Respons Pemupukan N, P, K dan Mg Terhadap Kandungan Unsur Hara Tanah

ABSTRAK Penelitian dilaksanakan dengan tujuan untuk mengetahui kandungan unsur hara N, P, K, dan Mg dalam tanah dan jaringan daun tanaman kelapa sawit TBM sebelum dan setelah pemupukan. Penelitian dilakukan tahun 2014 selama satu tahun di Kebun Percobaan Sitiung, Kabupaten Darmasraya, Provinsi Sumatera Barat. Penelitian enggunakan Rancangan Acak Kelompok (RAK) dengan dua faktor yang di uji. Faktor pertama (A) adalah delapan varietas unggul kelapa sawit, yang tergolong Tanaman Belum Menghasilkan (TBM) umur dua tahun, yaitu DMP, DMK, PPKS-Dumpy, PPKS-LTC, PPKS (SMB), PPKS-540, Tania Selatana 1 (TS1) dan Tania Selatan 3 ( TS3). Faktor kedua (B) adalah dosis pupuk, yaitu 1) 500 g Urea, 200 g SP 36, 500 g KCl, 1000 g Kiserit, 2) 500 g Urea, 100 g SP36, 500 g KCl, 750 g Kiserit, 3) 1500 g Urea, 750 g SP36, 1375 g KCl, 1250 g Kiserit, 4) 500 g Urea, 200 g SP36, 500 g KCl, 1750 g Kiserit, 5) 250 g Urea, 100 g SP36, 250 KCl, 500 g Kiserit dan 6) 750 g Urea, 300 g SP36, 750 KCl, 1500 g Kiserit. Analisis kandungan unsur hara N, P, K, dan Mg menggunakan daun nomor sembilan dan tanah diambil pada kedalaman 30 cm secara komposit, masing-masing sebanyak 32 contoh daun dan tanah sebelum pemupukan dan 24 contoh daun dan tanah setelah pemupukan. Hasil penelitian menunjukkan bahwa sebelum pemupukan kandungan unsur hara N dan P pada lahan penelitian dalam taraf defisiensi, K pada taraf defisiensi hingga optimum, dan Mg pada taraf optimum. Setelah pemupukan, kandungan unsur hara N pada sebagian besar lahan masih tetap defisiensi. Kalium pada sebagian besar lahan dan Mg pada semua lahan penelitian pada taraf optimum. Sebelum pemupukan, kandungan unsur hara K dalam jaringan daun delapan varietas kelapa sawit dalam taraf defisiensi, P pada taraf defisiensi hingga berlebihan dan Mg pada taraf optimum. Setelah pemupukan, kandungan unsur hara N pada sebagian besar varietas masih pada taraf defisiensi, P pada sebagian besar varietas berlebihan serta K dan Mg pada semua varietas pada taraf optimum. Hasil penelitian ini mengindikasikan bahwa respons tanaman kelapa sawit terhadap pemupukan berbeda menurut varietas. Tingkat kemasaman (pH) tanah tergolong sangat rendah atau tanah bersifat sangat masam, sehingga dilakukan pengapuran menggunakan dolomit sebelum pemupukan. Setelah pengapuran terjadi peningkatan pH tanah, tetapi masih tergolong rendah, atau tanah masih bersifat sangat masam. Oleh karena itu, pengapuran perlu dilakukan di lokasi penelitian.Kata kunci : Status hara, kelapa sawit, analisa tanah, analisa daun, defisiensi hara. Response of N, P, K and Mg Fertilization to Nutrients Contents in Soil and Leaf Young Oil Palm ABSTRACT The research was conducted in order to determine the nutrients content of N, P, K, and Mg in the soil and leaf tissue of young oil palm. The study was conducted in 2014 for one year at the Sitiung Experimental Garden, Darmasraya regency, West Sumatra Province. The study was using a randomized block design with two factors. The first factor (A) were eight superior varieties with age two years-old, namely DMP, DMK, PPKS-Dumpy, PPKS-LTC, PPKS-SMB, PPKS-540, TS1 and TS3. The second factor is fertilizer dosages 1) 500 g Urea, 200 g SP 36, 500 g KCl, 1000 g Kiserit, 2) 500 g Urea, 100 g SP36, 500 g KCl, 750 g Kiserit, 3) 1500 g Urea, 750 g SP36, 1375 g KCl, 1250 g Kiserit, 4) 500 g Urea, 200 g SP36, 500 g KCl, 1750 g Kiserit, 5) 250 g Urea, 100 g SP36, 250 KCl, 500 g Kiserit dan 6) 750 g Urea, 300 g SP36, 750 KCl, 1500 g Kiserit. For the analysis of the nutrient content of N, P, K and Mg, leaf samples were taken on leaf number nine and soil samples were taken at a depth of 30 cm in the composite method, 32 leaf and soil samples before fertilization and 24 leaf samples soil. The results showed that before fertilization the nutrient content of N and P in the soil in deficiency level, K on the deficiency to optimum levels, and Mg at an optimum level. After fertilization, the nutrient content of N in the almost all of the area is still deficient. Potassium at most area and Mg in all area of research at the optimum level. Before fertilization, the nutrient content of K in the leaf tissue of eight varieties of oil palm in the deficiency level, P deficiency to excessive level and Mg at the optimum level. After fertilization, the nutrient content of N in most varieties are still at the level of deficiency, P on most varieties in the excessive level as well as, K and Mg in all varieties at optimum level. Results of this study indicated that the response of oil palm to fertilization differs according to varieties. The level of soil acidity (pH) is very low or the soil is very acidic, therefore liming using dolomite were done before fertilization. After liming increased soil pH, but is still relatively low, or the soil is still very acidic. Therefore, liming in the area need to be done again.Keywords : Nutrien status, oil palm, soil analysis, leaf analysis, nutrient content.

