Faculty of Agriculture, Universitas Sebelas Maret (Publishing Systems)
Not a member yet
653 research outputs found
Sort by
PENGARUN PENAMBAHAN DOSIS BAHAN ORGANIK DAN DOLOMIT TERHADAP KETERSEDIAAN DAN SERAPAN P DENGAN INDIKATOR TANAMAN KACANG TANAH (Arachis hypogaea L. (Merr)) PADA TANAH LATOSOL
No full textN/
STUDI TENTANG Aspergilus flavus DAN AFLATOKSIN PADA TAHAP BUDIDAYA KACANG TANAH DARI BEBERAPA LOKASI LAHAN KERING DI KABUPATEN KARANGANYAR
Get PDFTitle : The Study of Aspergilus flavus and Aflatoxin in Peanut Culture on Selected Dry-Land Fields at Karanganyar District. The study was aimed at: 1) Obtaining the data of Aspergilus flavus and Aflatoxin existence in soil and peanut pod of selected dry-land fields at Karanganyar district; 2) Observing the correlation between soil characteristics and the existence of Aspergilus flavus and Aflatoxin. This research was a comparative descriptive experiment, which was conducted from May to November, 2008. The method was by surveying five sub-districts of dry-land fields included: 1) Tasikmadu; 2) Karanganyar; 3) Mojogedang; 4) Jumantono, and 5) Jaten. The observation parameters were consisted of main variables (A. flavus in soil, A. flavus in peanut pod and aflatoxin in peanut pod) and sub-main variables (pH, organic C, total N, soil moisture content and peanut pod’s moisture content). The mean test was then employed to process the obtained data after the laboratory analysis, followed with correlation test to determine the interaction between main and sub-main variables. The results showed that all the selected locations were infected with A. flavus, with the highest population in soil was in the Jaten sub-district (143 cfu.g-1 soil) and the highest population in peanut pod was in the Jumantono sub-district (50.67 cfu.g-1 pod). None of the peanut pods were infected with aflatoxin. Total N, carbon C, pH and soil moisture influenced the existence of A. flavus in soil and peanut pod. Keywords: Aflatoxin, Aspergilus flavus, peanutThe study was aimed at: 1) Obtaining the data of Aspergilus flavus and Aflatoxin existence in soil and peanut pod of selected dry-land fields at Karanganyar district; 2) Observing the correlation between soil characteristics and the existence of Aspergilus flavus and Aflatoxin. This research was a comparative descriptive experiment, which was conducted from May to November, 2008. The method was by surveying five sub-districts of dry-land fields included: 1) Tasikmadu; 2) Karanganyar; 3) Mojogedang; 4) Jumantono, and 5) Jaten. The observation parameters were consisted of main variables (A. flavus in soil, A. flavus in peanut pod and aflatoxin in peanut pod) and sub-main variables (pH, organic C, total N, soil moisture content and peanut pod’s moisture content). The mean test was then employed to process the obtained data after the laboratory analysis, followed with correlation test to determine the interaction between main and sub-main variables. The results showed that all the selected locations were infected with A. flavus, with the highest population in soil was in the Jaten sub-district (143 cfu.g-1 soil) and the highest population in peanut pod was in the Jumantono sub-district (50.67 cfu.g-1 pod). None of the peanut pods were infected with aflatoxin. Total N, carbon C, pH and soil moisture influenced the existence of A. flavus in soil and peanut pod. Keywords: Aflatoxin, Aspergilus flavus, peanu
PENGARUH PEMBERIAN BUTIR LEUSIT DAN KONSENTRASI HNO3 TERHADAP KETERSEDIAAN K ENTISOLS BENGAWAN SOLO DENGAN INDIKATOR TANAMAN KACANG TANAH (Arachis hypogaea. L)
Get PDFTitle : The Effect of Leucite Grain and Nitric Acid Concentration on Potassium Availability of Bengawan Solo Entisols with Peanuts as Plant Indicator (Arachis hypogaea. L). Research in the Glass House of Agriculture Faculty of Sebelas Maret University have been made to study the effect of Leucite grain and nitric acid concentration against availability of potassium from Bengawan Solo Entisols made in April – September 2006. This research is a causal relationship functional research; the approach is done with variables factorial experiment using Complete Random Design (CRD) with 2 factors and 3 times repeated. First factor is adding the Leucite grain (L) consist of 4 stage, that is L0 (without Leucite), L1 (using 5 mesh of Leucite grain), L2 (using 30 mesh of Leucite grain) and L3 (using 80 mesh size of Leucite grain). Second is adding acid concentration of nitrate (M), consists of 4 stage that is M0 (without nitric acid), M1 (adding 0.1M of nitric acid), M2 (adding 0.2M of nitric acid), and M3 (adding 0,3M of nitric acid). The first shaken with second factor for 24 hours before applied to soil. Analysis of data is using Analysis of Variance and Duncan’s Multiple Range Test. Results of research shows the high K dissolved value on the acid