Articles

Found 11 Documents
Search

PENERAPAN MODEL PEMBELAJARAN COOPERATIVE SCRIPT UNTUK MENINGKATKAN KEAKTIFAN SISWA DALAM PEMBELAJARAN PPKN DI MTSN 4 GUNUNGKIDUL Susilawati, Ani
Diksi Vol 26, No 1: DIKSI MARET 2018
Publisher : Faculty of Languages and Arts, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/diksi.v26i1.25433

Abstract

Abstract (Title: Application of Cooperative Script Learning Model to Improve the Activities of Students in PPKn Learning in MTsN 4 Gunungkidul). This study aims to describe the application of cooperative script learning models to increase the activity of students in learning PPKn material position and function of the Pancasila class VIIIA MTsN 4 Gunungkidul. The population of this study was all students of class VIII A MTsN 4 Gunungkidul in Gunungkidul Regency with a total of 34 children. All members of the population are used as research samples. Data collection is done by observation. This observation is carried out to monitor the process and impact of learning needed to organize corrective measures to be more effective and efficient. Observation is focused on the process and results of the learning action along with the events that surround it. The results of the study showed that students' activities in learning had shown high participation, students were able to build cooperation in groups to solve problems faced. Students are able to solve problems, answer questions, present work results well. This shows the activity of students towards subjects is quite high with an average of 55% before the action becomes 76% in the first cycle and becomes 87% in the second cycle. Students' responses to the subjects of Education Authority turned out to be influenced by the learning model used by the teacher. This can be seen from the results which show an increase from the first cycle of 76.9% to 92.3% in the second cycle.Keywords: activity, cooperatif script, participation, Pancasila
The Role of Organic Matter to Improve Phosphate Fertilization Efficiency on Acid Sulphate Soil SUSILAWATI, ANI; FAHMI, ARIFIN
Jurnal Sumberdaya Lahan Vol 5, No 01 (2011): Juli 2011
Publisher : Indonesian Center for Agriculture Land Resource Development

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The large amount of acid sulphate soil area may be potential for agricultural development. Low soil pH, low to very low P availability and high Fe concentration are the dominant characteristics of acid sulphate soils. Low availability of P in acid sulphate soil may due to fixation process by iron and aluminum. Low N, low available K, and potential toxicityof Fe and Al are other characteristics of acid sulphate soil. Optimum agricultural management practices are required to leach the excess of Fe2+ and to maximize the P availability in order to obtain favourable conditions for rice growth. Rice straw application is part of technology for acid sulphate soil productivity improvement, a simple tecnology that sustainable and environmental friendly. Organic matter being a source of nutrients has also an important role in relation to P sorption capacity of soils through Fe chelation processes.
PENGEMBANGAN TEKNOLOGI UNTUK PENGELOLAAN LAHAN RAWA PASANG SURUT BERKELANJUTAN Susilawati, Ani; Wahyudi, Erwan; Minsyah, Nurimdah
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol 6, No 1 (2017): JLSO
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (496.461 KB) | DOI: 10.33230/JLSO.6.1.2017.295

Abstract

Susilawati et a, 2017. Technology Development for Sustainable Tidal Swamp Land Management. JLSO 6(1):87-94.Tidal land is very potential to be developed as food gardens and agriculture of the future of Indonesia considering (1) productivity is still low, (2) potential land is still wide, (3) indices of plantation (IP) is still low, (4) degraded land potential , (5) the pattern of food production in tidal land is complementary to the pattern of food production in Java, (6) the competition for land use for non-agricultural purposes is relatively low, and (7) the availability of production technology of various commodities. Tidal land is an area whose water availability is affected by the movement of water on the surface of the river due to the movement of the moon, the land is included in the sub-optimal land category, ie the land that has many problems and needs to be overcome in order to provide benefits. The problems are water problems and soil chemical characteristics that have not provided maximum support for agricultural cultivation system. Therefore, priority should be given to technological development that is technically relevant to the characteristics of the land, economically affordable to local farmers, and expected to be in tune with the preferences and socio-cultural of local communities. Two approaches that can be parallel and interactively carried out are [1] optimizing the physical, chemical, and (micro) properties of soil biology along with optimizing the management of water resources to be eff ective and more efficient; and [2] appropriate selection of commodity types and development of adaptively specific varieties for each suboptimal land characteristic.
TEKNOLOGI PENURUNAN KADAR Fe AIR SAWAH PASANG SURUT MELALUI PENGGUNAAN BIOFILTER PURUN TIKUS (Eleocharis dulcis) [Fe Levels Decline Technology of Water Tidal Rice Field by Using Purun Tikus (Eleocharis Dulcis) Biofilter ] Susilawati, Ani; Indrayati, Linda
BERITA BIOLOGI Vol 15, No 1 (2016)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3298.088 KB) | DOI: 10.14203/beritabiologi.v15i1.2852