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Interaction Between Oryctes Rhinoceros and Leaves’ Nutrient Content in Oil Palm

JOURNAL OF ADVANCES IN AGRICULTURE ◽

10.24297/jaa.v8i1.7585 ◽

2018 ◽

Vol 8 ◽

pp. 1408-1414

Author(s):

Mohd Rasdi Zaini ◽

Nurul Farahana Hazira Hazlee ◽

Fathul Nabila Abdul Karim

Keyword(s):

Oil Palm ◽

Negative Relationship ◽

Nutrient Status ◽

Nutrient Content ◽

Oryctes Rhinoceros ◽

Leaf Analysis ◽

Palm Trees ◽

Strong Positive Relationship ◽

Nutrients Uptake ◽

The Relationship

A study meant to evaluate the relationship between the presence of Oryctes rhinoceros to the oil palm in relation to the leaves’ nutrient content which is Phosphorus (P) and Potassium (K). Appropriate fertilization is one of the methods that can help to suppress the pests’ presence in the field. In general, insects’ pests are attracted to the plants that are supplied with excess supply of nutrient as it can help them to develop better in future as these nutrient play their roles in aiding through growths and insects’ fecundity. Data on nutrient status were collected were Phosphorus (P), Potassium (K), Calcium (Ca), Magnesium (Mg), Copper (Cu) and Zinc (Zn). These data had been collected twice per month which were at the middle and at the end of each month. Four samples of leaves were taken from four sampling oil palm trees of each treatment. Leaves from ninth or seventeenth fronds were chosen as it is the best most ideal fronds to be used for leaf analysis to identify the nutrient content. The result of this study showed that Phosphorus (P) exerted a strong positive relationship with the presence of Oryctes rhinoceros in the oil palm while Potassium (K) showed a strong negative relationship between the two variables. Thus, developing awareness to the growers to this nutrients-balancing issue would be good for future agriculture in future as it is clear now that balanced nutrition is primordial to ensure availability of nutrients uptake by plants.

