scholarly journals PENGARUH APLIKASI BAKTERI PELARUT FOSFAT DAN PUPUK ANORGANIK FOSFAT TERHADAP POPULASI BAKTERI PELARUT FOSFAT, P-TERSEDIA, DAN HASIL TANAMAN JAGUNG PADA ALFISOL

2021 ◽  
Vol 8 (2) ◽  
pp. 437-449
Author(s):  
Gertruda Lovitna ◽  
Yulia Nuraini ◽  
Nurul Istiqomah

Fulfilment of nutrients for plants can be maximized when fertilization, but the application of inorganic fertilizers can cause damage to the soil if the dosage is excessive. The utilization of phosphate solubilizing bacteria is an effort to increase the efficiency of phosphate fertilization that can extract phosphate from an insoluble form that becomes available. This study aimed to obtain a combination of inorganic fertilization doses (SP-36 and NPK) and the application of biological fertilizers that utilize phosphate solubilizing bacteria (PSB) to increase the population of phosphate solubilizing bacteria and P-available in the soil, as well as corn crop yields. This study used a randomized block design with nine treatments and three replications. The result showed that the application of PSB and inorganic phosphate fertilizer shows a significant effect on the population of PSB, P-available, plant height, stover dry weight, cob weight with husk and cob weight without husk, but didn’t show a significant effect on 100 seeds weight and number of plant leaves. Based on the correlation analysis, the results show a positive correlation between soil chemical properties, P-available, and corn yield.

Agrologia ◽  
2017 ◽  
Vol 6 (2) ◽  
Author(s):  
Betty Natalie Fitriatin ◽  
Mayang Agustina ◽  
Reginawanti Hindersah

Ultisol is low fertility soil and as low available P due to P fixation by Al and Fe. The phosphate solubilizing microbes (PSM) is the microbial group that enable realease fixed-P to soil solution and be absorbed by plant. This research was aimed to determine the effects of PSM biofertilizer and phosphate fertilizer dosage combination on soil potential P, total phosphate solubilizing bacteria (PSB) population and yield of maize (Zea mays L.) grown in Ultisols. This research used a Randomized Block Design that consist of nine treatments with three replications. The treatments were 100 kg ha-1 of SP-36 fertilizer, 50 kg ha-1 of PSM biofertilizer, SP-36 fertilizer (50 kg ha-1 and 100 kg ha-1) with PSM biofertilizer (25 kg ha-1, 50 kg ha-1 and 75 kg ha-1) repectively. The result showed that the combination of PSM and phosphate fertilizer dosage had significantly effect on PSB total population and maize yield, but did not not on  potential P. This experiment suggested that SP-36 fertilizer with 50 kg ha-1 dosage and PSM biofertilizer with 50 kg ha-1 dosage is the best combination.


Author(s):  
Yubaraj Dhakal ◽  
Ram Swaroop Meena ◽  
Sushil Kumar

A field experiment was carried out at Varanasi (Uttar Pradesh) during kharif season of 2013 to study the influence of integrated nutrient management on greengram [Vigna radiata (L.) Wilczek].Three sources of nutrients viz. inorganic, organic and bio-fertilizers were used in twelve combinations with randomized block design. Among different combinations, significant improvement in number of nodules/plant (80.97), dry weight of nodules (32.89 mg/plant), yield attributes, seed yield (12.34 qt/ha), harvest index (28.32%), nutrient content, available NPK and organic carbon after harvest in soil were recorded with application of nutrients through 75% RDF + 2.5 t/ha vermicompost + rhizobium + Phosphate solubilizing bacteria (PSB) as compared to other combinations and control, but it was at par with 100% RDF + 2.5 t/ha vermicompost and 100% RDF + rhizobium + PSB.


2020 ◽  
Vol 5 (1) ◽  
pp. 300-304
Author(s):  
Betty Natalie Fitriatin ◽  
Dita Fauziah ◽  
Fabira Nur Fitriani ◽  
Dewi Nurma Ningtyas ◽  
Pujawati Suryatmana ◽  
...  

AbstractPhosphorus availability is the major constraint for plant growth in the acid soil ecosystem, due to high fixation by Al and Fe. Microbial fertilizers such as phosphate-solubilizing bacteria (PSB) can increase P availability in soils for root uptake. The objective of the research was to verify the ability of four isolates of PSB isolated from acid soil to solubilize unavailable inorganic phosphate, produce phosphatase, malic acid and indole acetic acid (IAA), as well as increase plant height of maize seedling. The bioassay by growing maize seedling in liquid nutrients has been performed to study the response of seedling to PSB inoculation. The experimental design of bioassay was a randomized block design with five replications. The results showed that the isolates RR 1 and SPR 4 had a relatively high solubilizing index. Moreover, all the PSB isolates had the ability to produce phosphatase and IAA and dissolve P. The performance of PSB-inoculated seedling was better visually and the root length was increased by 66.7–74.5% compared to the control. This result concludes that the species of four isolates needs to be identified by a biomolecular method and formulated as biofertilizers for increasing the maize productivity in the acid soil ecosystem.


