Emma Trinurani Sofyan's research while affiliated with Universitas Padjadjaran and other places

Publications (47)

Article
[PHOSPHOROUS AVAILABILITY, ITS UPTAKE AND YIELD OF SWEET CORN UNDER THE APPLICATION OF UREA AND PK FERTILIZERS IN JATINANGOR INCEPTISOLS]. Maize is one of the staple foods cultivated in Indonesia. Low soil fertility causes the low production of maize. Sweet corn requires sufficient nutrients to grow and produce optimally. The application of a combi...
Article
Effort to increase the efficiency of fertilizer use, reduce loss of nutrients in the soil due to leaching, evaporation and reduce residues which can be one of the causes of soil damage, slow release fertilizer is needed. This slow-release fertilizer can optimize plant growth and production as well as nutrient absorption by plants because the releas...
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Upaya meningkatkan produksi padi secara berkelanjutan dan mengurangi kebutuhan pupuk anorganik dapat dilakukan dengan pemanfaatan sumber daya hayati yang potensial untuk meningkatkan pertumbuhan tanaman. Mikroorganisme lokal atau MOL merupakan salah satu alternatif yang dapat digunakan masyarakat atau petani untuk mengurangi kebutuhan pupuk anorgan...
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Biofertilizers are compounds that contain microorganisms capable of increasing the nutrient availability to plants and increasing plant growth rate. The purpose of this research is to study the effects of biofertilizers and organic ameliorants on some of soil bio-chemical properties. The pot experiment was conducted at the field of the Faculty of A...
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Proses pembentukan dan perkembangan tanah di lokasi penelitian merupakan langkah awal untuk diketahui dalam upaya mendapatkan informasi karakteristik tanah. Pengembangan lahan pertanian memerlukan informasi dasar tentang tanah dengan mengetahui semua sifat atau karakteristik tanah tersebut. Tujuan dari penelitian ini adalah untuk mengetahui proses...
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Conventional productivity improvement still relies on the use of inorganic fertilizers. The continuous use of inorganic fertilizers is not effective in supporting the improvement of soil health; therefore it is necessary to use environmentally friendly fertilizers such as bio fertilizers. A pot experiment was carried out to study the effect of bio...
Article
River pollution is still a problem in most countries, especially in developing countries, such as Indonesia. Several methods have been used to reduce the level of pollution across these water sources. In West Java Indonesia, Cipeusing is one of the highest polluted rivers that need analysis of pollution index to produce a value for indicating the r...
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Shallot (Allium ascalonicum L.) is a horticulture commodity that has a lot of benefits and also prospective due its increasing demand. Annual shallot productivity in Indonesia is unstable due to nutrient degradation on agricultural land, therefore efforts are needed to promote the productivity of shallot. One of the solution using NPK fertilization...
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One of the efforts to increase crop yield based in sustainable agriculture is through the utilization of microbial inoculants (biofertilizers) and soil conditioners. Biofertilizer is an ingredient that contains beneficial microbial inoculants to increase soil nutrient availability for plants. Biochar has been recognized as a soil conditioner by imp...
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Rice, corn and soybeans are the main food commodities in Indonesia. The expansion of agricultural land in suboptimal areas has been carried out to increase the production of these commodities. However, with the limited suboptimal land conditions, the fit fertilizer engineering should be found. The purpose of this experiment was to evaluate the soil...
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The beneficial soil microbes influence plant growth and soil quality. The soil microbes include phosphate solubilizing microbes and nitrogen-fixing bacteria. The experiments had been conducted to investigate the application of phosphate-solubilizing mircrobes and nitrogen-fixing bacteria and N, P, K fertilizers on soil nitrogen (N), chlorophyll and...
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This study was conducted to evaluate the effect of organic fertilizer (i.e. cow manure) and inorganic fertilizer application on nutrient uptake and yield of sweet corn (Zea mays saccharata Sturt). Inceptisols possesses low soil fertility and relatively low to moderate level of organic matter content. Application of organic fertilizer in combination...
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The soil ecosystem plays an important role in soil health, nutrient availability, and agriculture productivity. Ecosystem alteration from natural forest into oil palm plantation has occurred in the past few years. Therefore, it is needed to study the microbial abundance which has a great role in the nutrient cycle. This experiment was conducted in...
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Ultisols have low soil fertility problems. Beneficial microbes such as biofertilizers could improve soil fertility and the productivity of Ultisols sustainability. The purpose of this research was to study the contribution of biofertilizers and NPK fertilizers to increase growth and yield of upland rice on Utisols. This experiment used a Randomized...