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The contents availability of N, P, K, and Mg in empty fruit composting of oil palms with symbiont bacteria from rhinoceros beetle larvae (Oryctes rhinoceros) (Coleoptera: Scarabidae)

Food Research ◽

10.26656/fr.2017.5(s4).014 ◽

2021 ◽

Vol 5 (S4) ◽

pp. 62-66

Author(s):

F.S.D. Sitanggang ◽

Marheni ◽

J. Ginting

Keyword(s):

Oil Palm ◽

Bacterial Culture ◽

Block Design ◽

Nutrient Content ◽

Oryctes Rhinoceros ◽

Empty Fruit Bunches ◽

Rhinoceros Beetle ◽

Randomized Block Design ◽

High K ◽

Reproductive Activities

The using of palm oil waste had not been optimal lately. It could be seen in oil empty fruit bunches (EFB). It was placed along the oil palm plantations. The condition was not only the trigger of air pollution but also could invite rhinoceros beetle pests (Oryctes rhinoceros) to lay their eggs and carry out reproductive activities due to availability organic matter of the trees. Oil palm plants required large amounts of macro nutrients, especially potassium. However, the potassium nutrient was found in EFB was too slow available because of its relatively long breakdown. That was the reason why it was needed a method of using EFB waste into a capable of high use value product, environmentally friendly, and could give a lot of benefits to oil palm farmers. The purpose of this study was to determine the availability of nutrient content in EFB composting by the using of symbiont bacteria from larvae O. rhinoceros. The research was experimentally conducted a factorial randomized block design (RBD) with 2 factors, namely the type of bacteria and the time of decomposition. The composting stage was carried out by coarsely chopping the EFB then 75 ml of bacterial culture was applied to 1 kg of EFB. Analysis, results indicated C/N ratio (35.56% and 36.97%) and high K content (1.64% and 1.48%). The EFB composting method is achievable in 6 weeks with activators of Bacillus stratosphericus and Bacillus siamensis.

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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

E-Journal Menara Perkebunan ◽

10.22302/iribb.jur.mp.v81i1.51 ◽

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.

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Lowbush Blueberry Response to Phosphorus-containing Fertilizers: Assessment by Leaf Phosphorus Concentration and Content

HortScience ◽

10.21273/hortsci.32.3.537d ◽

1997 ◽

Vol 32 (3) ◽

pp. 537D-537

Author(s):

J.M. Smagula ◽

S. Dunham

Keyword(s):

Block Design ◽

Leaf Tissue ◽

Dry Weight ◽

Nutrient Concentrations ◽

Phosphorus Concentration ◽

P Deficiency ◽

Lowbush Blueberry ◽

Phosphorus Containing ◽

Leaf N Concentration ◽

Leaf P

Lowbush blueberries (Vaccinium angustifolium Ait.) in three commercial fields were treated with 67.2 kg P/ha from triple super phosphate(TSP), monoammonium phosphate (MAP), or diammonium phosphate (DAP), and compared to a control in a randomized complete block design with 12 blocks. Correction of P deficiency by fertilizers with different ratios of P to N was assessed by leaf and stem nutrient concentrations and contents (concentration × weight). Samples of stems collected in July from three 0.03 m2 quadrates per treatment plot indicated MAP and DAP had no effect on dry weight of stem tissue, but increased average dry weight of leaf tissue. Leaf nutrient concentrations and contents showed similar results; P and N were raised to higher levels by MAP and DAP than by TSP. TSP had no effect on leaf N concentration or content but raised leaf P concentration but not content, compared to controls.

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Identifikasi Cendawan Mikoriza arbuskular (CMA) pada Beberapa Tekstur

Buletin Palma ◽

10.21082/bp.v16n2.2015.203-210 ◽

2016 ◽

Vol 16 (2) ◽

pp. 203

Author(s):

ENGELBERT MANAROINSONG ◽

A. A. LOLONG

Keyword(s):