2017 ◽  
Vol 2 (6) ◽  
pp. 179
Author(s):  
Betty Natalie Fitriatin ◽  
Pujawati Suryatmana ◽  
Anny Yuniarti ◽  
Noor Istifadah

Ultisols has problems of low availability of nutrients, especially phosphorus. To improve soil phosphate and P fertilizer efficiency, it is necessary to develop biofertilizer such as phosphate solubilizing microbes. Phosphate solubilizing microbes (PSM) have the capability of dissolving soil phosphorus which have been adsorbed and can mineralize organic P to become inorganic P, hence increasing the avalibility of P in the soil. Phosphate solubilizing bacteria (Pseudomonas mallei and Pseudomonas cepacea) and phosphate solubilizing fungi (Penicillium sp. and Aspergillus sp) were selected based on their ability to dissolve P. The experiment was conducted at Jatinangor, West Java Indonesia to study the application of PSM biofertilizer to increase soil P and yield of maize. Experiment used a Randomized Block Design (RBD) in factorial pattern, consisting of two factors with three replications. The first factor consisted of PSM biofertilizer, which were; without PSM, 5 L ha-1 of PSM and 50 kg ha-1 of PSM.  The second factor was P fertilizer with five levels (0%, 25%, 50%, 75% and 100% dosage of recommendation). The results showed that the application of PSM biofertilizer increased soil phosphate and yield of maize on Ultisol Jatinangor.  The dosage of P inorganic fertilizers was reduced by 50%.Keywords: ultisol, maize, biofertillizer, phospate-solubilizing bacteria.


2020 ◽  
Vol 26 (1) ◽  
pp. 23
Author(s):  
Nur Eko Prasetyo ◽  
Budi Setyawan ◽  
Samijan Samijan ◽  
Nofitri Dewi Rinojati ◽  
Sumarmadji Sumarmadji

<p>The physical and chemical properties of the growing medium for <em>root trainer</em> of rubber are critical to support plant growth. This study aimed to obtain the best medium for growing rootstock rubber seedlings in the <em>root trainer</em>.  Rubber clone PR 300 seeds were germinated for 21 days, then raised in <em>root trainer</em> pots for five months. The treatments evaluated were a mixture of <em>cocopeat</em>, Rawapening peat, and manure at different ratios.  The experiment was designed in a Randomized Block Design, three replications, 30 plants per replicate, totaling 720 plants. The observed variables were N, P, K, Mg, C-organic content, pH, and cation exchange capacity of <em>cocopeat</em>, peat, and manure, as well as plant growth (height, stem diameter, wet weight, and dry weight). ANOVA used for analyzing data, followed with the <em>Duncan Multiple Range Test</em> at 5% level. The results showed that there were three best <em>root trainer</em> media for PR 300 rubber rootstock seedlings were a mixture of <em>cocopeat</em> + peat (1:1), <em>cocopeat</em> + peat + manure (1:2:1), and <em>cocopeat</em> + peat + manure (2:1:1). The growth and compactness of the roots are outstanding, so the seedlings are easily removed from the <em>root </em><em>trainer</em> pots without significant damage. Based on the initiation and cost, the best <em>root trainer</em> medium is a mixture of <em>cocopeat</em> + peat + manure (1: 2:1). It is necessary to study the use of other types of peat soils apart from Rawapening. Also, it needs to be observed further plant growth after inoculation with the stem and after planting in the field.</p><p><strong>Keywords </strong>: Planting medium, Rawapening peat, rubber clone PR 300.<em></em></p><p><em><br /></em></p><p><strong>Abstrak<br /></strong></p><p>Sifat fisik dan kimia media tanam di dalam wadah <em>root trainer</em> bibit karet sangat penting untuk mendukung pertumbuhan tanaman. Penelitian ini bertujuan mendapatkan media terbaik untuk pertumbuhan bibit batang bawah karet di dalam <em>root trainer</em>.  Benih klon karet PR 300 dikecambahkan selama 21 hari pada bedeng pengecambahan kemudian dipindah-tanam dan dibesarkan selama 5 bulan dalam pot <em>root trainer</em>. Perlakuannya yaitu campuran <em>cocopeat</em>, gambut Rawapening, dan pupuk kandang (pukan) pada berbagai ratio, dan kontrol. Penelitian dirancang secara Acak Kelompok, tiga ulangan, masing-masing 30 tanaman, sehingga totalnya 720 tanaman. Variabel yang diamati yaitu kandungan N, P, K, Mg, C-organik, pH, dan kapasitas tukar kation dari <em>cocopeat</em>, gambut, dan pupuk kandang, serta pertumbuhan tanaman (tinggi, diameter batang, bobot segar, dan bobot kering). Data dianalisis dengan ANOVA, kemudian <em>Duncan Multiple Range Test</em> pada taraf 5%. Hasil penelitian menunjukkan bahwa ada tiga macam media <em>root trainer</em> terbaik untuk bibit batang bawah karet klon PR 300 yaitu campuran <em>cocopeat </em>+ gambut (1:1), <em>cocopeat </em>+ gambut + pukan (1:2:1), dan <em>cocopeat </em>+ gambut + pukan (2:1:1). Pertumbuhan dan kekompakan akar sangat baik sehingga bibit mudah dilepas dari <em>root tainer</em> tanpa kerusakan berarti. Berdasarkan kepraktisan dan biaya maka media <em>root trainer</em> terbaik adalah campuran media <em>cocopeat </em>+ gambut + pukan (1:2:1). Perlu dilakukan kajian mengenai pemanfaatan tanah gambut jenis lainnya selain dari Rawapening. Selain itu, juga perlu diamati lebih lanjut pertumbuhan tanaman setelah diokulasi dengan batang atas maupun setelah ditanam di lapangan.</p><p><strong>Kata kunci </strong>: Gambut Rawapening, klon karet PR 300, media tanam.</p>


