scholarly journals POTENSI BAKTERI PELARUT FOSFAT DAN DIAZOTROF DARI RHIZOSFER KELAPA SAWIT TANAH GAMBUT SAPRIK TERHADAP PERTUMBUHAN BIBIT KELAPA SAWIT

2020 ◽  
Vol 10 (2) ◽  
pp. 76
Author(s):  
Ida Nur Istina ◽  
Happy Widiastuti ◽  
Heri Widianto

Utilization of biological fertilizer has the potential to reduce inorganic fertilizer application in oil palm cultivation. The aims of this research to obtain the potential of phosphate (P) solubilizing and diazotrophic bacteria from oil palm rhizosphere towards palm oil seedling growth. This research has been done on Sapric peat soil at Pelalawan Regency, Riau Province from June to November 2014, using a factorial randomized block design (3x5 with 3 replications). The first factor were the potential bacteria isolates (Io = without isolates; I1 = Isolate T5.1 + T7. I2 = Isolate T9.1 + T5); the second factor were NPK fertilizer dosage (p1-100%; p2 = 85%; p3 = 70% fertilizer and p4 = 55% recommended fertilizer). The results showed that sapric peat soil was a potential source of P solubilizing bacteria with the ability to solubilized of P up to 329.94 ppm, and diazotrophic bacteria with the ability of N-fixation up to 0.0293 mmol/L/ hr.  Application of 70% N and P fertilizers and i2 isolate provides the best vegetative growth performance of oil palm seedlings and reduces 30% of inorganic fertilizers application.

2020 ◽  
Vol 8 (07) ◽  
pp. 296-303
Author(s):  
Rosmadelina Purba ◽  
Jonner Purba ◽  
Furqon Harkesa Damanik

The purpose of this research was to discover the effect of solid and NPK fertilizer, as well as the interaction of solid and NPK fertilizer on the growth and production of green eggplant. This research used a factorial randomized block design with two treatment factors, namely the first factor: Administrationof oil palm solid which consisted of 4 levels of treatment, namely: S0 = No palm oilwaste solid; S1 = Administration of palm oil waste solid at 0.5 kg/m2; S2 = Administration of palm oil waste solid at 1 kg/m2; S3 = Administration of palm oil waste solid at 1.5 kg/m2. The second factor is the addition of NPK fertilizer per plant (J) consisting of 3 levels of treatment, namely: J0 = 0 g/plant; J1 = 5 g/plant; J2 = 10 g/plant. The results showed that solid treatment significantly affected the plants height at ages 2, 4, and 6 MST, flowering age, production per plant, and production per plot. The treatment of Solid S3 produced the highest plants aged 2, 4, and 6 MST, respectively (21.78 cm), (53.45 cm), and (77.78 cm), the fastest flowering age (32.89 days), highest production per plant (1748.77 g), and highest production per plot (21.89 kg). The NPK treatment significantly affected the plants height at ages 4 and 6 WAP, flowering age, production per plant, and production per plot. The NPK J2 fertilizer dosage treatment produced the highest plants aged 4 and 6 WAP, respectively (47.83 cm), and (75.84 cm), the fastest flowering age (32.91 days), the highest production per plant (1562.91 g), and the highest production per plot (19.86 kg). The interaction treatment of the NPK fertilizer and solid administration did not significantly affect all parameters. The combination of S3J2 produced the highest plants aged 2 and 6 WAP, respectively (22.33 cm) and (79.67 cm), the fastest flowering age (32.33 days), the highest production per plant (1816.67 g), the and highest production per plot (22.49 kg).  