Soil Texture ◽

Oil Palm ◽

Soil Microorganisms ◽

Peat Soil ◽

Arbuscular Mycorrhizal ◽

Soil Samples ◽

Font Size ◽

Central Kalimantan ◽

Purposive Sampling ◽

Palm Trees

ABSTRAK Tanaman kelapa sawit ditanam hampir pada semua jenis tanah seperti gambut, liat berlempung dan lempung berpasir dengan proporsi kandungan tiap tekstur tanah berbeda-beda dilapangan. Cendawan mikoriza arbuskular (CMA) merupakan mikroorganisme tanah yang berperan sebagai mikroba perombak, membantu tanaman dalam penyerapan unsur hara dari tanah. Penelitian ini bertujuan mengidentifikasi jenis dan populasi spora mikoriza pada beberapa tekstur tanah dipertanaman kelapa sawit. Penelitian dilakukan pada 3 (tiga) lokasi perkebunan kelapa sawit di Kabupaten Sampit, Kalimantan Tengah, yaitu di lahan PT. Sapta Karya Damai (SKD), PT. Agro Bukit dan areal pertanaman kelapa dan kelapa sawit milik petani di Samuda besar. Penelitian dilaksanakan pada bulan Maret sampai dengan Juni 2015. Pengambilan contoh tanah dilakukan secara Purposive Sampling. Analisis contoh tanah dilakukan di Laboratorium Pengujian Balittro - Bogor. Parameter yang diamati, yaitu pH, kelembaban tanah, jenis dan jumlah populasi spora mikoriza. Hasil penelitian menunjukan bahwa mikoriza yang ditemukan adalah dari jenis Glomus dengan populasi bervariasi menurut jenis tanah, yaitu berkisar antara 175,3 - 283 buah per 100 mg tanah. Populasi tertinggi, yaitu 283 spora per 100 mg tanah ditemukan pada jenis tanah gambut di perkebunan kelapa sawit PT. Agro Bukit yang belum berproduksi (umur <5 tahun). Populasi terendah, yaitu 175,3 spora per 100 mg tanah ditemukan pada tektur tanah liat berlempung di lokasi perkebunan kelapa sawit PT. Agro Bukit yang telah berproduksi normal (umur >10 tahun).Kata kunci : Cendawan, mikoriza, tekstur, tanah, kelapa sawit. Identification of The Fungie Micorhyza Asbuscular on Saveral Soil Textures at Oilpalm Plantation, Central Kalimantan ABSTRACT Oil palm trees planted in virtually all types of soil such as peat, clay and sandy clay with argillaceous proportion of the content of each soil texture is different in the field. Arbuscular mycorrhizal fungie (FAM) is a soil microorganisms that act as microbial crusher, helps plants to absorb nutrients from the soil. This study aims to identify the types and populations of mycorrhizal spores in soil texture on oilpalm plantation. The study was conducted at three (3) locations oil palm plantations in the district of Sampit, Central Kalimantan, namely in te area of PT. Sapta Karya Damai (SKD), PT. Agro Bukit and coconut plantations and oil palm farmers in Samuda Besar. The experiment was conducted in March and June 2015. Soil sampling is purposive sampling. Analysis of soil samples carried out in the Laboratory Testing Balittro - Bogor. The parameters observed were pH, soil moisture, type and number of mycorrhizal spores population. The results showed that mycorrhizae are found are of the type Glomus with a population varies according to the type of soil ranged between 175.3 to 283 pieces per 100 mg of soil. The highest population, namely 283 spores per 100 mg of soil found in the peat soil types in PT. Agro Bukit oil palm plantations wihich is not yet in production (<5 years). Lowest population is 175.3 per 100 mg of spores found in soil texture argillaceous clay in PT. Agro Bukit oil palm plantations who have production (>10 years).Keywords : Fungi, michorrizal,textur, soil, oil palm.

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Pengaruh Media Tumbuh Biochar Sekam Padi Terhadap Pertumbuhan Bibit Kelapa Sawit

Buletin Palma ◽

10.21082/bp.v16n2.2015.195-202 ◽

2016 ◽

Vol 16 (2) ◽

pp. 195

Author(s):

BASRI A B ◽

. CHAIRUNNAS ◽

ABDUL AZIS

Keyword(s):