2018 ◽  
Vol 1 (2) ◽  
pp. 68
Author(s):  
Lely Wahidah Nasution ◽  
Chairani Hanum ◽  
Hamidah Hanum

AbstractSoybean is useful for tofu, tempe, soy sauce and soy milk. The effective use of fertilizer and organic application can increase soybean productivity. The objective of this research was to study the growth and yield of various soybean varieties on application of phospate fertilizer and organic matter. This research was conducted in North Binjai and Research and Technology Laboratory Agriculture Faculty Universitas Sumatera Utara, Medan on May-September 2016. The method used Randomized Block Design with 3 factors. The first factor is soybean varieties consisting of: (Argomulyo, Dering, Dena, Kaba, Gema, Grobogan and Wilis), fertilization of phosphate (control and 150 kg/ha) and organic material application (control, Blotong 10 ton/ha and POEFBC/Palm Oil Empty Fruit Bunches Compost 10 ton / Ha). The results of this research showed that the seven varieties of soybean had characteristic differences on shoot dry weight, age of flowering, age of harvest, phospate uptake and dry weight of 100 seed. The longest flowering and harvesting age is obtained in Wilis, while the shortest age is Grobogan. The highest uptake of P in Argomulyo with treatment without organic matter and phospate fertilizer. Kaba variety with blotong treatment has the highest dry seed weight.Keywords : Organic Matter, Phosphate Fertilizer, Soybean Varieties


Agrologia ◽  
2015 ◽  
Vol 4 (1) ◽  
Author(s):  
Reginawanti Hindersah ◽  
James Matheus

Contaminant levels of cadmium (Cd) in tin mine tailings often exceeds the upper limit.  Relatively high Cd content might  decrease crop yields and threatened food chain. Bioremediation by using  indigenous microbes to lower soil Cd shoud be done prior to use tailings for cultivation. The objective of this experiment was to obtain information about the capacity of  indigenous bacterias to induce bacterial proliferation  in the rhizosphere, corn growth during the early vegetative stage and change the concentration of Cd in soil and plants. Pot experiment was set up in  a Randomized Block Design consist of several combination of  two bacterial isolates and their doses.  Maize seeds were sown in  tailings from the mine site on the island of Bangka and inoculated with indigenous bacteria. The results showed that the bacterial inoculation increased number of bacteria in the rhizosphere  and plant height, but only isolates BKH1 with a dose of 5 mL/plants that increased plant dry weight. Soil Cd content decreased when inoculated by bacteria although not statistically significant, while the effect of inoculation on plant Cd uptake was inconsistent.


Author(s):  
Marcelo E. Bócoli ◽  
José R. Mantovani ◽  
José M. Miranda ◽  
Douglas J. Marques ◽  
Adriano B. da Silva

ABSTRACT Organic materials subjected to a process of anaerobic digestion in a digester produce biofertilizer that can be used in agriculture as nutrient source. The objective of this study was to evaluate the effect of pig slurry biofertilizer on soil chemical properties and on corn yield and nutrient concentrations in leaves and kernels. The experiment was conducted in the field from November 2012 to April 2013, and was arranged in a randomized block design with seven treatments and four replicates. The treatments consisted of doses of pig slurry biofertilizer (0; 40; 80; 120; 160; 200 and 240 m3 ha-1), applied to the soil surface in a single application, at stage V2 of corn plants. Thirty-three days after biofertilization, soil samples were collected in each plot. Corn was harvested 129 days after sowing. Doses up to 240 m3 ha-1 of pig slurry biofertilizer applied to soil with good fertility did not influence soil chemical properties and corn yield. The use of pig slurry biofertilizer had no detectable effect on nutrient concentrations in corn leaves and kernels.