2019 ◽  
Vol 1 (2) ◽  
pp. 113-122
Author(s):  
Heru Kurniawan ◽  
Asmah Indrawati ◽  
Gusmeizal Gusmeizal

Okra plant is becoming to be one of favortite vegetable in Indonesia since then the deman of this plant is growing very rapidly. The aim of this research is to Utilize Palm Oil Liquid Organic Fertilizer and M-Bio Biofertilizer Against Growth and Production in Okra Plants (Abelmoschusesculentus  L.  Moench).  This  study  used  a  Randomized  Block  Design (RBD) with 2 replications. Factorial consisting of II treatment factors, Factor I treatment given P0: Without Liquid Palm Oil Organic Fertilizer, P1: Provision of PKS liquid fertilizer and Factor II, treatment of giving M-Bio. Parameters observed in this study were  vegetative dan generative. The results showed that the treatment of oil palm liquid organic fertilizer had no significant effect on vegetative and generative observed parameters. The treatment of M-Bio biofertilizer significantly affected the vegetative and generative observation parameters where the best dose was treatment  6%. The treatment of the combination of liquid organic fertilizer from palm oil waste and M-Bio biological fertilizer has no significant effect on all parameters of vegetative and generative observations.


Author(s):  
I Nyoman Merit ◽  
I Wayan Narka ◽  
Tatiek Kusmawati

Research on the effect of dosage combination of Evagrow bio-fertilizer and chemical fertilizers on soil properties, growth and yield of rice has been carried out in the glasshouse, Faculty of Agriculture, Udayana University using factorial experiment with a Randomized Block Design (RBD). The first factor is Evagrow bio-fertilizer in 3 level, i.e. E0 (without bio-fertilizers), E1 (5 g bio-fertilizer/L) E2 (10 grams bio-fertilizer/L). The second factor is chemical fertilizer, which consists of 3 levels: K0 (without chemical fertilizers), K1 (150 kg Urea/ha + 75 kg SP36/ha + 37.5 kg KCl/ha), K2 (300 kg Urea/ha + 150 kg SP36/ha + 75 kg KCl/ha). The results showed that chemical fertilizers give a significant and very significant effect on most of the rice growth and yield parameters. The application of chemical fertilizers K1 and K2 increased yield of dry grain harvest to 52.87% and 102.54% compared to controls.  Application of Evagrow bio-fertilizer did not significantly increase growth and yield of rice. There is no interaction between chemical fertilizers and Evagrow bio- fertilizer.  Similarly to some of the soil characteristics, biological fertilizer and chemical fertilizer application did not show significant effect on most of the soil characteristics, except on salt levels.Keywords: Evagrow Biofertilizer, Inorganic Fertilizer, Oryza Sativa


2019 ◽  
Vol 8 (2) ◽  
pp. 173-180
Author(s):  
Jumakir Jumakir ◽  
Endrizal Endrizal

Jumakir J, Endrizal E. 2019. Response of biological fertilizer addition to growth and results of rice field. Jurnal Lahan Suboptimal: Journal of Suboptimal Lands. 8(2):173-180. The research objectives were to determine the effect or response of the addition of biological fertilizers to the growth and yield of rice, to determine the most effective type of biological fertilizer. This study was conducted in irrigated rice field of Sri Agung Village, Batang Asam sub District, West Tanjung Jabung District, Jambi Province in dry season 2016. The design was Randomized Block Design (RBD) with six treatments and three replications with 5 mx 10 m plot area, implemented in a farmer area of 1200 m2. The results of the analysis based on the analysis of variance showed significant and unreal differences in growth and yield of rice. The addition of biological fertilizer provided higher growth and yields than without biological fertilizer. Provibio biofertilizer is the most effective biofertilizer that can provide the highest rice yield and the use of biofertilizer can save 50% recommended NPK fertilizer.


2021 ◽  
Vol 911 (1) ◽  
pp. 012041
Author(s):  
A Harsono ◽  
D Sucahyono ◽  
E Pratiwi ◽  
A Sarjia ◽  
H Pratiwi ◽  
...  