Rice Husk ◽

Oil Palm ◽

Organic Material ◽

Block Design ◽

Growth Media ◽

Font Size ◽

Black Line ◽

Randomized Block Design ◽

Growing Medium ◽

Rice Husk Biochar

ABSTRAK Bibit kelapa sawit yang baik salah satunya ditentukan oleh media tumbuh. Penggunaan kompos ataupun pupuk kandang sering berhasil memperbaiki produktivitas tanah dan mensuplai unsur hara ke tanaman. Namun, keuntungan pembenah tanah seperti ini bersifat jangka pendek, terutama di daerah tropis, karena dekomposisi bahan organik yang diberikan berlangsung cepat dan biasanya mengalami mineralisasi menjadi CO2. Karbon hitam (C), yang disebut sebagai biochar dapat mengatasi beberapa keterbatasan suplai bahan organik. Penelitian ini bertujuan untuk mendapatkan komposisi media tumbuh biochar yang sesuai untuk pertumbuhan bibit kelapa sawit. Penelitian menggunakan Rancangan Acak Kelompok dengan 10 perlakuan dan tiga ulangan. Perlakuan yang diuji adalah (1) Topsoil 100%, (2) Biochar sekam padi 100%, (3) Topsoil 50% + biochar sekam padi 50%, (4) Topsoil 50% + kompos 50%, (5) Topsoil 66,6% + biochar sekam padi 33,4%, (6) Topsoil 66,6% + kompos 33,4%, (7) Topsoil 33,3% + biochar sekam padi 33,3% + kompos 33,4%, (8) Topsoil 50% + biochar sekam padi 25% + kompos 25%, (9) Topsoil 40% + biochar sekam padi 40% + kompos 20%, (10) Topsoil 25%+ biochar sekam padi 50% + kompos 25%. Hasil penelitian menunjukkan bahwa pertumbuhan bibit kelapa sawit yang terbaik diperoleh pada media tumbuh campuran topsoil 40%+ biochar sekam padi 40% + kompos 20%.Kata kunci : Pembibitan kelapa sawit, biochar sekam padi, media tumbuh. <span style="color: black; line-height: 115%; letter-spacing: -0.35pt; font-family: 'Arial Bold'; font-size: 14pt; mso-bidi-font-family: 'Arial Bold'; mso-font-width: 95%; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: IN; mso-fareast-language: IN; mso-bidi-language: AR-SA;">The Effect of Biochar Medium on Oil Palm Seedling Growth ABSTRACT Good oil palm seedlings among otyher thing determined by the growing medium. The use of compost or manure often managed to improve productivity, supply nutrient to the palm. But the advantage of using compost or manure to improve soil fertility are share term, especially in the tropic, because decomposition of organic material and usually under go CO2. Black carbon is called biochar can over come some of the limititations of the supply of organic. The research aims to obtain the composition of biochar growth media which suitable for growing of oil palm seedlings. The research was designed by using Randomized Block Design with 10 growth media treatments and 3 replications. The treatments were tested consist of (1) Topsoil 100%, (2) Rice husk biochar 100%, (3) Topsoil 50% + rice husk biochar 50%, (4) Topsoil 50% + compost 50%, (5) Topsoil 66,6% + rice husk biochar 33,4%, (6) Topsoil 66,6% + compost33,4%, (7) Topsoil 33,3% + rice husk biochar 33,3% + compost33,4%, (8) Topsoil 50% + rice husk biochar 25% + compost 25%, (9) Topsoil 40% + rice husk biochar 40% + compost 20%, (10) Topsoil 25% + rice husk biochar 50% + compost 25%. Result indicated that the best growth of oil palm seedlings was obtained on media topsoil 40% + rice husk biochar 40% + compost 20%.Keywords: Oil palm nursery, rice husk biochar, growth media.

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Lowbush Blueberry Response to Different Phosphorus/Nitrogen Ratios

HortScience ◽

10.21273/hortsci.33.3.529d ◽

1998 ◽

Vol 33 (3) ◽

pp. 529d-529

Author(s):

J.M. Smagula ◽

W. Litten ◽

S. Dunham

Keyword(s):

