Universitas Sebelas Maret Surakarta, Fakultas Pertanian UNS: Journal Systems
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POTENSI ISOLAT MIKROBIA ASAL ANDISOL DIENG, JAWA TENGAH SEBAGAI INOKULUM PUPUK HAYATI PENGOKSIDASI SULFUR
Get PDFTitle : 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.Masalah kekahatan hara cenderung meningkat, termasuk kekahatan sulfur. Penggunaan pupuk NPK berkemurnian tinggi ikut mendorong terjadinya kekahatan hara di lahan pertanian. Masalah kekahatan hara ini dapat diatasi melalui penggunaan sulfur elementer yang disertai denngan pupuk hayati pengoksidasi sulfur. Penelitian bertujuan untuk mengkaji potensi mikrobia pengoksidasi sulfur yang diisolasi dari tanah Andisol Dieng, Jawa Tengah sebagai inokulan untuk pupuk hayati. Tanah Andisol Dieng secara alamiah mengandung sulfur yang cukup tinggi sehingga diperkirakan dihuni oleh banyak mikrobia pengoksidasi sulfur. Penelitian terdiri dari dua percobaan, masing-masing disusun dalam rancangan percobaan acak lengkap dua faktor, yaitu macam isolat mikrobia hasil isolasi dari Andisol Dieng dan lama inkubasi. Percobaan pertama menggunakan medium cair Czapek-dox + sulfur sedangkan percobaan kedua menggunakan medium vermikompos. Tiap-tiap kombinasi perlakuan diulang tiga kali. Variabel yang diamati meliputi jumlah S terlarut, kerapatan sel bakteri atau biomassa jamur dan pH medium. Dari hasil eksplorasi diperoleh satu isolat bakteri I1 dan tiga isolat jamur F1, F2 dan F3 yang menunjukkan kemampuan mengoksidasi sulfur pada medium Czapek-dox+ sulfur elementer agar. Hasil percobaan menunjukkan bahwa proses oksidasi sulfur meningkat seiring dengan bertambahnya waktu inkubasi yang ditunjukkan oleh meningkatnya jumlah S-terlarut, kerapatan sel bakteri atau biomassa jamur dan menurunnya pH medium. Hasil serupa diperoleh dari percobaan kedua. Isolat jamur F2 menunjukkan potensi yang paling tinggi sebagai inokulan pengoksidasi sulfur yang ditunjukkan oleh kemampuannya tumbuh dan mengoksidasi sulfur yang paling tinggi baik pada medium cair Czapek-dox + sulfur maupun pada medium vermikompos
EFISIENSI SERAPAN S DAN HASIL PADI DENGAN PEMBERIAN PUPUK KANDANG PUYUH DAN PUPUK ANORGANIK DI LAHAN SAWAH (MUSIM TANAM II)
Get PDFTitle : Efficiency of S Up Take and Rice Yield with Quail Manure and Inorganic Fertilizer in Paddy Soil (Season II). The aim of this research was to know the effect of inorganic fertilizer quail manure to efficiency of Sulphur up take and to know treatment combination that give highest rice yield. This research had been done at Palur, Mojolaban, Sukoharjo, started from January until August 2008. This research used factorial experiment that arranged in Randomized Complete Block Design (RCBD) with two factors. The first factor was 3 levels of inorganic fertilizer dosage i.e.: without inorganic fertilizer, 50% recommendation dosage and 100% recommendation dosage (urea, ZA, SP‐36 and KCl were 300, 100, 150 and 100 kg. ha‐1). And second factor was 3 levels of quail manure dosage i.e.:0, 3 and 6 ton.ha‐1. Statistical analysis used F test, Duncan’s Multiple Range (DMR) test at 5% in level and Correlation test. The Result of this research showed that, interaction between inorganic and quail manure increased significantly efficiency of S uptake. Dosage quail manure increased significantly total weight of dry hust. The highest efficiency of S uptake was on 100% recommendation dosage inorganic fertilizer and quail manure dosage 3 ton.ha‐1 (44.12%). The highest total weight of dry hust on 50% recommendation dosage inorganic fertilizer and quail manure dosage 6 ton.ha‐1 Key words: quail manure, efficiency of S uptake and paddy soilThe aim of this research was to know the effect of inorganic fertilizer quail manure to efficiency of Sulphur up take and to know treatment combination that give highest rice yield. This research had been done at Palur, Mojolaban, Sukoharjo, started from January until August 2008. This research used factorial experiment that arranged in Randomized Complete Block Design (RCBD) with two factors. The first factor was 3 levels of inorganic fertilizer dosage i.e.: without inorganic fertilizer, 50% recommendation dosage and 100% recommendation dosage (urea, ZA, SP‐36 and KCl were 300, 100, 150 and 100 kg. ha‐1). And second factor was 3 levels of quail manure dosage i.e.:0, 3 and 6 ton.ha‐1. Statistical analysis used F test, Duncan’s Multiple Range (DMR) test at 5% in level and Correlation test.
