
Co2 Emissions ◽  
Oil Palm ◽  
Corn Oil ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Mineral Soil ◽  
Vegetative Stage ◽  
Vegetative Phase ◽  
Random Block Design ◽  
Generative Phase

Land changes become oil palm plantations accused of contributing greenhouse gas emissions (GHG) included in the mineral soil, therefore it is very important to gather information in mineral soil CO2 emissions to support mitigation and adaption to climate change. This purpose of this research determine the CO2 emissions in the oil palm plantations planted crops in the vegetative stage and generative phase, as well as to determine the ratio of CO2 emissions in the oil palm plantations planted crops in the vegetative stage and generative phase. This research was conducted in November 2015 to February 2016 in Subdistrict of Tambang, District of Kampar, Province Riau. The method used in this research was Random Block Design with four treatments and replications. The treatments were oil palm-bera, oil palm-corn, oil palm-soy bean, oil palm-intercropping corn soy bean. The research showed that CO2 emissions in the oil palm plantation intercropped with crops (corn and soybeans) in the vegetative phase showed no significantly different. Comparison large of CO2 emissions indicated oil palm-corn vegetative phase.

scholarly journals EMISI GAS KARBON DIOKSIDA (CO2) PADA PERKEBUNAN KELAPA SAWIT (Elaeis guineensis Jacq) YANG DITUMPANGSARI DENGAN TANAMAN PANGAN DI LAHAN GAMBUT

2017 ◽  
Vol 7 (2) ◽  
pp. 35
Author(s):  
Muhammad Ridha Pahlipi ◽  
Ervina Aryanti ◽  
Mokhamad Irfan ◽  
Indah Permanasari ◽  
Ahmad Taufiq Arminudin
Keyword(s):  
Carbon Dioxide ◽  
Soil Temperature ◽  
Air Temperature ◽  
Palm Oil ◽  
Oil Palm ◽  
Carbon Dioxide Emissions ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Random Block Design ◽  
Carbon Dioxide Co2

Peat land conversion into oil palm plantations leads was increased emissions of carbon dioxide (CO2). Plants on peat land and environmental conditions believed to be factors in the emission of carbon dioxide (CO2). The porpuse of this research was determined the emissions of carbon dioxide (CO2) in oil palm plantations are intercropped with cropping crop on peat land and the influence of environmental factors on the emission of carbon dioxide (CO2). This research was conducted in September 2015 until April 2016 in Rimbo Panjang village, Subdiscrict Tambang, District of Kampar, Province of Riau. Cropping crop used were corn and soybeans. The method used in this study was a Random Block Design with four treatments and four replications. The treatments were palm - berau, palm oil - corn, palm oil - soybean, palm oil – intercropping (soybean – maize). Parameters measured were carbon dioxide (CO2), soil temperature, air temperature, the temperature of the lid, the depth of the water table and soil pH. The results showed that carbon dioxide emissions (CO2) in oil palm plantations are intercropped with cropping crop (corn and soybeans) were not significantly different. The influence of air temperature, soil temperature, the temperature of the lid, and the depth of the ground water level were inversely and  insignificant to the emission of carbon dioxide (CO2). As for getting nearly neutral pH, the emission of carbon dioxide (CO2) is increasing, but insignificant.

scholarly journals Respons Pertumbuhan Bibit Kelapa Sawit (Elaeis guineensis Jacq.) terhadap Pemberian Pupuk Organik Asal Pelepah Kelapa Sawit dan Pupuk Majemuk NPK

Agrikultura ◽  
2017 ◽  
Vol 28 (2) ◽  
Author(s):  
Mira Ariyanti ◽  
Gita Natali ◽  
Cucu Suherman
Keyword(s):  
Oil Palm ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Organic Fertilizers ◽  
Compound Fertilizer ◽  
Elaeis Guineensis Jacq ◽  
Four Levels ◽  
Palm Fronds