Abstract

Water management in acid sulfate soil can increase the productivity of land and crops, but the element of poison leaching into drainage channels gives negative impact on the environment. One approach to improve water quality is to filter or absorb the poison element. Purun tikus (Eleocharis dulcis) can act as a biofilter to improve water quality. The purpose of this study is to get biofilter technology (purun tikus) to reduce the levels of Fe, SO4 and increase the pH of the water. The experiment was conducted in greenhouse of Indonesian Swampland Agriculture Research Institute, Banjarbaru, South Kalimantan. Treatment was arranged in a factorial randomized block design with three replications.The first factor was the density of the biofilter ,consisted of: 1) 25%, 2) 50%, and 3) 100%, The second factor was the length of contact of water with biofilter that consisted of: 1). 12 hours, 2) 24 hours, and 3) 36 hours. The results showed that the density of purun tikus 50% in greenhouse experiments can decreased the concentration of Fe at 76.5%.
PENGARUH PERENDAMAN BENIH DALAM CaO DAN PEMUPUKAN P DAN K TERHADAP PENGENDALIAN KERACUNAN BESI PADA TANAMAN PADI DI LAHAN SULFAT MASAM POTENSIAL Susilawati, Ani; Khairullah, Izhar
BERITA BIOLOGI Vol 10, No 4 (2011)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (363.057 KB) | DOI: 10.14203/beritabiologi.v10i4.757

Abstract

Tidal land large enough sour sulfate and the potential for agricultural expansion. Obstacles encountered primarily stress iron poisoning. It has the potential to cause a decline in rice yield research aims to study the effect of the influence of seed treatment and fertilizer P and K to control iron toxicity in acidic sulfate potential land. This research was carried out in KP Belandean on MK 2007. Randomized block design with 3 replications. Rice varieties used were Batanghari, planted on plot measuring 4 mx 9 m with a spacing of 20 cm x 20 cm. Package combined treatment of seeds and fertilizer P and K: 1. (25-90-75), 2. (50-90-75), 3. (75-90-75), 4. (100-90-75), 5. (125-90-75), 6. (75-30-75), 7. (75-60-75), 8. (75-120-75), 9. (75-150-75), 10. (75-90-25), 11. (75-90-50), 12. (75-90-100), 13. (75-90-125), 14. (0-90-75), 15. (0-0-0) kg / ha% CaO-kg / ha P2O5-K2O. The result showed that by giving a dose of phosphate fertilizer 90 kg/ha P2O5 and potassium at a dose of 100-125 kg/ha K2O CaO combined with the provision of 75 % of the weight of the seed, is the combination to control iron poisoning.
CHANGES OF SOIL CHEMICAL PROPERTIES DURING RICE STRAW DECOMPOSITION IN DIFFERENT TYPES OF ACID SULPHATE SOILS Hairani, Anna; Susilawati, Ani
Journal of Tropical Soils Vol 18, No 2: May 2013
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2013.v18i2.99-103

