Article Per Year (5 Year)
p-Index From 2021 - 2026
2.147
P-Index
This Author published in this journals
All Journal Jurnal Ilmu Pertanian Indonesia Caraka Tani - Agriculture Science Journal Sains Tanah JTSL (Jurnal Tanah dan Sumberdaya Lahan) Journal of Degraded and Mining Lands Management AGRIVITA, Journal of Agricultural Science SAINS TANAH - Journal of Soil Science and Agroclimatology Caraka Tani: Journal of Sustainable Agriculture Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Bioedukasi: Jurnal Pendidikan Biologi Molekul: Jurnal Ilmiah Kimia Asian Journal of Agriculture PRIMA: Journal of Community Empowering and Services AgriHealth: Journal of Agri-food, Nutrition and Public Health Community Empowerment Proceeding Biology Education Conference AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Agroindustrial Journal JURNAL HUTAN TROPIS Jurnal Ekosains
Widyatmani Sih Dewi
Department Of Soil Science, Faculty Of Agriculture, Sebelas Maret University
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Medicine & Pharmacology Neuroscience Public Health Social Sciences Other

Published : 36 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 6 Documents
Search
Journal : Sains Tanah

 1 
PENYUSUNAN MODEL PENGELOLAAN KUALITAS TANAH SAWAH DI KECAMATAN JATIPURO KABUPATEN KARANGANYAR Wahyu Adi Nugroho; Sudjono Utomo; Widyatmani Sih Dewi
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 8, No 1 (2011)
Publisher : Faculty of Agriculture, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v8i1.33

Abstract

Title : Paddy Soil Quality Management Modeling in District of Jatipuro, Karanganyar Regency. The intensive paddy soil management were known caused the soil degradation, thus the proper paddy soil quality management was needed to maintain the sustainability of soil function. The aim of the research was built a model that can be used as the reference of paddy soil quality management in district of Jatipuro, Karanganyar regency. The research was executed on October 2008 until February 2009. The research was descriptive explorative, carried out by collecting secondary data for model building and getting sample based on random sampling method at paddy soil in each Soil Map Unit (SMU), laboratory analysis for each selected soil quality indicator, and field observation for model validation. The results showed that the builded model: SQi = 0,414 + 0,363 pH, can be used as the reference of paddy soil quality management in district of Jatipuro. Based on the model then the recommendation of paddy soil quality management could be determined, through increasing pH by submerged the soil and delay the rice planting about 2 weeks after flooding. Keywords: model, paddy soil quality, district of Jatipuro
PENGARUH CACING TANAH DAN BAHAN ORGANIK TERHADAP DINAMIKA POPULASI MIKROBIA BEBERAPA JENIS TANAH Widyatmani Sih Dewi
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 1, No 2 (2002)
Publisher : Faculty of Agriculture, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v1i2.99

Abstract

N/A
KUALITAS VERMIKOMPOS DIDASARKAN PADA CAMPURAN MEDIA, JENIS CACING TANAN, DAN PAKAN TAMBAHAN Widyatmani Sih Dewi; Supriyadi Supriyadi
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 3, No 2 (2003)
Publisher : Faculty of Agriculture, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v3i2.113

Abstract

N/A
KERAGAMAN DAN LAYANAN EKOLOGI MAKROFAUNA EPIGEIK PADA PERTANAMAN WORTEL (Daucus carota L.) YANG DIBERI BERBAGAI IMBANGAN PUPUK ORGANIK DAN ANORGANIK Widyatmani Sih Dewi; Putri Handayani; Sumani Sumani
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 5, No 2 (2008)
Publisher : Faculty of Agriculture, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v5i2.74