ABSTRACTThe growth response of oil palm (Elaeis Guineensis Jacq.) seedling toward the application of organic fertilizer from palm fronds and NPK compound fertilizerThe research was aimed to study the influence between organic fertilizers from palm fronds and NPK compound fertilizer to reduce NPK compound fertilizer in main nursery. The experiment was conducted from January to April 2017 at the Experiment Station Ciparanje, Faculty of Agriculture, Universitas Padjadjaran. The experimental design used was Randomized Block Design that arranged in factorial patterns with two factors and three replications. The fisrt factor was dosage of organic fertilizers from palm fronds consisted of three levels of 0 g/polybag, 800 g/polybag, and 1600 g/polybag and the second factor was dosage of NPK compound fertilizer consisted of four levels of 0 g/polybag, 20 g/polybag, 40 g/polybag, and 60 g/polybag. The result of the experiment showed that there was interaction effect between organic fertilizers from palm fronds and NPK compound fertilizer on height of seedling and dry weight of the shoot. The dosage of 1600 g/polybag organic fertilizers from palm fronds with the dosage of 20 g/polybag NPK compound fertilizer showed the best result in dry weight of the shoot.Keywords: Oil palm seedling, Main nursery, Organic fertilizer, Palm frond, NPK compound fertilizerABSTRAKPenelitian ini bertujuan untuk mengetahui pengaruh interaksi antara pupuk organik asal pelepah kelapa sawit dengan pupuk majemuk NPK yang baik untuk mengurangi penggunaan pupuk majemuk NPK di pembibitan utama kelapa sawit. Percobaan dilaksanakan dari bulan Januari sampai dengan April 2017 di Kebun Percobaan Ciparanje, Fakultas , Universitas Padjadjaran. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok dengan pola faktorial yang diulang sebanyak tiga kali. Faktor pertama meliputi dosis pupuk organik asal pelepah kelapa sawit terdiri dari tiga taraf yaitu 0 g/polybag, 800 g/polybag, dan 1600 g/polybag dan faktor kedua dosis pupuk majemuk NPK yang terdiri empat taraf yaitu 0 g/polybag, 20 g/polybag, 40 g/polybag, dan 60 g/polybag. Hasil percobaan menunjukkan bahwa terdapat pengaruh interaksi pupuk organik asal pelepah kelapa sawit dengan pupuk majemuk NPK terhadap tinggi tanaman dan bobot kering tajuk. Perlakuan pupuk organik asal pelepah kelapa sawit 1600 g/bibit dengan pupuk majemuk NPK 20 g/bibit menghasilkan bobot kering tajuk bibit kelapa sawit terbaik.Kata Kunci: Bibit kelapa sawit, Pembibitan utama, Pupuk organik, Pelepah kelapa sawit, NPK

scholarly journals Growth assessment of juvenile oil palm (Elaeis guineensis Jacq.) intercropped with fruit vegetables in a rainforest zone of Nigeria

2020 ◽  
Vol 116 (2) ◽  
pp. 217
Author(s):  
Ayodele Samuel OLUWATOBI ◽  
Kehinde Stephen OLORUNMAIYE ◽  
Olabisi Fatimo ADEKOLA
Keyword(s):  
Oil Palm ◽  
Elaeis Guineensis ◽  
Growth Parameters ◽  
Block Design ◽  
Significant Difference ◽  
Randomized Complete Block Design ◽  
Ondo State ◽  
Oil Palms ◽  
The Impact ◽  
Growth Assessment

<p>Improper intercropping of <em>Elaeis guineensis</em> with other crops has impaired the growth and development of the oil palm due to competition for environmental resources. The study was conducted to investigate the impact of intercropping on the growth of juvenile oil palm for 2 years. The research commenced during the rainy season of 2016 at an established juvenile oil palm plantation in Ala, Akure-North Local Government of Ondo State. Four fruit vegetables were intercropped separately within the alley of the plantation at 1, 2 or 3 m away from the oil palms in a randomized complete block design. Growth parameters of the juvenile oils were assessed. Results revealed that at 16 weeks after intercropping (WAI), the intercropped oil palm recorded better growth performance with higher canopy spread, number of frond, number of leaflets and trunk height (218.20, 37.00, 87.48 and 38.17 cm) respectively, than the sole oil palms (214.67, 32.83, 72.89 and 31.67 cm) respectively. There were no significant difference in all the growth parameters examined except canopy height (<em>p</em> &lt; 0.05). Juvenile oil palm cultivated in rainforest agroecological zone of Nigeria can be intercropped with fruit vegetables without any deleterious effect when intercropped at minimum of 1 m away from the oil palms.</p>

scholarly journals PENGARUH KONSENTRASI GIBERELIN (GA3) DENGAN WAKTU APLIKASI SEBELUM PANEN TERHADAP MUTU FISIK TANDAN BUAH SEGAR KELAPA SAWIT (Elaeis guineensis Jacq.)