The Result of this research showed that, interaction between inorganic and quail manure increased significantly efficiency of S uptake. Dosage quail manure increased significantly total weight of dry hust. The highest efficiency of S uptake was on 100% recommendation dosage inorganic fertilizer and quail manure dosage 3 ton.ha‐1 (44.12%). The highest total weight of dry hust on 50% recommendation dosage inorganic fertilizer and quail manure dosage 6 ton.ha‐1
Key words: quail manure, efficiency of S uptake and paddy soi
Identifikasi Logam Berat Kadmium serta Pengaruhnya Terhadap Populasi Azotobacter dan Bakteri Pelarut Fosfat
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LAJU PERTUMBUHAN DAN PENAMBATAN N2 AZOLLA PADA BERBAGAI INTENSITAS PENYINARAN DAN TINGGI GENANGAN
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PENGARUH SAAT PEMUPUKAN UREA PADA SISTEM GANDA AZOLLA‐PADI SAWAH TERHADAP N‐KAPITAL TANAH DAN HASIL PADI DI ENTISOL
Get PDFTitle : Fertilizing Time Effect of Urea in Dual System Azolla‐Rice Paddy to Soil Capital Nitrogen and Rice Yield on Entisol. The purposed of research was to study the effect of urea use in dual system azolla‐rice paddy to soil capital nitrogen and rice yield on Entisol. Research was conducted on rice paddy field at Colomadu, Karanganyar district, Central Java. The experiment arranged in single factor randomized completely block design (RCBD), with eight treatments says D1 (azolla + 100 kg urea /ha at 0 day after planting‐dap), D2 (azolla + 100 kg urea /ha at 30 dap), D3 (azolla + 100 kg urea /ha at 60 dap), D4 (azolla + 50 kg urea /ha at 0 and 30 dap), D5 (azolla + 50 kg urea /ha at 30 and 60 dap), D6 (azolla + 50 kg urea /ha at 0 and 60 dap), D7 (control treatment ‐ without azolla nor NPK fertilizer), and D8 (lokal farmer treatment ‐ 250 kg urea /ha split three times, 50 kg/ha at 0 dap, 100 kg/ha at 30 dap and 100 kg/ha at 60 dap). Azolla inoculums spreaded 7 dap at rates 500 g/m2. Variables observed were soil capital nitrogen, soil total‐N, tissue total‐N, soil organic matter content and rice yield. Data taken was analyzed with anova and followed with Duncan Multiple Range Test (DMRT) at 5 % level of significant. The results show that the use of urea in dual system azolla‐rice paddy increase soil capital nitrogen, soil total‐N, tissue total‐N, soil organic matter content and rice yield at Entisol. The highest soil capital nitrogen (0,953 kg/ha) and rice yield (8 ton/ha) were taken from the treatment of D8 and D3 respectively.Keywords: azolla‐rice paddy, rice yield, soil capital nitrogen, UreaThe purposed of research was to study the effect of urea use in dual system azolla‐rice paddy to soil capital nitrogen and rice yield on Entisol. Research was conducted on rice paddy field at Colomadu, Karanganyar district, Central Java. The experiment arranged in single factor randomized completely block design (RCBD), with eight treatments says D1 (azolla + 100 kg urea
/ha at 0 day after planting‐dap), D2 (azolla + 100 kg urea /ha at 30 dap), D3 (azolla + 100 kg urea
/ha at 60 dap), D4 (azolla + 50 kg urea /ha at 0 and 30 dap), D5 (azolla + 50 kg urea /ha at 30 and
60 dap), D6 (azolla + 50 kg urea /ha at 0 and 60 dap), D7 (control treatment ‐ without azolla nor
NPK fertilizer), and D8 (lokal farmer treatment ‐ 250 kg urea /ha split three times, 50 kg/ha at 0 dap, 100 kg/ha at 30 dap and 100 kg/ha at 60 dap). Azolla inoculums spreaded 7 dap at rates
500 g/m2. Variables observed were soil capital nitrogen, soil total‐N, tissue total‐N, soil organic
matter content and rice yield. Data taken was analyzed with anova and followed with Duncan Multiple Range Test (DMRT) at 5 % level of significant. The results show that the use of urea in dual system azolla‐rice paddy increase soil capital nitrogen, soil total‐N, tissue total‐N, soil organic matter content and rice yield at Entisol. The highest soil capital nitrogen (0,953 kg/ha) and rice yield (8 ton/ha) were taken from the treatment of D8 and D3 respectively.