Abstract

Title : Diversity and Ecological Services of Epigeic Macrofauna in Carrot Crop (Daucus carota L.) with Some Proportions of Organic and Inorganic Fertilizers. Recently ecological services by macrofauna diversity to sustainable production function of agroecosystem got a lot of attention. Epigeic macrofauna is diverse of macrofaunas which their life and activities are on the land surface, act as decomposer, litter transformer, and`predator, so they are important to keep ecosystem stability. Inorganic fertilizer usage continually on carrot crop without organic fertilizer can reduce soil macrofauna diversity. Improvement can be done by the use of organic and inorganic fertilizer equally. The aim of this research was to measure epigeic macrofauna diversity and their ecological services to carrot production by giving some proportions of organic and anorganic fertilizer. The research conducted in the end of December 2007 in a farmer field in Tawangmangu. It use RAKL (Random Completly Block Design) with single factor treatment. The treatment was fertilizer type usage proportion of organic and inorganic fertilizer. They were composed of 9 proporsition composition as follows: control, 50% inorganic fertilizer, 100% inorganic fertilizer, 50% organic fertilizer, 50% organic fertilizer added by 50% inorganic fertilizer, 50% organic fertilizer added by 100% inorganic fertilizer, 100% organic fertilizer, 100% organic fertilizer added by 50% inorganic fertilizer, 100% organic fertilizer added by 100% inorganic fertilizer. 100% inorganic fertilizer were composed of Urea 150 kg ha-1, SP 36 200 kg ha-1, and KCL 100 kg ha-1. 100% dosage organic fertilizer was 20 tons ha-1. To recognize the treatment effect is done by F test and close relationship among variables tested by corelation analysis. The result showed that organic and inorganic fertilizer proportion didn’t significant to diversity, population dencity and biomass epigeic macrofauna, but affected to β caroten content of carrot. Hymenoptera was dominant macrofauna in carrot crop. Macrofauna function to increase β caroten of carrot is indirect. Key words: fertilizer proportion, epigeic macrofauna,  caroten, Hymenoptera, ecological service
POTENSI ISOLAT MIKROBIA ASAL ANDISOL DIENG, JAWA TENGAH SEBAGAI INOKULUM PUPUK HAYATI PENGOKSIDASI SULFUR Sudadi Sudadi; Ika Ernawati; Sumarno Sumarno; Widyatmani Sih Dewi; Hery Widijanto
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 10, No 1 (2013)
Publisher : Faculty of Agriculture, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v10i1.130

Abstract

Title : Study on The Potency of Soil Microbes Isolated from Andisols of Dieng, Central Java,  as S-Oxidizing Biofertilizer Inoculant. The problem of nutrient deficiences tend to increase, including sulfur deficiency. The use of high purity NPK fertilizers stimulate sulfur deficiency in agricultural land. This problem can be corrected by the use of elemental sulfur accompanied with S-oxidizing biofertilizer. The study aimed to evaluate the potential of sulfur oxidizing microbial isolated from Andisols of Dieng Central Java as S-oxidizing inoculant. Andisols Dieng naturally contains high sulfur that allegedly inhabited many sulfur-oxidizing microbials. The research consisted of two experiments, each arranged in completely randomized design (CRD). Each experiment consist of two factors namely the kind of microbial isolated from Andisols Dieng and incubation time. The first experiment used Czapek-dox+elemental sulfur medium, while the second experiment used vermicompost as medium. The observed variables include soluble-S, bacterial density, biomass of fungi and medium pH. One isolate of bacteria (I1)and three isolates of fungi (F1, F2 and F3) taken from Andisol of Dieng showing their ability to oxidize sulfur in Czapek-dok agar medium. They were used as isolates in the experiment. The result of the first experiment showed that the oxidized sulfur increased with the length of incubation time as indicated by the increase of soluble-S, bacterial cell density or fungi biomass in the medium followed by the decrease of pH. The second experiment showed that the population of bacteria or fungi isolates and soluble-S of vermicompost were increased collaterally with incubation time. The fungi isolate of F2 have the highest potency as inoculant of S-oxidizing biofertilizer as shown by it ability to survive, grows and oxidize S both in Czapek-dox+elemental sulfur liquid medium as well as in vermicompost medium.
Improvement Soil Biology Characteristics of Paddy Field by System of Rice Intensification Widyatmani Sih Dewi
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 12, No 2 (2015)
Publisher : Faculty of Agriculture, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v12i2.475