2019 ◽  
Vol 1 (2) ◽  
pp. 62-70
Author(s):  
Sri Murti Tarigan ◽  
Eka Bobby Febrianto ◽  
Lufy Andria Cik
Keyword(s):  
Oil Palm ◽  
Elaeis Guineensis ◽  
Design Method ◽  
Block Design ◽  
Fruit Weight ◽  
Fresh Fruit ◽  
Physical Damage ◽  
Physical Quality ◽  
Fresh Fruit Bunches

Physical damage to fruit on oil palm fresh fruit bunches due to harvest and postharvest activities include injured fruit mesocarp, fruit weight loss, and loss in fruit bunches. One of the postharvest handlings that can maintain the physical quality of the fruit is by giving gibberellins (GA3). This research aims to determine the effect of the concentration of gibberellins (GA3) whit application time before harvest on the physical quality of postharvest oil palm fresh fruit bunches. The research was conducted at Afdeling VI Garden Cot Girek PT. Perkebunan Nusantara I and in the Cot Girek Palm Oil Factory laboratory. The time of the research was conducted in June until July 2019. The study used a non factorial randomized block design method with 4 treatment levels (0 mg/l, 50 mg/l, 100 mg/l, and 150 mg/l) with 3 replications. The administration of gibberellins has a significant effect on fruit loss and fruit weight reduction with the best concentration of gibberellins is 50 ppm but does not have a significant effect on pH, moisture content, and fruit free fatty acids.

scholarly journals Peranan Pupuk Organik dan NPK Majemuk terhadap Pertumbuhan Kelapa Sawit TBM 1 di Lahan Marginal

2016 ◽  
Vol 43 (3) ◽  
pp. 242
Author(s):  
Yan Sukmawan ◽  
Sudradjat , ◽  
Sugiyanta ,
Keyword(s):  
Vegetable Oil ◽  
Oil Palm ◽  
Vegetative Growth ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Organic Fertilizer ◽  
Marginal Land ◽  
Cow Dung ◽  
Elaeis Guineensis Jacq ◽  
One Year

<p>ABSTRACT</p><p>Oil palm (Elaeis guineensis Jacq.) is the most efficient vegetable oil producer. It produces five to seven times more vegetable oil per hectare than the other vegetable oil producing crops. The objective of this research was to study the role of organic and NPK compound fertilizers application to one-year-old oil palm (Elaeis guineensis Jacq.) on marginal land. The research was conducted at IPB-Cargilll Teaching Farm of Oil Palm, Jonggol, Bogor, West Java from March 2013 to March 2014. The experiment was carried out as factorial experiment in a randomized block design with three replications. The first factor was organic fertilizer consisted of 0, 15, and 30 kg per palm. The second factor was NPK compound fertilizers 15:15:15 consisted of 0, 1.3 and 2.6 kg per palm. The results showed that no interaction effect between organic and NPK compound fertilizers on all of variables observed. Marginal soils in Jonggol required high rate of fertilizers to produce good performance of one-year-old oil palm. Application of 30 kg organic fertilizer per palm or 2.6 kg NPK compound fertilizers 15:15:15 per palm resulted in the highest vegetative growth of one-year-old oil palm on marginal land in Jonggol.</p><p>Keywords: cow dung, critical nutrient level, slow release fertilizer, Ultisols, vegetative growth</p>

scholarly journals PEMBERIAN BEBERAPA ZPT ORGANIK TERHADAP BEBERAPA VARIETAS BIBIT KELAPA SAWIT (Elaeis guineensis Jacq.) DI PRE-NURSERY

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Yazid Habiby Lubis ◽  
Mita Setyowati ◽  
Aboe B. Saidi
Keyword(s):  
Oil Palm ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Coconut Water ◽  
Factor V ◽  
Organic Growth ◽  
Randomized Block Design ◽  
Elaeis Guineensis Jacq ◽  
Materials Used ◽  
Experimental Garden