Abstract The potentcy of acidic soils for soybean development in Indonesia is quite large. However low of soil fertility and microorganisms population become contrains for achieving high productifity of soybean. The aim of this research is to determine the effectiveness of technology packages for 15 biofertilizers formula to increase soybean productivity in acidic soils. The research was conducted during the end of rainy season in South Kalimantan. The soil use in the study had pH 5.2 and soil Al-saturation 34.2%. The reasearch was arranged in a randomized block design, three replications consisted of 20 treatmens, namely: 1) 0 NPK, 2) 50% NPK, 3) 50% NPK +2 t/ha organic fertilizer 4) 70% NPK, 5) 100% NPK (100 kg urea + 100 kg SP36 + 100 kg KCl/ha), 6) Iletrisoy+ Biovam+Starmix, 7) Iletrosoy Plus, 8) Beyonic, 9 Biotrico, 10) Probio New, 11) RhizoBIOST, 12) Bio-SRF, 13) Biopim, 14) BioMIGE, 15) Biocoat, 16) FajarSOYA, 17) Rhizobion, 18) Agrizone, 19) Rhizoplus, and 20) BISRF. For each biological fertilizer, 50-75% of recommended NPK fertilizers were given at 15 days after planting. The results indicated that combination of Biovam + Iletrisoy + Startmix biofertilizers, Iletrisoy plus, Biotricho, Probio New, Bio Mige, and Fajar SOYA were effective for increasing soybean productivity on acidic soils. These biological fertilizers + 50% recommended NPK + 1.5 t/ha organic fertilizer increases pods number, and soybean productivity more than 10% compared to the recommended NPK fertilizer dosage whic was 1.81 t/ha. Several of these biological fertilizers have good prospects to be developed as bio-fertilizers for soybeans in acidic soils.


2020 ◽  
Vol 8 (4) ◽  
pp. 121
Author(s):  
USMAN DARAS

<p>Penelitian ini dilakukan untuk mengetahui pengaruh dosis dan komposisi pupuk NPK terhadap petumbuhan tanaman jambu mente muda (TBM) yang ditanam pada tanah regosol coklal keabu-abuan di Desa Anyar - Bayan (Lombok Barat) dari tahun 1997 sampai 2000. Perlakuan pupuk yang diuji adalah: (1) Taraf pemberian pupuk: 0, 150, 300, 450, 600 dan 750 g NPK/pohon/tahun; dan (2) Komposisi pupuk NPK (2:1:1, 1:1:1, dan 1:1:2). Perlakuan pupuk disusun dalam rancangan acak kelompok dengan 2 ulangan dan ukuran petak 4 pohon. Hasil penelitian menunjukkan tidak ada pengaruh intcraksi nyata antara perlakuan dosis dan komposisi pupuk NPK terhadap petumbuhan tanaman jambu mente muda. Sedangkan faktor tunggalnya, dosis maupun komposisi pupuk, berpengaruh nyata terhadap petumbuhan tanaman. Dosis pupuk yang memadai untuk mendukung petumbuhan tanaman secara normal menurut stadia (umur) adalah 100, 200, 400 dan 600 g NPK (dalam N, P20, dan KjO) per pohon per tahun, masing-masing unluk 1, 2, 3 dan 4 tahun. Sedangkan komposisi pupuk NPK yang dianjurkan adalah NPK 1:1:2 untuk tanaman umur 1 -2 tahun, dan NPK 2:1:1 tanaman umur 3 - 4 tahun.</p><p>Kata kunci: Anacardium occidentale, jambu mente, pupuk</p><p> </p><p><strong>ABSTRACT </strong></p><p><strong>Effect of fertilizer application on the growth of young cashew plants in Bayan, Lombok</strong></p><p>This study was conducted on young cashew trees grown in grayish- brown regosol soil located in Anyar Bayan (West Lombok) rom 1997 to 2000. The objective of this study was to find out the effect of NPK fertilizer and its composition on Uie growlh of me crops. The treatments were: (1) fetilizer rates (0, 150, 300, 450, 600 and 750 g NPK /tree/year); and (2) composition of NPK (2:1:1, 1:1:1 and 1:1:2). The treatments were arranged in randomized block design with 2 replicates, 4 plants per plot. Results showed that there was no significant interaction between fertilizer rate and its composition on the growth of the plants. Individually, however, both fertilizer rate and NPK composition significantly affected growlh of young cashew trees. Adequate rates of fertilizer application were 100, 200, 400 and 600 g NPK (in N, P2Oj dan KjO) per tree per year for 1, 2, 3 and 4 years old, respectively. Whereas, fetilizer compositions of NPK 1:1:2 and NPK 2:1:1 were suitable for young trees of 1-2 and 3-4 years old, respectively.</p><p>Keywords: Anacardium occidentale. cashew, fertilizer, application, plant growth, Lombok</p>