Abstract

The aim of the research was to test the System of Rice Intensification (SRI) method in improving the biological properties of paddy soil. The indicators of improvement were measured by the number of earthworm feces (cast), and the population of some microbial and nutrient content in the cast. The experiments were performed by comparing the three methods, namely: (1) SRI, (2) semi-conventional, and (3) conventional, using Randomized Completely Block Design. Each treatment was repeated nine times. The experiments were performed in the paddy fields belonging to farmers in Sukoharjo, Central Java. The result showed that the SRI (application of 1 tons ha-1 of vermicompost + 50% of inorganic fertilizer dosage) tends to increase the number of earthworms cast. It is an indicator of earthworm activity in soil. Earthworms cast contains more phosphate solubilizing  bacteria (12.98 x 1010cfu) and N content (1.23%) compared to its surrounding soil. There is a close functional relation between earthworms cast with total tiller number. SRI method is better than the other two methods to improve the biological characteristics of paddy soil that has the potential to maintain the sustainability of soil productivity.
Co-Authors Achmad Adi Surya Sustama Ahmad Yunus Aisyah Defara Rahmadani AKTAVIA HERAWATI Anak Agung Sagung Putri Risa Andriani Anak Agung Sagung Putri Risa Andriani Anggita, Akas Arlindo Fernando Macie Arwa Farida Lukito Atmanto Heru Wibowo Atmanto, Heru Bambang Pujiasmanto Canggih Jati Nusantara Canggih Jati Nusantara, Canggih Jati Desti Dian Amalina Dwi Priyo Ariyanto Dwi Priyo Ariyanto Eko Rini Indrayatie ERDASWIN, FARHAN Farida Yuliani fatimah Fatimah Ferina Pungky Ganjar Herdiansyah Ganjar Herdiansyah Ganjar Herdiansyah, Ganjar Hardian, Tiara Hasanah, Khalyfah Herwin Setyaningsih Hery Widijanto Ika Ernawati Indratin Indratin Indratin Indratin Irmawati, Viviana Istiqomah, Nanda Mei Jauhari Syamsiyah Jauhari Syamsiyah Kalimutu, Krisnawan Komariah K Komariah Komariah Komariah Komariah Krisnawan Kalimutu Kurniatun Hairiah Loveana, Okta Muhammad Rizky Romadhon Mujiyo Mujiyo Ni Luh Putu Putri Setianingsih Ni Luh Putu Putri Setianingsih Noorcahyati Noorcahyati Novizar Nazir Ongko Cahyono Prabang Setyono Priono, Timur Purnomo Edi Sasongko Purwanto Purwanto Purwanto Purwanto Purwanto Purwanto PUTRI HANDAYANI Putri Permatasari Rachmawatie, Srie Juli Rahayu Rahayu Rahayu Rahayu Rahayu Rahayu Ramdan Hidayat Rani Rahmawati Retno Rosariastuti Romadhon, Muhammad Rizky Sapja Anantanyu Sri Hartati Sri Rossati Sri Rossati Sri Wahyuni Sri Wahyuni Sudadi Sudadi Sudadi Sudadi Sudjono Utomo Sulandjari Sulandjari Sumani Sumani Sumani Sumani Sumarno . Sumarno Sumarno Sumarno Sumarno Sumarno Sumarno Suntoro Suntoro Suntoro Suntoro Supriyadi Supriyadi Supriyadi Supriyadi Supriyadi Supriyadi Suryono Suryono Suryono Suryono Sutarno Sutarno Usman Siswanto Vita Ratri Cahyani Wahyu Adi Nugroho Wahyu Galang Pranata Yoviana Erdhika Adiarti