The aims of this study was to determine the effect of several organic growth regulatory on several varieties of oil palm seedlings (Elaeis guineensis Jacq) in Pre Nursery. The research was carried out in the experimental garden of the Faculty of Agriculture, Teuku Umar University, West Aceh, from March until finished. The materials used were Organic growth regulatory in the form of 50 cc coconut water, 50 cc union extract and 50 cc bamboo shoot extract. While the varieties of oil palm seedlings are varieties that yangambi, simalungun and 239 from IOPRI Medan. This study used a factorial randomized block design (RBD) 4 X 3 with 3 replications. Giving growth regulatory (Z) consists of 4 levels, namely: Z0 = Control, Z1 = Coconut water, Z2 = Shallot Extract, Z3 = Bamboo Extract, while Variety factor (V) consists of 3 levels: V1 = Yangambi, V2 = Simalungun, V3 = 239. Observation parameters are increase in seedling height (cm), stem diameter (mm), number of leaf midribs (midrib), wet stover weight (g), number of roots (number) and root length (cm). Keywords: Growth Regulatory, Varieties, Oil Palm, Pre Nursery 

scholarly journals Respons awal pemberian biostimulan Orgamin pada kelapa sawit (Elaeis guineensis Jacq.) di Kebun Marjandi PTPN IV Early response of Orgamin biostimulan application in oil palm (Elaeis guineensis Jacq.) at PTPN IV Marjandi plantation

2016 ◽  
Vol 81 (1) ◽  
Author(s):  
Soekarno Mismana PUTRA ◽  
Djoko SANTOSO ◽  
Happy WIDIASTUTI ◽  
A. H. SARAGIH SARAGIH ◽  
M. A. GHONI GHONI ◽  
...  
Keyword(s):  
Oil Palm ◽  
Plant Growth Regulator ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Nutrient Content ◽  
Early Response ◽  
Inorganic Fertilizer ◽  
Nutrient Contents ◽  
Commercial Scale ◽  
Elaeis Guineensis Jacq

AbstractEffort to increase the production of oil palm can beconducted through application of plant growth regulator(PGR). Orgamin biostimulan is a natural PGR formulathat has been tested to improve the vegetative growths ofcorn and oil palm in the glass house. Assessment ofOrgamin and Orgamin plus (Orgamin + micro nutrient)applications at commercial scale was carried out inMarjandi oil palm plantation of PTPN IV usingrandomized block design with three treatments, i.e. K =100% recommended dose of inorganic fertilizer(control), O= Orgamin (1.5 kg/tree) + 50% dose ofinorganic fertilizer, OP = Orgamin plus (1.5 kg/tree)without inorganic fertilizer. The parameters ofobservation at 2.5 months after the treatments were soiland leaf nutrient contents (N, P, K, Mg), percentage offemale flower, mesocarp oil content, and harvested freshfruit bunches (FFB). The observation showed that therewas an increased in oil yield, weight of FFB and leafnutrient content, while the percentage of female flowerand nutrient content of soil were not significantlydifferent compared to the control.AbstrakUpaya untuk meningkatkan produksi kelapa sawitdapat dilakukan antara lain melalui pemberian zatpengatur tumbuh (ZPT). Biostimulan Orgamin merupa-kan formula ZPT alami yang telah diuji di rumah kacapada tanaman jagung dan bibit kelapa sawit. Uji cobaaplikasi Orgamin dan Orgamin plus (Orgamin yangdiperkaya hara mikro) pada skala lapang dilakukan dikebun kelapa sawit Marjandi PTPN IV denganmenggunakan Rancangan Acak Kelompok (RAK) untukmenguji tiga perlakuan, yaitu 1) K (kontrol) = 100%dosis anjuran pupuk kimia (APK = kontrol), 2) O = 50%dosis APK + Orgamin (1,5 kg/pohon), 3) OP = Orgaminplus (1,5 kg/pohon) tanpa pupuk kimia. Peubah yangdiamati pada 2,5 bulan setelah perlakuan adalah kan-dungan hara tanah dan daun (N, P, K, Mg), persentasebunga betina, rendemen minyak mesokarp, dan produksitandan buah segar (TBS). Hasil yang diperoleh menunjukkan terdapat peningkatan rendemen minyak, bobotTBS dan kandungan hara daun, sedangkan persentasebunga betina dan kandungan hara tanah tidak menunjuk-kan perbedaan yang nyata antara perlakuan dan kontrol.

scholarly journals Phenazine from Pseudomonas aeruginosa UPMP3 induced the host resistance in oil palm (Elaeis guineensis Jacq.)-Ganoderma boninense pathosystem