Keywords: azolla‐rice paddy, rice yield, soil capital nitrogen, Ure
ANALISIS PENGGUNAAN LAHAN PERTANIAN DI KAWASAN LINDUNG DAS SAMIN UNTUK MITIGASI BENCANA LONGSOR DAN BANJIR
Get PDFTitle : The Analysis of Agricultural Land Use in Protected Areas Watershed Samin for Landslide and Flood Disaster Mitigation. This study aims to analyze the protected areas Samin watershed which use for agriculture. Research done by interpretation of the Rupa Bumi Indonesian Map, Aerial Photos and Google Earth, continued by the field observation. From this study were concluded that the protected area with slope > 45% majority have used by agriculture, while the soil is dominated by Alfisol and Andisol,which have easily eroded and prone to landslides. Most of local protected areas (rivers basin) had disfunction and it is dominated by Entisol.The mentioned cause Samin watershed gristle of floods, dryness dan landslide disaster. Suggested to the local government to consider the revitalization of the protected areas Samin watershed. Keywords: agriculture, disaster mitigation, flood, landslide, Samin WatershedThis study aims to analyze the protected areas Samin watershed which use for agriculture. Research done by interpretation of the Rupa Bumi Indonesian Map, Aerial Photos and Google Earth, continued by the field observation. From this study were concluded that the protected area with slope > 45% majority have used by agriculture, while the soil is dominated by Alfisol and Andisol,which have easily eroded and prone to landslides. Most of local protected areas (rivers basin) had disfunction and it is dominated by Entisol.The mentioned cause Samin watershed gristle of floods, dryness dan landslide disaster. Suggested to the local government to consider the revitalization of the protected areas Samin watershed. Keywords: agriculture, disaster mitigation, flood, landslide, Samin Watershe
MACAM DAN DOSIS PUPUK ORGANIK TERHADAP HASIL DAN KADAR ANTOSIANIN KELOPAK BUNGA ROSELA (Hibiscus sabdariffa)
Get PDFTitle: Kinds and doses of organic fertilizers on the yield and anthocyanin content of Roselle calyx (Hibiscus sabdariffa). A Roselle petal has fresh taste and attractive red color. In addition to containing high vitamin C which also contains the pigment anthocyanin, can be processed into several products that have high economic value. Drug efficacy from Rosella interest include lowering high blood pressure, lower levels of fat and cholesterol, blood circulation, stop cough and facilitate defecation. Increasing crop productivity can be done by providing additional nutrients through the selection of appropriate types of fertilizer, effective and efficient. Vermicompost and fermented organic fertilizer, besides containing the elements necessary macro plants also contains elements such as micro-and growth hormone auxin, cytokinin and gibberellins. The research aims to find out kind of organic fertilizer and the correct dosage to improve results rosella flower petals with high anthocyanin content. Research was done in Jumantono Village, Karanganyar. Is a field trial, RAKL nested with treatment: Various Organic Fertilizers: Bokhasi, Casting, and compost. Dose of fertilizer each: 3; 6; 9 tons / ha. Conclusion, vermi fertilizer to increase growth and yield of Roselle calyx higher compared with fermented manure and compost, vermi fertilizer 9 t / ha is able to provide the highest dry weight of petals compared with the dose and under control. While fertilizer fermented 6 t / ha have been able to increase yields and high dose up to 9 t / ha increase in the result does not mean; dose of compost and fermented which gives a high anthocyanin content is 9 t / ha, while the dose of fertilizer Vermicompost 6 t / ha have been able to provide a high anthocyanin content and increased the dose to 9 t / ha increment is not significant. Keywords: anthocyanin, Hibiscus