Abstract

Organic residues often exhibit different physico-chemical properties and affect the soil ecosystem in different ways. Hence, the study of their impact on soil is essential to benefit from their potential as amendments and to avoid adverse environmental effects. It is required to study the role of rice straw in the changes of soil properties during decomposition processes in the rice field. The research was conducted on potential acid sulphate soil (PASS) and actual acid sulphate soil (AASS) in the glass house. Soil pH, Fe2+, organic-Fe, total N and available P were observed at 2, 4, 6 and 8 weeks after planting (WAP). The result showed that rice straw application : (1) decreased soil pH of PASS and increase soil pH of AASS; (2) tended to increase Fe2+ both in PASS and AASS; (3) stimulated the organic-Fe concentration in AASS was higher than organic-Fe concentration in PASS; (4) had no different effect in total N and decreased P concentration in the both of soil during observation. P concentration on PASS was lower than on AASS.Keywords: Decomposition, rice straw, soil chemical properties, soil type[How to Cite: Hairani A and A Susilawati. 2013.Changes of Soil Chemical Properties during Rice Straw Decomposition in Different Types of Acid Sulphate Soils. J Trop Soils 18 (2): 99-103. Doi: 10.5400/jts.2013.18.2.99]REFERENCESBalai Penelitian Tanah. 2005. Analisis Kimia Tanah, Tanaman, Air dan Pupuk.  Badan Penelitian dan Pengembangan Pertanian. Departemen Pertanian.  Bogor. p: 136 (in Indonesian).Banach AM, K Banach, RCJH Peters,  RHM Jansen, EJW Visser, Z Stepniewska, JGM Roelofs and LPM Lamers.  2009.  Effects of long-term flooding on biogeochemistry and vegetation development in floodplains; a mesocosm experiment to study interacting effects of land use and water quality.  Biogeosciences  6: 1325-1339. doi:10.5194/bg-6-1325-2009.Bonneville S.  2005.  Kinetics of Microbial Fe (III) Oxyhydroxide Reduction : The Role of Mineral Properties.  [Dissertation].  Department of Earth Sciences-Geochemistry, Faculty of Geosciences, Utrecht University. The Netherlands. 117 p.Cayuela ML, T Sinicco and C Mondini.  2009.  Mineralization dynamics and biochemical properties during initial decomposition of plant and animal residues in soil. App Soil Ecol  41: 118 -127.De-Campos AB, AL Mamedov and C Huang. 2009. Short-term reducing conditions decrease soil aggregation. Soil Sci Soc Am J  73: 550-559.Dent D. 1986. Acid Sulphate Soils: A Baseline for Research and Development. International Land Reclamation Institute Pub. 39. Wageningen, The Netherlands. 204 p.Dobermann A and T Fairhurst.  2000.  Rice: Nutrient Disorders and Nutrient Management.  International Rice Research Institute.  Makati city, The Fhillipines.  191 p. Fahmi A, B Radjagukguk and BH Purwanto.  2009.  Kelarutan posfat dan ferro pada tanah sulfat masam yang diberi bahan organik jerami padi.  J Tanah Trop 14: 119 -125 (in Indonesian).Fahmi A. 2010.  Pengaruh pemberian jerami padi terhadap pertumbuhan tanaman padi (Oryza sativa ) di tanah sulfat masam.  J Berita Biol 10:  7-14 (in Indonesian). Havlin JL, JD Beaton, SL Tisdale and WL Nelson. 2005. Soil Fertility and Fertilizers, an introduction to nutrient management. 7th edition. Prentice Hall. 515 p.Indrayati L and A  Jumberi. 2002.  Pengelolaan jerami padi pada pertanaman padi di lahan pasang surut sulfat masam.  In: Pengelolaan Tanaman Pangan Lahan Rawa.  Badan Penelitian dan Pengembangan Pertanian, Puslitbang Tanaman Pangan, Bogor. Kirk G.  2004.  The Biogeochemistry of Submerged Soils. John Willey and Sons. Chicester, England.  291 p.Kongchum M.  2005.  Effect of  Plant Residue and Water Management Practices on Soil Redox Chemistry, Methane Emission and Rice Productivity.   [Dissertation].  Graduate Faculty of the Louisiana State University.  USA.  201 pKyuma K.  2004.  Paddy Soil Science.  Kyoto University Press dan Trans Pacific Press.  Melbourne.  Australia. 279 p.Liang X, J Liu, Y Chen, H Li, Y Ye, Z Nie, M Su and Z Xu.  2010.  Effect of pH on the release of soil colloidal phosphorus.  J Soils Sediments 10: 1548-1556.Lindsay WL. 1979.  Chemical Equilibria in Soils. John Willey & Sons. New York. 449 p.Liu C, M Chen and F Li. 2010. Fe(III) reduction in soils from South China. In: RJ Gilkes and N Prakongkep (eds). Soil Solutions for a Changing World. Soil minerals and contaminants, 19th World Congress of Soil Science. Brisbane, Australia, pp.70-73.McIntyre RES, MA Adams, DJ Ford and PF Grierson.  2009.  Rewetting and litter addition influence mineralization and microbial communities in soils from a semi-arid intermittent stream.  Soil Biol Biochem 41: 92-101.Morris AJ. 2011. Phosphate Binding to Fe and Al in Organic Matter as Affected by Redox Potential and pH. [Dissertation]. Soil Science, North Carolina  State University, Raleigh, North Carolina, USA. 229 p.Olomu MO, GJ Racz and CM Cho.  1973.  Effect of flooding on the Eh, pH, and concentrations of Fe and Mn in several manitoba soils.  Soil Sci Soc Am J  37: 220 -224.Ponnamperuma FN. 1984.  Effects of flooding on soils.  In: T Kozlawski (ed).  Flooding and Plant Growth: Physical Ecology. A Series Monographs, Text and Treatises.  Academic Press Inc.  Harcourt Brace Javanovich Publisher, USA, pp. 10-45. Reddy KR and RD Delaune.  2008. The Biogeochemistry of Wetland; Science and Application. CRC Press.  New York.Rukhsana F, C Butterly, J Baldock and C Tang.  2010. Model carbon compounds differ in their effects on pH change of soils with different initial pH. In: RJ Gilkes and N Prakongkep (eds). 19th World Congress of Soil Science, Soil Solutions for a Changing World, 1 ? 6 August 2010, Brisbane, Australia,  pp. 160-163.Syahrawat KL.  2006.  Organic matter and mineralizable nitrogen relationships in wetland rice soils.  Commun Soil Sci Plant Anal 37: 787-796. Wagai R and LM Mayer.  2007.  Sorptive stabilization of organik matter in soils by hydrous iron oxides.  Geochim Cosmochim Act 71: 25-35.Watanabe I.  1984.  Anaerobic decomposition of organic matter in flooded rice soils. In: Organic Matter and Rice. Intenational Rice Research Institute.  Los Banos Laguna, Philippines,  pp. 237-258.Wickham TH and VP Singh. 1978.  Water movement through wet soils. Soil and Rice.  International Rice Research Institute. Los Baños, Philippines, pp. 337- 358.
BIOLEACHING UNTUK MENINGKATKAN PRODUKTIVITAS LAHAN SULFAT MASAM AKTUAL UNTUK TANAMAN PADI Maftu’ah, Eni; Susilawati, Ani
BERITA BIOLOGI Vol 17, No 3 (2018)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5395.86 KB) | DOI: 10.14203/beritabiologi.v17i3.2922