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Waheeda Parvin ◽  
Nisha Govender ◽  
Radziah Othman ◽  
Hawa Jaafar ◽  
Mahbubur Rahman ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Oil Palm ◽  
Biocontrol Agent ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Dry Weight ◽  
Post Inoculation ◽  
Fresh Weight ◽  
Plant Vigour ◽  
Basal Stem Rot

Abstract Pseudomonas aeruginosa developed its biocontrol agent property through the production of antifungal derivatives, with the phenazine among them. In this study, the applications of crude phenazine synthesized by Pseudomonas aeruginosa UPMP3 and hexaconazole were comparatively evaluated for their effectiveness to suppress basal stem rot infection in artificially G. boninense-challenged oil palm seedlings. A glasshouse experiment under the randomized completely block design was set with the following treatments: non-inoculated seedlings, G. boninense inoculated seedlings, G. boninense inoculated seedlings with 1 mg/ml phenazine application, G. boninense inoculated seedlings with 2 mg/ml phenazine application and G. boninense inoculated seedlings with 0.048 mg/ml hexaconazole application. Seedlings were screened for disease parameters and plant vigour traits (plant height, plant fresh weight, root fresh, and dry weight, stem diameter, and total chlorophyll) at 1-to-4 month post-inoculation (mpi). The application of 2 mg/ml phenazine significantly reduced disease severity (DS) at 44% in comparison to fungicide application (DS = 67%). Plant vigour improved from 1 to 4 mpi and the rate of disease reduction in seedlings with phenazine application (2 mg/ml) was twofold greater than hexaconazole. At 4, 6 and 8 wpi, an up-regulation of chitinase and β-1,3 glucanase genes in seedlings treated with phenazine suggests the involvement of induced resistance in G. boninense-oil palm pathosystem.

scholarly journals Pemanfaatan beberapa jenis urin ternak sebagai pupuk organik cair dengan konsentrasi yang berbeda pada tanaman kelapa sawit (Elaeis guineensis jacq.) di pembibitan utama

Kultivasi ◽  
2018 ◽  
Vol 17 (2) ◽  
Author(s):  
Bisri Alvi ◽  
Mira Ariyanti ◽  
Yudithia Maxiselly
Keyword(s):  
Oil Palm ◽  
Seed Quality ◽  
Elaeis Guineensis ◽  
Organic Liquid ◽  
Block Design ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Fertilizer Application ◽  
Good Effect ◽  
Liquid Fertilizer

Sari. Pembibitan merupakan tahapan awal dalam budidaya tanaman kelapa sawit, kualitas bibit akan mempengaruhi hasil yang akan diperoleh nantinya. Faktor yang mempengaruhi pertumbuhan bibit diantaranya adalah ketersediaan unsur hara yang dapat diperoleh dari pemberian pupuk anorganik dan organik. Pemberian pupuk anorganik tanpa diimbangi pupuk organik dapat merusak sifat tanah, sehingga diperlukan pupuk organik yaitu dengan memanfaatkan urin ternak sebagai pupuk organik cair, dengan menambahkan pupuk organik cair pada tanah, maka dapat membantu proses pertumbuhan tanaman karena pupuk organik cair urin ternak mengandung hormon pertumbuhan bagi tanaman serta mudah diserap tanaman. Penelitian dilakukan di Kebun Percobaan Ciparanje, Fakultas Pertanian, Universitas Padjadjaran, Kabupaten Sumedang, pada bulan September 2017 sampai bulan Februari 2018. Ordo tanah yang digunakan adalah Inceptisol. Tipe curah hujan menurut klasifikasi Schmidt dan Ferguson bertipe C dengan ketinggian tempat ±780 m dpl. Penelitian menggunakan rancangan acak kelompok (RAK) dengan 11 perlakuan yang diulang sebanyak 3 kali dengan jumlah tanaman di setiap plot 2 tanaman. Perlakuan terdiri dari pemberian urin sapi, kambing dan kelinci dengan konsentrasi 40 mL/L air, 120 mL/L air dan 200 mL/L air, serta perlakuan kontrol (tanpa perlakuan) dan pemberian pupuk urea 3,3 g/tanaman. Hasil penelitian menunjukkan bahwa pemanfaatan urin ternak memberikan pengaruh baik terhadap pertumbuhan tanaman, yang tercermin dari bobot kering tanaman. Perlakuan urin kambing konsentrasi 40 mL/L air dan 120 mL/L air cenderung berpengaruh baik terhadap bobot kering tajuk, bobot kering akar, dan nisbah tajuk akar bibit kelapa sawit.Kata Kunci: urin ternak, urin sapi, urin kambing, urin kelinci, kelapa sawit. Abstract. Seedling is an initial stage in the cultivation of oil palm, seed quality will affect the results that will be obtained later. Factor affecting the growth of seedlings of which the availability of nutrients which can be obtained from inorganic and organic fertilizer. Application of inorganic fertilizer without an organic fertilizer balanced can be damage the nature of the soil, necessitating organic fertilizer the urine of livestocks as organic liquid, adding organic liquid fertilizer to the soil, can help the plants to growth because organic liquid fertilizer of livestocks urine contain growth hormone for plants and easily absorbed to the plants. The research was conducted in Experimental Station of Ciparanje, Faculty of Agriculture, Padjadjaran University, Sumedang, from September 2017 to February 2018. Ordo of the soil used is Inceptisol. Precipitation type according to Schmidt and Ferguson's classification of type C with ± 780 meters above sea level altitude. Experiment was using a randomized block design (RBD) with 11 treatments with 3 replications and the number of plants in each plot of 2 plants. The treatment consists the urine of cows, goats and rabbits with some concentration of 40 mL/L of water, 120 mL/L of water  and 200 mL/L of water as well as a comparison treatment, control (untreated) and the provision of urea fertilizer 3,3 g/plant. The results showed that the utilization some kinds of cattle urine provides a good effect on plant growth, which is reflected from the dry weight of the plant. Treatment goat’s urine concentration 40 mL/L of water and 120 mL/L of water tends to affect on the dry weight shoot, dry weight root, and shoot root ratio on seedling oil palm.Keywords: livestock urine, cow’s urine, goat’s urine, rabbit’s urine, oil palm.