sabdariffa, organic fertilizer, VermicompostA Roselle petal has fresh taste and attractive red color. In addition to containing high vitamin C which also contains the pigment anthocyanin, can be processed into several products that have high economic value. Drug efficacy from Rosella interest include lowering high blood pressure, lower levels of fat and cholesterol, blood circulation, stop cough and facilitate defecation. Increasing crop productivity can be done by providing additional nutrients through the selection of appropriate types of fertilizer, effective and efficient. Vermicompost and fermented organic fertilizer, besides containing the elements necessary macro plants also contains elements such as micro-and growth hormone auxin, cytokinin and gibberellins. The research aims to find out kind of organic fertilizer and the correct dosage to improve results rosella flower petals with high anthocyanin content. Research was done in Jumantono Village, Karanganyar. Is a field trial, RAKL nested with treatment: Various Organic Fertilizers: Bokhasi, Casting, and compost. Dose of fertilizer each: 3; 6; 9 tons / ha. Conclusion, vermi fertilizer to increase growth and yield of Roselle calyx higher compared with fermented manure and compost, vermi fertilizer 9 t / ha is able to provide the highest dry weight of petals compared with the dose and under control. While fertilizer fermented 6 t / ha have been able to increase yields and high dose up to 9 t / ha increase in the result does not mean; dose of compost and fermented which gives a high anthocyanin content is 9 t / ha, while the dose of fertilizer Vermicompost 6 t / ha have been able to provide a high anthocyanin content and increased the dose to 9 t / ha increment is not significant. Keywords: anthocyanin, Hibiscus sabdariffa, organic fertilizer, Vermicompos
ARAHAN KEBIJAKAN PENGENDALIAN EROSI DAN SEDIMENTASI DI SUB DAERAH ALIRAN SUNGAI KEDUANG KABUPATEN WONOGIRI
Get PDFTitle : The Policy Direction for Controlling of Erosion and Sedimentation at Keduang Sub‐Watershed in Wonogiri Regency. Keduang Sub‐Watershed is one of important sub‐watershed at Bengawan Solo Watershed. Land resources management at Keduang Sub‐Watershed will be influence of environment quality, physic (erosion, sedimentation, debit of Keduang River), chemistry (water quality) and socio economic aspect. This aim research to know the level of erosion and sedimentation and to arrange policy direction for controlling erosion and sedimentation at Keduang Sub‐Watershed, Wonogiri Regency.Research method which is used is descriptive. Data types which are obtained are secondarydata from Centre of Research and Development Technology of Watershed Management, Forestry Department, BPS‐Statistic of Wonogiri Regency and Agriculture Department of Wonogiri Regency. Method of analysis’s data which is used in this research is Universal Soil Loss Equation (USLE) Method to predict the soil erosion. This research method also to arrange modelling of controlling erosion and sedimentation.Results of this research are: the level of erosion in Keduang Sub‐Watershed is 44 ton/ha/year or 1.9 million ton/year. The sediment yield from Keduang Sub‐Watershed to Wonogiri Basin equal 164,000 ton/year. Improving of construction terrace can reduce erosion and sedimentation.Keywords: land resources management, erosion, sedimentation, construction terraceKeduang Sub‐Watershed is one of important sub‐watershed at Bengawan Solo Watershed. Land resources management at Keduang Sub‐Watershed will be influence of environment quality, physic (erosion, sedimentation, debit of Keduang River), chemistry (water quality) and socio economic aspect. This aim research to know the level of erosion and sedimentation and to arrange policy direction for controlling erosion and sedimentation at Keduang Sub‐Watershed, Wonogiri Regency.