SoilREns ◽  
2017 ◽  
Vol 14 (2) ◽  
Author(s):  
Betty Natalie Fitriatin ◽  
Aristyo Rahardiyan ◽  
Tien Turmuktini

Marginal soils have problems of low availability of nutrients, especially phosphorus. Phosphate solubilizing microbes can produce organic acid that dissolve P in the soil. Futhermore, the PSM also produce extracellular enzymes asa phosphatase that catalyze mineralization of organic P become inorganic P. Phosphate solubilizing bacteria (Pseudomonas mallei and Pseudomonas cepacea) and phosphate solubilizing fungi (Penicillium sp. and Aspergillus sp) is selected based on the ability of dissolving P and the production of growth regulators. Research at this stage aims to determine the biological fertilizer application techniques (PSB and PSF) as well as different types of P fertilizers to improve soil P available, growth and yield of maize. Field experiment on Ultisol Jatinangor implemented using a randomized block design (RBD) to test how applications PSM plus (giving 1, 2 and 3 applications) as well as the type of fertilizer P (SP-36 and rock phosphate). The results showed that the application of PSM can improve soil P-available growth and yield of maize. Application of PSM biological fertilizer could reduce the need for fertilizer P by 50%. PSM application once the application (early planting) with SP-36 dose 50% can increase content of soil P (P-available), and yield of maize on Ultisols.Keywords : maize, phosphate solubilizing microbes, Ultisols


2021 ◽  
Vol 20 (2) ◽  
pp. 110
Author(s):  
Kus Hendarto ◽  
Setyo Widagdo ◽  
Sri Ramadiana ◽  
Fitria Sita Meliana

Shallots (Allium ascalonicum L.) is one of the leading vegetable commodities used as food seasoning and traditional medicine. This study aims to see the effect of providing various doses of NPK fertilizer and types of biological fertilizers on the growth and production of shallot plants. This study used a randomized block design (RAK) arranged in a factorial (4 x 2). The first factor is the NPK fertilizer dosage which consists of four levels, namely: N0= 0% (without NPK fertilizer), N1= 50% (25 g/m2), N2= 100% (50 g/m2), and N3= 150% (75 g/m2). The second factor is the type of biological fertilizer which consists of two levels, namely: H1= Grikulan plus fertilizer and H2= EM4. The results showed that the NPK fertilizer dosage treatment up to a dose of 75g/m2 gave the best results on plant growth and development, including the number of leaves, plant height, fresh tuber weight per plant, wind dry tuber weight per plant, and wind dry tuber weight per m2. The growth and development of shallot plants with the application of Grikulan biological fertilizers were better than those of EM4 biological fertilizers. Treatment of NPK fertilizer dosage of 150% or equivalent to 75 g / m2 supplemented with the application of Grikulan plus fertilizer results in higher production, namely the weight of dry tubers per m2 reaching 1674.33 g or equivalent to 11.72 tonnes/ha. Keywords : EM4, Grikulan plus, shallots,NPK, yield


2015 ◽  
Vol 43 (2) ◽  
pp. 153
Author(s):  
Vira Irma Sari ◽  
Sudradjat , ◽  
Sugiyanta , ◽  
Sudradjat , ◽  
Sugiyanta ,