scholarly journals EFIKASI HERBISIDA ISOPROPILAMINA GLIFOSAT 240 g l-1 TERHADAP PERTUMBUHAN GULMA DI PERKEBUNAN KELAPA SAWIT (Elaeis guineensis Jacq) TANAMAN MENGHASILKAN

2021 ◽  
Vol 9 (02) ◽  
pp. 189
Author(s):  
Wasri Yaman
Keyword(s):  
Oil Palm ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Randomized Block Design ◽  
Significant Difference ◽  
Homogeneity Of Variance ◽  
Glyphosate Herbicide ◽  
Elaeis Guineensis Jacq ◽  
Plantation Crops ◽  
And Control

Oil palm (Elaeis guineensis Jacq.) Is one of the most widely cultivated plantation crops in Indonesia. The decrease in productivity of oil palm is caused by presence of weeds around the plant that can be controled. One of the most commonly used controls is the use of the isopropylamine glyphosate herbicide. This research aims to determine the dosage of the Isopropylamine glyphosate herbicide which is oil palm yields. Determining changes in weed composition after application of Isopropylamine glyphosate herbicide in oil palm yields. Determining whether phytotoxicity occurs in oil palm yields after application of the Isopropylamine glyphosate herbicide. This research was conducted in oil palm plantations owned by farmers in Jontor Kenangasari Village, Seputih Surabaya District, Central Lampung Regency and the Weed Laboratory of the Faculty of Agriculture, University of Lampung, Gedong Meneng, Bandar Lampung.  The research was conducted using a randomized block design (RBD) with 6 treatments and 4 replications, namely various doses of isopropylamine glyphosate (360, 600, 480, and 720 g ha-1), manual weeding, and control.  Homogeneity of variance was tested using the Bartlet test, additivity was tested by the Tukey test, and the mean difference was tested by the Least Significant Difference Test (LSD) at the 5% level. The results showed that: (1) The isopropylamine glyphosate herbicide dose of 480-720 g ha-1 is effective in controlling  total weeds, grasses weeds, Brachiaria mutica weeds and Mikania micrantha weeds up to 12 MSA and the herbicide dose of 600-720 g ha-1 is effective in controlling wide leaf weeds, and Cyrtococcum acrescens weeds up to 8 MSA, (2) The isopropylamine glyphosate herbicide 360- 720 g ha-1 causes changes in weed composition  at 4, 8, and 12 MSA, and (3) Application of the isopropylamine glyphosate herbicide 360 - 720 g ha-1 on plant plates did not cause poisoning to oil palm plants.

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