2020 ◽  
Vol 10 (2) ◽  
pp. 110
Author(s):  
MADE KRISNANDA ADI SAPUTRA ◽  
KETUT DHARMA SUSILA ◽  
TATI BUDI KUSMIYARTI

Effect of Some Fertilizer Formulas on Soil Chemical Properties and Yield of Green Mustard (Brassica juncea L.) in Subak Tegal Lantang, West Denpasar District. The aims of this study is to determine the effect of several fertilizer formulas on soil chemical properties and yield of green mustard (Brassica juncea L.) in Subak Tegal Lantang, West Denpasar District. This study used a Randomized Block Design (RBD) consisting of 6 treatments including controls and repeated 4 times with a total of 24 treatment plots. Fertilization treatment consists of three types of fertilizers, namely organic fertilizer, inorganic fertilizer, and biofertilizer. The fertilizer formula tested consisted of P0 = control (without fertilizer), P1= 5 tons of compost ha-1 + 300kg Phonska ha-1 + 200kg Urea ha-1, P2= 5 tons of compost ha-1 + 300kg Phonska ha-1 + 200kg Urea ha-1 + biofertilizer (1 cc / liter water / plot), P3= 10 tons of compost ha-1 + 300kg Phonska ha-1 + 200kg Urea ha-1, P4= 10 tons of compost ha-1 + 300kg Phonska ha-1 + 200kg Urea ha-1 + biofertilizer (1 cc / liter of water / plot), P5= biofertilizer with a concentration of 1 cc / liter of water / plot. The data from the observed parameters then analyzed statistically using analysis of variance (Anova) to determine the significance of the treatment. If it has a significant effect on the parameters observed, then it will be followed by the LSD test at the 5% real level. The results of study showed that the fertilizer formula treatment had a very significant effect on organic-C (P <0,01) and significantly affected the plant fresh weight (P <0,05), but had no significant effect on the acidity (pH), total-N, available-K, available-P, cation exchange capacity, base saturation, plant height, number of leaves, and plant dry weight. The P4 fertilizer formula gave the highest increase in soil organic-C content significantly by 2.99% or an increase of 66% compared to the control and gave the highest yield of fresh greens mustard by 23.64 tons ha-1.


2020 ◽  
Vol 6 (2) ◽  
pp. 44
Author(s):  
MONO RAHARDJO ◽  
ROSITA SMD ◽  
I. DARWATI

<p><strong>Status of cadmium and rhizome yield l/temuireng (Cur¬ cuma aeruginosa Roxb.) at by d fferent dosages phos¬ phatefertilizer</strong></p><p>Cadmium is a heavy metal which is for human being. The concentration of Cd in the soil will increase if phosphate fertilizer is applied, because Cd is available in the sediment rock of phosphate as a raw material for phosphate fertilizer. Recently it is said that simplicia of medicinal crops originated from Asia is contaminated with heavy metals. That contamination mainly derives from Ihe environmental growth. Theefore, the research on the status of Cd in rhizomes Curcuma aeruginosa Roxb. due phosphate fertilizer is essential to be conducted. The experiment was conducted in the experimental garden of Research Institute for Spice and Medicinal Crops from August 1997 - June 1998. The experiment used polybags which were illed with 25 kg Bogor dry latosol soil mixed with I kg of rice husk and 2 kg cattle manue It used randomized block design (RBD) with four replications and ive samples each treatment. The treatments were (I) no NPK; and 8 dosages of TSP, (2)0; (3)2.5; (4)5; (5)7.5; (6)10.0; (7)12.5; (8)15.0; and (9)20.0g/ polybag respectively. Each TSP treatments was added with 1 5 g uea and 19 g KCI/ polybag. The plant wee harvested at 8.5 month after planting. The results of experiments showed that application of2.5; 5; 7.5; 10; 12.5; 15; and 20 g/polybag of TSP increased dry weight of simplicia from 24.3- 40%. The content of Cd in rhizomes, produced by plant with 5 up to 20 g TSP fertilizer was 1.181 - 2.756 ppm. The Cd content was higher than tolerance limited value as determined by laws of heavy metal in Japan (I ppm) and WHO (0.24 ppm). While fertilizer teatments of 0 and 2.5 g TSP produced rhizomes with Cd content 0.630 - 0.945 ppm, and it is still under tolerance limited value by Japan, but, higher than WHO laws. Due to high Cd content in rhizomes (1.181 - 2.756 ppm), those simplicia can not be used as row material for medicine.</p>


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