Abstract

Technology of microbial utilization to accelerate the oxidation of pyrite followed by leaching (bioleaching) has the potential to resolve problems in land management of actual acid sulphate soil. The research aims to obtain a bioleaching technology package that can improve the productivity of the actual acid sulfate soil. The experiment was conducted on tidal swamp land that has soil type of actual acid sulfate at Wana Raya sub-district, district Batola, South Kalimantan, in July - November, 2014. The study was designed by using strip plot with three replications. The treatment consisted of two factors, namely application of an oxidizing microbial pyrite and leaching amount (intensity). The main plot consisted of (P0) without leacing (naturally), (P1) six times leaching , (P2) eight times leaching, and (P3) 12 times leaching. Subplot consisted of (M0) without oxidizing microbial pyrite, (M1) with oxidizing microbial plant used in this study is Inpara 3 of rice variety. Observations were made on soil pH, oxidizing bacteria pyrite, growth of rice plants (plant height and number of tillers) and rice yield. The results showed that the main problem of actual acid sulfate land studied is a high soil acidity (pH of 3.44). Influ-ence of leaching was greater than microbial application on crop yields. Application of the pyrite oxidizing bacterial and leaching eight times gave the best influence on the growth and yield of rice plants.
THE ROLE OF ORGANIC MATTER TO IMPROVE PHOSPHATE FERTILIZATION EFFICIENCY ON ACID SULPHATE SOIL SUSILAWATI, ANI; FAHMI, ARIFIN
Jurnal Sumberdaya Lahan Vol 5, No 1 (2011)
Publisher : Indonesian Center for Agriculture Land Resource Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jsdl.v5n01.2011.%p