concentration of nitrate with 10-1M after the first 24 hours shaking between the two factors, with soluble K value 172.52 cmol/kg of L1M1 addition, 120.48 cmol/kg of L2M1 addition, and 188.13 cmol/kg of L3M1 addition. Adding Leucite grain and nitric acid concentrations have lower soil available K value at the time of incubation with a value that is lower than 0.30 cmol / kg (L0M0 – control of treatment). In stage of maximum vegetative, the additions of two factors have to increase the value of average soil available K was 0.30 cmol/kg on the L3M2. K absorption by plants has the highest average value of 0.73 mg/ kg on L3M3 Keyword: Leucite, Nitrite acid, potassium availability, potassium absorption, weatheringResearch in the Glass House of Agriculture Faculty of Sebelas Maret University have been made to study the effect of Leucite grain and nitric acid concentration against availability of potassium from Bengawan Solo Entisols made in April – September 2006. This research is a causal relationship functional research; the approach is done with variables factorial experiment using Complete Random Design (CRD) with 2 factors and 3 times repeated. First factor is adding the Leucite grain (L) consist of 4 stage, that is L0 (without Leucite), L1 (using 5 mesh of Leucite grain), L2 (using 30 mesh of Leucite grain) and L3 (using 80 mesh size of Leucite grain). Second is adding acid concentration of nitrate (M), consists of 4 stage that is M0 (without nitric acid), M1 (adding 0.1M of nitric acid), M2 (adding 0.2M of nitric acid), and M3 (adding 0,3M of nitric acid). The first shaken with second factor for 24 hours before applied to soil. Analysis of data is using Analysis of Variance and Duncan’s Multiple Range Test. Results of research shows the high K dissolved value on the acid concentration of nitrate with 10-1M after the first 24 hours shaking between the two factors, with soluble K value 172.52 cmol/kg of L1M1 addition, 120.48 cmol/kg of L2M1 addition, and 188.13 cmol/kg of L3M1 addition. Adding Leucite grain and nitric acid concentrations have lower soil available K value at the time of incubation with a value that is lower than 0.30 cmol / kg (L0M0 – control of treatment). In stage of maximum vegetative, the additions of two factors have to increase the value of average soil available K was 0.30 cmol/kg on the L3M2. K absorption by plants has the highest average value of 0.73 mg/ kg on L3M3 Keyword: Leucite, Nitrite acid, potassium availability, potassium absorption, weatherin
PENGARUH PUPUK KANDANG TERHADAP P-TERSEDIA PUPUK FOSFAT ALAM YANG DIINOKULASI BAKTERI PELARUT FOSFAT
Get PDFTitle : The Effect of Manure on Available-P of Phosphate Rock Fertilizer Inoculated with P-solubilizer Bacteria. Experiment conducted at Soil Biology Laboratory, Faculty of Agriculture UNS Surakarta. This experiment aimed to study the effect of manure on solubilising capacity of P-solubilizer bacteria on phosphate rock fertilizer. The experiment arranged in completely randomized design with two factors i.e. dosages of manure added and inoculums rates of P-solubilizer bacteria (PSB) (Bacillus megatherium var phosphaticum). The manure added were 0 g (K0), 250 g (K1), and 500 g (K2) per 5 kg phosphate rock fertilizer. While the PSB inoculums rates were 0 cell/g (B0), 5.105 cell/g (B1) and 10.105 cell/g of phosphate rock fertilizer. The variables analysed at 2, 4 and 6 weeks after incubation for available-P, pH, organic matter content and total PSB. Data analysed with F test and DMRT at 95 % level of significant. The result indicated that available-P of phosphate rock fertilizer was significantly affected by PSB inoculation rates, doses of manure and incubation time. Available-P increase coincided with increasing of PSB inoculums and manure rates as well as incubation time. Treatment combination of PSB at 10.105 cell/g and manure of 500 g/ 5 kg increase available-P up to 80.59 ppm (151.5 % of the control treatment) at the end incubation time. Keywords: Manure, Phosphate Rock Fertilizer, P-solubilizer BacteriaExperiment conducted at Soil Biology Laboratory, Faculty of Agriculture UNS Surakarta. This experiment aimed to study the effect of manure on solubilising capacity of P-solubilizer bacteria on phosphate rock fertilizer. The experiment arranged in completely randomized design with two factors i.e. dosages of manure added and inoculums rates of P-solubilizer bacteria (PSB) (Bacillus megatherium var phosphaticum). The manure added were 0 g (K0), 250 g (K1), and 500 g (K2) per 5 kg phosphate rock fertilizer. While the PSB inoculums rates were 0 cell/g (B0), 5.105 cell/g (B1) and 10.105 cell/g of phosphate rock fertilizer. The variables analysed at 2, 4 and 6 weeks after incubation for available-P, pH, organic matter content and total PSB. Data analysed with F test and DMRT at 95 % level of significant.