<p><br />Main nursery is the first step affecting oil palm’s age and productivity. Good plant growth will produce high quality and yield of oil palm. The demand of oil palm seedlings for extensification and replantation increases continuously, and therefore this need to be supported by precise fertilization programs. The objectives of this experiment were to investigate the role of organic fertilizer and to obtain the best organic-NPK fertilizer combination in increasing the effectiveness of the use of NPK fertilizer for the growth of oil palm (Elaeis guineensis Jacq.) seedling in the main nursery. The experiment was conducted from December 2011 to September 2012 at IPB Teaching Farm Dramaga Bogor. The treatment was arranged in a factorial randomized block design with three replications. The first factor was amount of organic fertilizer consisted of 0:6, 1:6, 2:6, and 3:6 of the soil volume (6 kg). The second factor was NPK fertilizer rates, i.e., 0.0, 127.5, 255, and 382.5 g NPK per plant. The results showed that application of organic fertilizer increased the effectiveness of NPK fertilizer and could be a substitute for NPK fertilizer in oil palm seedlings. The best combination treatment was 2:6 (organic fertilizer:top soil) and 382.5 NPK g per plant with effectiveness of 158.9, 209.1 and 170.1 % for plant height, leaf number and stem diameter, respectively. The efficiency of N, P, and K application were 56.2, 11.1, and 29.0% for the same variables, respectively. Based on morphological variables, recommended rate of an NPK compound fertilizer 15-15-15 was in the range of 396.05 g per seedling for eight months. Recommended NPK were 7.00, 12.59, 37.58, 56.41, 36.74, 87.00, 86.60, and 72.97 g per seedling for first to eighth months, respectively.</p><p>Keywords: chlorophyll, fertilizer recomendation, morphological and physiological response, nutrient balance</p>


Jurnal Agro ◽  
10.15575/5776 ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. 14-23
Author(s):  
Ida Nur Istina ◽  
Happy Widiastuti ◽  
Benny Joy

Pemanfaatan pupuk hayati sangat berpotensi untuk menurunkan input produksi pada budidaya kelapa sawit khususnya pupuk. Penelitian bertujuan untuk mendapatkan Bakteri Pelarut P dan Penambat N yang berpotensi sebagai bahan pupuk hayati dari rizosfer tanaman kelapa sawit. Penelitian dilakukan di lahan gambut saprik Kabupaten Pelalawan, Provinsi Riau dari bulan Juni sampai November 2014. Pengambilan sampel tanah dilakukan menggunakan bor gambut pada bagian rizosfer dengan kedalaman sampai 20 cm. Isolasi dan karakterisasi dengan metode pure plate menggunakan media selektif N Ashby untuk penambatan N dan Pikovskaya untuk pelarutan P, sedangkan analisis fiksasi N dan pelarutan P dilakukan menggunakan HPLC dan spektrofotometer di Laboratorium mikrobiologi PT. RPN. Hasil penelitian menunjukkan bahwa tanah gambut saprik berpotensi sebagai sumber isolat bakteri pelarut P dan penambat N potensial. Jumlah isolat bakteri pelarut P yang berhasil diperoleh adalah 11 isolat sedangkan jumlah bakteri penambat N non-simbiotik adalah 6 isolat. Isolat bakteri pelarut P potensial asal Sungai Ara dengan kemampuan melarutkan P 329,94 ppm; sedangkan bakteri penambat N non-simbiotik potensial adalah asal Kuala Panduk dengan kemampuan fiksasi N 0,0293 mmol l-1jam-1. ABSTRACTUtilization of biofertilizer is potential to decrease production inputs on oil palm cultivation, especially fertilizer expense. The research aimed to obtain Solubilizing P-Bacteria and Non-Symbiotic Fixing N bacteria which potential as biological fertilizer from oil palm rhyzosphere. The research was conducted at Pelalawan sapric peat soil from June to November 2014. Soil samples were taken by using peat drill into 20 cm soil depth, while isolation and characterization used pure plate method by using the selective media N Ashby for N fixation and Pikovskaya for P solubility. N fixation and P dissolution analyzed by using HPLC and spectrophotometer at PT. RPN microbiology laboratory. The results showed that sapric peat soil potentially utilize as microbial resource. The number of phosphate solubilizing bacteria isolates were 11 isolates, while the number of non-symbiotic nitrogen fixation bacteria inhibiting N Azotobacter sp. were 6 isolates. The potential isolate of P-solubilizing bacteria was Sungai Ara origin with the ability to dissolve P about 329.94 ppm; while the potential of non-symbiotic N-fixing bacteria was Kuala Panduk origin with N fixation ability 0.0293 mmoll-1h-1.


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