Abstract

The large amount of acid sulphate soil area may be potential for agricultural development. Low soil pH, low to very low P availability and high Fe concentration are the dominant characteristics of acid sulphate soils. Low availability of P in acid sulphate soil may due to fixation process by iron and aluminum. Low N, low available K, and potential toxicityof Fe and Al are other characteristics of acid sulphate soil. Optimum agricultural management practices are required to leach the excess of Fe2+ and to maximize the P availability in order to obtain favourable conditions for rice growth. Rice straw application is part of technology for acid sulphate soil productivity improvement, a simple tecnology that sustainable and environmental friendly. Organic matter being a source of nutrients has also an important role in relation to P sorption capacity of soils through Fe chelation processes.
PENGARUH PERENDAMAN BENIH DALAM CAO DAN PEMUPUKAN P DAN K TERHADAP PENGENDALIAN KERACUNAN BESI PADA TANAMAN PADI DI LAHAN SULFAT MASAM POTENSIAL Susilawati, Ani; Khairullah, Izhar
BERITA BIOLOGI Vol 10, No 4 (2011)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v10i4.757

Abstract

Tidal land large enough sour sulfate and the potential for agricultural expansion. Obstacles encountered primarily stress iron poisoning. It has the potential to cause a decline in rice yield research aims to study the effect of the influence of seed treatment and fertilizer P and K to control iron toxicity in acidic sulfate potential land. This research was carried out in KP Belandean on MK 2007. Randomized block design with 3 replications. Rice varieties used were Batanghari, planted on plot measuring 4 mx 9 m with a spacing of 20 cm x 20 cm. Package combined treatment of seeds and fertilizer P and K: 1. (25-90-75), 2. (50-90-75), 3. (75-90-75), 4. (100-90-75), 5. (125-90-75), 6. (75-30-75), 7. (75-60-75), 8. (75-120-75), 9. (75-150-75), 10. (75-90-25), 11. (75-90-50), 12. (75-90-100), 13. (75-90-125), 14. (0-90-75), 15. (0-0-0) kg / ha% CaO-kg / ha P2O5-K2O. The result showed that by giving a dose of phosphate fertilizer 90 kg/ha P2O5 and potassium at a dose of 100-125 kg/ha K2O CaO combined with the provision of 75 % of the weight of the seed, is the combination to control iron poisoning.
TEKNOLOGI PENURUNAN KADAR FE AIR SAWAH PASANG SURUT MELALUI PENGGUNAAN BIOFILTER PURUN TIKUS (ELEOCHARIS DULCIS) Susilawati, Ani; Indrayati, Linda
BERITA BIOLOGI Vol 15, No 1 (2016)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v15i1.2852

Abstract

Water management in acid sulfate soil can increase the productivity of land and crops, but the element of poison leaching into drainage channels gives negative impact on the environment. One approach to improve water quality is to filter or absorb the poison element. Purun tikus (Eleocharis dulcis) can act as a biofilter to improve water quality. The purpose of this study is to get biofilter technology (purun tikus) to reduce the levels of Fe, SO4 and increase the pH of the water. The experiment was conducted in greenhouse of Indonesian Swampland Agriculture Research Institute, Banjarbaru, South Kalimantan. Treatment was arranged in a factorial randomized block design with three replications.The first factor was the density of the biofilter ,consisted of: 1) 25%, 2) 50%, and 3) 100%, The second factor was the length of contact of water with biofilter that consisted of: 1). 12 hours, 2) 24 hours, and 3) 36 hours. The results showed that the density of purun tikus 50% in greenhouse experiments can decreased the concentration of Fe at 76.5%.