The result indicated that available-P of phosphate rock fertilizer was significantly affected by PSB inoculation rates, doses of manure and incubation time. Available-P increase coincided with increasing of PSB inoculums and manure rates as well as incubation time. Treatment combination of PSB at 10.105 cell/g and manure of 500 g/ 5 kg increase available-P up to 80.59 ppm (151.5 % of the control treatment) at the end incubation time.
Keywords: Manure, Phosphate Rock Fertilizer, P-solubilizer Bacteri
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
Pengaruh Pengkayaan Kompos Sampah Kota dengan Bakteri Penambat N-Bebas, Bakteri Pelarut Fosfat dan EM-4 terhadap Laju Dekomposisi dan Kualitas Pupuk
No full textN/
PENGARUH MACAM ATAP BEDENGAN DAN DOSIS PUPUK UREA TERHADAP PERTUMBUHAN BIBIT TEMBAKAU (Nicotiana tabacum L.)
No full textN/
KAJIAN TINGKAT DEGRADASI LAHAN DAN KEMAMPUAN LAHAN PADA USAHATANI LAHAN KERING BERBASIS TEMBAKAU DI SUB-DAS PROGO HULU
Get PDFTitle : The study of land capability and land degradation level on tobacco-based upland farming at Progo Hulu Sub-watershed. The recent and also the future problems for Indonesian concerning with agricultural environment resources are land degradation and water resources restrictiveness. Agricultural technique without awareness to concerning to soil and water conservation principles on steep and high rainfall area had caused severe erosion and land degradation at upland area of Progo Hulu sub-watershed. Land Degradation that promoted by erosion at Progo Hulu sub-watershed contributed negative effects at on-site and out-site area. The results showed that: (1) The degradation levels on upland farming area of Progo Hulu sub-watershed (7.398,54 ha) are classified as: low (708.71 ha or 9.58%), moderate (5,119.15 ha or 69.19%) and high (1,570.68 ha or 21.23%); (2) The land capability classes were dominated by Class IV (3,624.93 ha or 49.00%), followed with Class VI (2,488.82 ha or 33.64%), Class III (697.99 ha or 9.43%), Class V (450.73 ha or 6.09%), and Class VII (136.06 ha or 1.84%). Keywords: land capability, land degradation, Progo Hulu Sub-watershedThe recent and also the future problems for Indonesian concerning with agricultural environment resources are land degradation and water resources restrictiveness. Agricultural technique without awareness to concerning to soil and water conservation principles on steep and high rainfall area had caused severe erosion and land degradation at upland area of Progo Hulu sub-watershed. Land Degradation that promoted by erosion at Progo Hulu sub-watershed contributed negative effects at on-site and out-site area. The results showed that: (1) The degradation levels on upland farming area of Progo Hulu sub-watershed (7.398,54 ha) are classified as: low (708.71 ha or 9.58%), moderate (5,119.15 ha or 69.19%) and high (1,570.68 ha or 21.23%); (2) The land capability classes were dominated by Class IV (3,624.93 ha or 49.00%), followed with Class VI (2,488.82 ha or 33.64%), Class III (697.99 ha or 9.43%), Class V (450.73 ha or 6.09%), and Class VII (136.06 ha or 1.84%). Keywords: land capability, land degradation, Progo Hulu Sub-watershe
POTENSI EMISI N2O DARI BERBAGAI JENIS TANAH YANG DIBERI BAHAN OGANIK
Get PDFTitle : Potential Emission Of N2O from Various Types of Soil with Organic Material Addition. N2O is one of the greenhouse gases generated by agricultural activities which is currently highlighted. Amount of N2O is the least amount in the atmosphere, but it has a global warming potential 310 times compared to the global warming potential by CO2, and has a very long half-life time in the atmosphere is about 120-150 years old. Organic fertilization is considered one trigger for N2O emissions, but the other organic materials are needed by the soil as soil-forming material. Intensive research is needed to determine the effect of the organic material to N2O on various aspects including soil type, because Indonesia is rich in soil. Indonesia has 10 of the 12 soil types that exist throughout the world (Soil Taxonomy). This study aims to determine the N2O emissions in different types of soil which were variations of the addition of organic matter. This research was conducted with an experimental method using a completely randomized design.The main observation is the variable potential N2O emissions which analyzed by Soil Incubation method. The results showed variations of provision does not affect the potential of organic materials N2O emissions for 30 days. Soil types of the most releases N2O respectively are Alfisols, then Inseptisols and most minor releases N2O is Andisols.N/