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Intensive inorganic may lead to land degradation, and can be amended with the aid of biofertilizers . This study was conducted to investigate the application of biofertilizer (phosphatesolubilizing mircrobes and nitrogen-fixing bacteria) and inorganic fertilizers on the growth of upland rice on Andisols. Randomized Block Design (RBD) in factorial p...
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Hydroponics is one of the urban farming techniques that can be used to improve crop yield. Nowadays, the supply of all nutriens in hydroponics, particulary phosphate only derived from inorganic fertilizers. Application of arbuscular mycorhiza fungi (AMF) as bioagent may help plants to fill its nutrient need, especially phosphate. This study aimed t...
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PPhosphorus availability becomes a major problem on the productivity of soil and rice in Indonesia. Utilization of P source which has a slow release property is one of the solutions to these problems. Biofossi fertilizer is a natural phosphate organic fertilizer which is enriched with phosphate solubilizer bacteria (PSB), to improve the solubility...
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This experiment conducted at the greenhouse of Agriculture Faculty, Universitas Padjadjaran, Jatinangor, West Java, Indonesia elevated at ± 782 m above sea levels. The aim of this experiment is to determine the effect of phosphate solubilizing bacteria and organic fertilizer on the phosphatase, P available, P uptake, and growth of sweet corn which...
Article
The use of organic materials and minerals as fertilizer needs to be developed in order to increase agricultural productivity, especially in soils marginal that are widely distributed on the Indonesian. This study aims to determine the productivity of soil and corn plants by using various formulations of organo-mineral materials in the Ultisols Jati...
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In Indonesia, Inceptisols is the largest soil order on which intensive agriculture is done. The fertility of this soil order is low, so that it is necessary to improve the soil fertility by using biofertilizers and organic matter. The objectives of this experiment were to determine the effect of a biofertilizer that contains microbe Azotobacter sp....
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Conventional farming for potato production in Indonesia has been using NPK fertilizer at high application rates. Any adverse environmental effects that might arise trough this fertilizer use shall be avoided. Application of bioferrtilizer consisted of ArbuscularMycorrhizal Fungi (Glomus sp.) isolated from the potato farming area and Mycorrhizal Hel...
Conference Paper
Pengujian Pupuk Ammonium Klorida BUMI IJO ini dilakukan di Kebun Percobaan Ciparanje, Fakultas Pertanian Universitas Padjadjaran, Kampus Jatinangor, Kabupaten Sumedang, Jawa Barat. Lokasi penelitian memiliki ketinggian 820 m di atas permukaan laut, dan analisis laboratorium dilaksanakan di Laboratorium Kimia Tanah Fakultas Pertanian Universitas Pad...
Article
Hydroponic system is an alternative agricultural cultivation technology that able to answer the problem of narrowing farmland, decline in soil fertility, and the need of healthy foods. Production of tomato with this system has its own market segment, but it needs a specific treatment, such as preparation of planting medium, usage of fertilizer and...
Article
The use of organic fertilizer in the form of manure at as dose of 5000-10000 kg.ha-1 has been practiced by corn farmers, while the Solid Organic Fertilizer (SOF) in a small dose isn’t quite is known among of corn farmer. This study aims to determine the effect of POPC combined with N P K to the results of corn (Zea mays L.). The research was carrie...
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Application of liquid organic fertilizer formula plus on degraded soil to improve the productivity of the land and chili (Capsicum annuum L.) productionSoil exploitation in large numbers occurred in the District Wanaraja of Garut Regency. Excavation of soil more than 2 meters from the top layer for the manufacture of red bricks has exceeded the abi...
Article
One effort to increase the productivity of soybeans in Inceptisols Jatinangor is through utilize inoculant of soil microorganisms such as nitrogen-fixing bacteria and phosphate-solubilizing bacteria in the form of specific biofertilizer (SB) for soybean plant without leaving inorganic fertilizer as a source of available nutrients to plants. This re...
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Quality of biofertilizer such as arbuscular myorrhizal fungi could be improved through the selection of appropriate sterilization and composition of the medium. The objective of the experiment was to determine the effect of sterilization and carrier composition on root colonisation, root length and weight of sorghum root. A green house experiment w...
Article
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The use of high chemical fertilizer rates in potato production has been applied on the farm in Indonesia. Application of biofertilizer consists of arbuscular mycorrhizal fungi has been tested to reduce the use of NPK rates in production of potato and to determine whether different soil types will have different response to this biofertilizer. A gre...