Research method which is used is descriptive. Data types which are obtained are secondary
data from Centre of Research and Development Technology of Watershed Management, Forestry Department, BPS‐Statistic of Wonogiri Regency and Agriculture Department of Wonogiri Regency. Method of analysis’s data which is used in this research is Universal Soil Loss Equation (USLE) Method to predict the soil erosion. This research method also to arrange modelling of controlling erosion and sedimentation.
Results of this research are: the level of erosion in Keduang Sub‐Watershed is 44 ton/ha/year or 1.9 million ton/year. The sediment yield from Keduang Sub‐Watershed to Wonogiri Basin equal 164,000 ton/year. Improving of construction terrace can reduce erosion and sedimentation.
Keywords: land resources management, erosion, sedimentation, construction terrac
KAJIAN PENGELOLAAN LAHAN BERDASARKAN TINGKAT BAHAYA EROSI DAN POLA KONSERVASI TANAH DAN AIR DI DESA NGADIPIRO KECAMATAN NGUNTORONADI, KABUPATEN WONOGIRI
Get PDFTitle : Land Management Study Based on The Degree of Erosion Hazard and Water and Soil Conservation Pattern in Ngadipiro, Nguntoronadi, Wonogiri. This research is aimed to identify the land management which has been done in Ngadipiro in order to overcome the erosion problem, to know and to analyze the class of erosion hazard, to get a soil and water conservation technique alternative which are appropriate to the this surrounding. This research is phenomenological qualitative descriptive research where the variable approach is done by field survey. The field unit map is got by pilling up on one another the map of the field use, soil depth and the declivity of the slope. The sample is taken by purposive sampling technique. Data and information about field management is got by analyzing directly to the field and by interviewing the informant key. Data analysis of the erosion prediction erosion hazard degree is done by using the formula of USLE. The result of the research shows that the erosion danger degree can be classified in to 5 class, they are: very light (SPL 4), light (SPL 3), medium (SPL 5), heavy (SPL 2, 6, 8, and 10), very heavy (SPL 1, 7, 9, 11, and 12), erosion that happenes in the field research (190,08 ton/ha/year/land units) has already been dangerous for the soil productivity preservation because it is already in the limit which is allowed (16,05 ton/ha/year/land units). The recommended soil and water conservations are: a) mechanical water and soil conservation: making the construction bench terrace in SPL 1, 5, 6, 7, 8, 9, 10, and 12, making rorak in SPL 2, 3, 4, 6, 7, 10, and 12, b) vegetative soil and water conservation technique: application agroforestry system by path planting in SPL 6, 7, 10, and 12, the use of soil covering plant in every SPL, for most in SPL 11, c) fertilizing as means to improve ingredients organic matter of land in every SPL. Keywords: Erosion hazard degree, land management, soil and water conservationThis research is aimed to identify the land management which has been done in Ngadipiro in order to overcome the erosion problem, to know and to analyze the class of erosion hazard, to get a soil and water conservation technique alternative which are appropriate to the this surrounding.
This research is phenomenological qualitative descriptive research where the variable approach is done by field survey. The field unit map is got by pilling up on one another the map of the field use, soil depth and the declivity of the slope. The sample is taken by purposive sampling technique. Data and information about field management is got by analyzing directly to the field and by interviewing the informant key. Data analysis of the erosion prediction erosion hazard degree is done by using the formula of USLE.
The result of the research shows that the erosion danger degree can be classified in to 5 class, they are: very light (SPL 4), light (SPL 3), medium (SPL 5), heavy (SPL 2, 6, 8, and 10), very heavy (SPL 1, 7, 9, 11, and 12), erosion that happenes in the field research (190,08 ton/ha/year/land units) has already been dangerous for the soil productivity preservation because it is already in the limit which is allowed (16,05 ton/ha/year/land units). The recommended soil and water conservations are: a) mechanical water and soil conservation: making the construction bench terrace in SPL 1, 5, 6, 7, 8, 9, 10, and 12, making rorak in SPL 2, 3, 4, 6, 7, 10, and 12, b) vegetative soil and water conservation technique: application agroforestry system by path planting in SPL 6, 7, 10, and 12, the use of soil covering plant in every SPL, for most in SPL 11, c) fertilizing as means to improve ingredients organic matter of land in every SPL.
Keywords: Erosion hazard degree, land management, soil and water conservatio