PENGARUH KASCING DAN PUPUK ANORGANIK TERHADAP KETERSEDIAAN NITROGEN PADA ALFISOLS JUMANTONO DAN SERAPANNYA OLEH TANAMAN JAGUNG MANIS (Zea mays L. saccharata)
Get PDFTitle : Vermicompost and Inorganic Fertilizer Effect on Availability of Nitrogen at Alfisols Jumantono and Its Absorption in Sweet Corn (Zea mays L. saccharata). The purpose of this experiment is to know the effect of vermicompost and inorganic fertilizer on availability of nitrogen at Alfisols Jumantono and its absorption in sweet corn (Zea mays L. saccharata). This research was done from September 2007 until January 2008 in Sub district of Jumantono, Regency of Karanganyar, soil and plant tissue analysis was done in Laboratory of Chemical and Soil Fertility, Agriculture Faculty, Sebelas Maret University Surakarta. This research represents experimental research by using Randomized Completely Block Design (RCBD) factorial with two factors. First factor was vermicompost dosage and second factor was inorganic fertilizer dosage (urea, SP36, KCl). Factor I consisted of 3 level that is: K0 (without vermicompost), K1 (vermicompost 1.5 ton.ha-1), K2 (vermicompost 3 ton.ha-1). Factor II consisted of 3 level that is: A0 (without inorganic fertilizer), A1 (urea 100 kg.ha-1, SP36 50 kg.ha-1, and KCl 25 kg.ha-1), A2 (Urea 200 kg.ha-1, SP36 100 kg.ha-1, and KCl 50 kg.ha-1). From bolt of the factor obtained 9 treatment combination and each treatment combination repeated 3 times. Statistics analysis use F Test, Kruskal Wallis, DMRT, Mood Median, and Correlation. Research result indicates that there are interaction between vermicompost and inorganic fertilizer which improving availability of nitrogen at Alfisols and its absorption in sweet corn. Highest of N available by present of vermicompost 3 ton.ha-1 + urea 200 kg.ha-1, SP36 100 kg.ha-1, and KCl 50 kg.ha-1 that is 0.095%. Highest of N Absorption and N of plant tissue that is 0.714 g/plant and 1.39% shown by present of interaction between vermicompost 3 kg.ha-1 and without inorganic fertilizer. Highest of total N shown by present of urea 200 kg.ha-1, SP36 100 kg.ha-1, KCl 50 kg.ha-1 that is 0.30%. Keywords: Vermicompost, inorganic fertilizer, Alfisols, sweet corn, N availability, N absorptionThe purpose of this experiment is to know the effect of vermicompost and inorganic fertilizer on availability of nitrogen at Alfisols Jumantono and its absorption in sweet corn (Zea mays L. saccharata). This research was done from September 2007 until January 2008 in Sub district of Jumantono, Regency of Karanganyar, soil and plant tissue analysis was done in Laboratory of Chemical and Soil Fertility, Agriculture Faculty, Sebelas Maret University Surakarta. This research represents experimental research by using Randomized Completely Block Design (RCBD) factorial with two factors. First factor was vermicompost dosage and second factor was inorganic fertilizer dosage (urea, SP36, KCl). Factor I consisted of 3 level that is: K0 (without vermicompost), K1 (vermicompost 1.5 ton.ha-1), K2 (vermicompost 3 ton.ha-1). Factor II consisted of 3 level that is: A0 (without inorganic fertilizer), A1 (urea 100 kg.ha-1, SP36 50 kg.ha-1, and KCl 25 kg.ha-1), A2 (Urea 200 kg.ha-1, SP36 100 kg.ha-1, and KCl 50 kg.ha-1). From bolt of the factor obtained 9 treatment combination and each treatment combination repeated 3 times. Statistics analysis use F Test, Kruskal Wallis, DMRT, Mood Median, and Correlation. Research result indicates that there are interaction between vermicompost and inorganic fertilizer which improving availability of nitrogen at Alfisols and its absorption in sweet corn. Highest of N available by present of vermicompost 3 ton.ha-1 + urea 200 kg.ha-1, SP36 100 kg.ha-1, and KCl 50 kg.ha-1 that is 0.095%. Highest of N Absorption and N of plant tissue that is 0.714 g/plant and 1.39% shown by present of interaction between vermicompost 3 kg.ha-1 and without inorganic fertilizer. Highest of total N shown by present of urea 200 kg.ha-1, SP36 100 kg.ha-1, KCl 50 kg.ha-1 that is 0.30%.
Keywords: Vermicompost, inorganic fertilizer, Alfisols, sweet corn, N availability, N absorptio