Citations

... Compatibility means that bacteria are able to survive or not be affected at all by the presence of external substances. Several factors affecting the compatibility of a bacterium with other substances are the species of bacteria, the ability to tolerate antibiotic compounds, and the ability to produce cell-protective compounds such as polysaccharides (Eveno et al. 2020;Fitriatin et al. 2020). ...
... The P 2 O 5 content of loamy sand soil on arable land is classified as 'very low' (below 3), 'low' (4-9), 'medium' (10)(11)(12)(13)(14)(15)(16)(17)(18), 'high' (19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30)(31)(32), and 'very high' (above 33) mg P 2 O 5 per 100 g soil at 0-30 cm depth [25]. At the start of the trial the soil P content, as well as the K level were therefore classified as medium. ...
... Relevant proposals are made in light of the existing water pollution problem. Suriadikusumah et al. (2020) investigated the physical, chemical, and microbiological parameters of the Cipeusing River using the pollution index method. According to the findings, the river was moderately polluted in 2016 and highly polluted in 2017. ...
... So many nutrients are essential for the high throughput production of edible crops, but fertilizer alone cannot sustain the productivity of soils under highly intensive cropping systems. In addition, using biofertilizers as an integrated nutrient management strategy can help mitigate several nutrient deficits [19]. Therefore, in the present investigation, we examine the effects of R. irregularis (AMF) and A. chroococum (PGPB) with a combination of chemical fertilizer on the morphological and biochemical parameters of bell pepper. ...
... In general, the Azospirillum promotes plant growth and yield by modifying the cell wall elasticity or the morphology of the root, or both and through the production of phytohormones (Fukami et al., 2018;Lesueur et al., 2016). Likewise, endophytic and associative N 2 fixation in nonleguminous crops such as wheat (Kanitkar et al., 2020), rice (Fitriatin et al., 2019), maize (Zeffa et al., 2019), strawberry (Rueda et al., 2016), and sugarcane (Arthee and Marimuthu, 2017) using free-living diazotrophs like Azotobacter, Azospirillum, Gluconacetobacter, and Burkholderia has been reported. ...
... Kelimpahan dan interaksi saling menguntungkan antara komunitas mikroba tanah dengan tanaman dapat menunjang pertum-buhan dan perkembangan tanaman (Ohiwal et. al. 2017;Syarifain et. al., 2019). Timmusk et. al. (1999) menyatakan bahwa bakteri yang terdapat pada tanah dapat menghasilkan hormon yang dapat mempengaruhi pertumbuhan tanaman (fitohormon) baik secara langsung meningkatkan pertumbuhan tanaman serta sebagai fasilitator dalam penyerapan berbagai unsur hara dari lingkungan dan secara tidak langsung melalui mekanisme peng ...
... Biofertilizers play an important role in increasing land productivity in a sustainable manner and can increase plant growth and yield [5,6]. Those biofertilizers increased sub-optimal soil nutrients including P-solubilizing microorganisms and N-fixing bacteria [7]. The application of inorganic fertilizers can adversely affect soil quality, so it needs to be combined with various kinds of organic or biofertilizers. ...
... Basic fertilization with the manure of 200 t ha -1 , or equivalent to 8 g pot -1 , was carried out. SP-36 fertilizer with a dose of 147 kg ha -1 , or equivalent to 0.735 g pot -1 , and KCl fertilizer at a dose of 100 kg ha -1 , or equivalent to 0.5 g pot -1 , were prepared (Sofyan et al., 2019). SP-36 and KCl fertilizers were added 5 days after incubation or together with the planting of sweet corn seeds. ...
... Penelitian yang telah dilakukan oleh Adamy et al. (2012) menyatakan bahwa pemberian pupuk organik granul dapat mengurangi penggunaan pupuk NPK sebesar 25% dari dosis rekomendasi pada tanaman jagung. Lebih lanjut menurut Hermawan et al. (2018) kombinasi pupuk N, P, K dengan POG dapat meningkatkan Ptersedia dan serapan hara tanaman jagung pada tanah Inceptisols. Penelitian ini bertujuan untuk melihat pengaruh penggunaan POG yang dikombinasikan dengan pupuk N, P, K yang diharapkan akan meningkatkan pertumbuhan dan hasil tanaman buncis tegak serta dapat mengurangi penggunaan pupuk anorganik. ...
... Oats did not provide N to the subsequent crop. Fitriatin et al. [177] determined phosphate solubilizing bacteria (Bacillus mycoides, Bacillus macerans, and Pseudomonas pseudoalcaligenes) and cow manure organic fertilizer and green manure significantly increased soil phosphatase, P available, P uptake, and growth of sweet corn. The isolate of P. pseudoalcaligenes combined with green manure gave the highest P available in the soil. ...