Block Design ◽

Leaf Tissue ◽

Dry Weight ◽

Stem Length ◽

Nutrient Concentrations ◽

Flower Bud ◽

P Deficiency ◽

Lowbush Blueberry ◽

Triple Super Phosphate ◽

Leaf P

Lowbush blueberries (Vaccinium angustifolium Ait.) in three commercial fields were treated with 67.2 kg P/ha from triple super phosphate (TSP), monoammonium phosphate (MAP), or diammonium phosphate (DAP) and compared to a control in a randomized complete-block design with 12 blocks. Correction of P deficiency by fertilizers with different ratios of P to N was assessed by leaf nutrient concentrations. Samples of stems collected in July from three 0.03-m2 quadrats per treatment plot indicated MAP and DAP had no effect on dry weight of stem tissue, but increased average dry weight of leaf tissue. P and N Leaf concentrations were raised to higher levels by MAP and DAP than by TSP. TSP had no effect on leaf N concentrations but raised leaf P concentrations compared to controls. Stem length, flower buds per stem and flower bud density were increased by both MAP and DAP, but not TSP. MAP and DAP increased fruit yield by about 340 kg/ha compared to the control.

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Response on Growth of Oil Palm Seedling (Main Nursery) by Adding Several Amandement, Fertilizer and Sulphate Reduction Bacteria on Acid Sulphate Soils

Jurnal Pertanian Tropik ◽

10.32734/jpt.v5i3.3062 ◽

1970 ◽

Vol 5 (3) ◽

pp. 344-354

Author(s):

Perdana Abdi ◽

Asmarlaili Sahar Hanafiah ◽

Hamidah Hanum

Keyword(s):

Oil Palm ◽

Agricultural Land ◽

Block Design ◽

Nutrient Content ◽

Sulphate Reduction ◽

Acid Sulphate Soil ◽

Acid Sulphate ◽

Empty Fruit Bunches ◽

Acid Sulphate Soils ◽

Randomized Block Design

Acid sulphate soil has potential to be good agricultural land if the condition meets. Therefore This research was conduct to learn the effect of several amendment, fertilizer and sulphate reduction bacteria (SRB) on the growth of oil palm seedlings and increasing nutrient content of oil plam seedlings.This research did on april 2017 until desember 2017, and used acid sulphate soil from Unit Payarambe PT. Mopoli Raya Aceh Tamiang Indonesia, and used oil palm seedling (3 month old). This research used Randomized Block Design with 3 treatments : Several amandment (without amandement, empty fruit bunches oil palm 30 tonnes/ha, Dolomie 15,8 tonnes/ha), fertilizers (without fertilizer, given fertilizer 2,5grams/seedling), and sulphate reduction bacteria (without SRB and given SRB 15 ml with total population 108/cc) with 6 replication. The results showed that the application empty fruit bunches oil palm compost 30 tonnes/ha increased plant height and stem statiscally significant after 28 weeks application. The best treatment was empty fruit bunches oil palm compost 30 tonnes/ha combined with inoculum of sulphate reduction bacteria.

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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

E-Journal Menara Perkebunan ◽

10.22302/ppbbi.jur.mp.v81i1.51 ◽

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

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Soil response to chemicals used in a field experiment

International Agrophysics ◽

10.2478/v10247-012-0080-0 ◽

2013 ◽

Vol 27 (2) ◽

pp. 151-158 ◽

Cited By ~ 6

Author(s):

S. Jezierska-Tys ◽

A. Rutkowska

Keyword(s):

Alkaline Phosphatase ◽

Enzymatic Activity ◽

Field Experiment ◽

Soil Microorganisms ◽

Block Design ◽

Soil Samples ◽

Alkaline Phosphatases ◽

Soil Response ◽

Negative Effect ◽

Set Up

Abstract The effect of chemicals (Reglone 200 SL and Elastiq 550 EC) on soil microorganisms and their enzymatic activity was estimated. The study was conducted in a field experiment which was set up in the split-block design and comprised three treatments. Soil samples were taken six times, twice in each year of study. The results showed that the application of chemicals generally had no negative effect on the number of soil microorganisms. The application of Reglone 200 SL caused an increase of proteolytic and ureolytic activity and affected the activity of dehydrogenases, acid and alkaline phosphatases in the soil. The soil subjected of Elastiq 550 EC was characterized by lower activity of dehydrogenases, protease, urease and alkaline phosphatase.

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