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Hubungan antara Ketersediaan Hara Tanah dengan Cemaran Getah Kuning pada Buah Manggis Martias, -; Poerwanto, R; Anwar, S; Hidayati, R
Jurnal Hortikultura Vol 22, No 2 (2012): Juni 2012
Publisher : Indonesian Center for Horticultural Research and Development

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Abstract

ABSTRAK. Cemaran getah kuning merupakan masalah utama yang menyebabkan rendahnya kualitas buah manggis untuk ekspor. Ketersediaan hara di dalam tanah diduga berpengaruh terhadap cemaran getah kuning. (Tambahkan informasi pada level konsentrasi hara Ca dan Mn yang bagaimana yang berpengaruh terhadap frekuensi/insidensi getah kuning pada manggis).  Penelitian hubungan antara ketersediaan hara tanah dengan cemaran getah kuning pada buah manggis dilakukan di Desa Karacak, Barengkok, Garogek, dan Pusaka Mulia (Jawa Barat),  Koto Lua, Baringin, Pakandangan, Padang Laweh, Lalan (Sumatera Barat), dan Sukarame (Lampung), dari bulan  Desember 2009 sampai Juli 2011 (Perlu ditambahkan informasi yang jelas perbedaan lokasi yang dipilih apakah merepresentasikan adanya perbedaan yang mencolok kasus cemaran getah kuning manggis, sehingga pembaca bisa membaca alasan penentuan lokasi tersebut, mengingat cemaran getah kuning menjadi factor penting penelitian ini). Lokasi penelitian di tingkat desa ditentukan dari hasil wawancara menggunakan teknik purposive sampling dengan pedagang pengumpul di tingkat kecamatan dan desa. Pada setiap lokasi dari 10 sentra produksi yang terpilih, ditentukan 10 tanaman yang representatif  untuk diamati, setiap tanaman diambil 100 buah sampel. Buah manggis yang diamati untuk seluruh lokasi mencapai 10.000 buah (1.000 buah untuk setiap lokasi). Sampel tanah diambil dari zona perakaran pada masing-masing pohon serta dianalisis sifat kimia dan ketersediaan hara tanahnya. Hasil penelitian menunjukkan bahwa cemaran getah kuning pada buah manggis secara langsung dikendalikan oleh ketersediaan Ca dan Mn dalam tanah. Ketersediaan K, P, Mg, Cu, Zn, dan B dalam tanah secara tidak langsung berpengaruh terhadap cemaran getah kuning (Mekanismenya bagaimana? Perlu dijelaskan). Kalsium berperan mengeliminasi, sedangkan Mn menginduksi cemaran getah kuning pada aril (daging buah) maupun kulit buah manggis. Hasil penelitian ini dapat digunakan sebagai landasan untuk mengendalikan cemaran getah kuning pada buah manggis.ABSTRACT. Martias, Poerwanto, R,  Anwar, S, and Hidayati, R 2012. Relationship between Nutrient Availability of Soil with Yellow Sap Contamination on Mangosteen Fruits. Yellow sap contamination on mangosteen fruits is a major problem that causes poor quality on mangosteen fruits for export. Soil nutrients availability would  be expected influence directly and indirectly in eliminating or inducing yellow sap contamination. Research relationship between nutrients availability with yellow sap contamination on mangosteen fruits was  done in some mangosteen production center areas in the Village Karacak, Barengkok, Garogek, and Pusaka Mulia (West Java), Koto Lua, Baringin, Pakandangan, Padang Laweh, and Lalan (West Sumatera), and Sukarame (Lampung), from December 2009 to July 2011. Research sites at the village level were determined by interviewing traders at district and village levels using purposive sampling technique. At each location of 10 from center production that was selected, determined 10 plants representative to observe, each plant taken 100 fruits sample. Mangosteen fruits were observed for all sites reach 10 thousand pieces (1,000 pieces for each location). Soil samples were taken at the root zone of each tree and analyzed the chemical properties and soil nutrient availability. The results showed that the yellow sap contamination of mangosteen fruits was directly controlled by the availability of Ca and Mn  in the soil. The availability of K, P, Mg, Cu, Zn, and B in the soil indirectly affected yellow sap contamination. Calcium played to eliminate and Mn contributed to induces yellow sap contamination, either aryl and the skin of mangosteen fruits. The results of  this study can be used as the basis for the study contaminat control yellow sap of the  mangosteen fruits.
Penetapan Rekomendasi Pemupukan N, P, dan K Tanaman Duku Berdasarkan Analisis Daun Hernita, Desi; Poerwanto, Rhoedy; Susila, Anas D; Anwar, S
Jurnal Hortikultura Vol 22, No 4 (2012): Desember
Publisher : Indonesian Center for Horticultural Research and Development

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Abstract

Duku mempunyai perakaran yang dalam, sehingga sulit untuk memperoleh sampel tanah yang representatif pada daerah tersebut, sehingga lebih tepat menggunakan analisis daun. Status hara daun merupakan gambaran status hara aktual dalam tanah. Penelitian bertujuan untuk menentukan kategori status hara N, P, dan K, serta rekomendasi pemupukan optimum berdasarkan status hara tersebut pada tanaman duku. Penelitian dilaksanakan di Kecamatan Kumpeh Ulu, Kabupaten Muaro, Jambi pada Bulan Desember 2008 sampai dengan April 2012.  Rancangan penelitian menggunakan acak kelompok dengan lima ulangan.  Perlakuan dosis pupuk N (0, 400, 800, 1.200, dan 1.600 g N) , P (0, 500, 1.000, 1.500, dan 2.000 g P2O5), K (0,600, 1.200, 1.800, dan 2.400 g K2O/tanaman/tahun). Hasil penelitian menunjukkan bahwa status hara N sangat rendah (< 1,81%), rendah (1,81 ≤ N < 2,82%), dan sedang (≥ 2,82%), status hara P sangat rendah (< 0,09%), rendah (0,09 ≤ P < 0,17%), dan sedang (≥ 0,17%), serta status hara K sangat rendah (< 1,16%), rendah (1,16 ≤ K < 2,19%), dan sedang (≥ 2,19%).  Rekomendasi pemupukan pada tanaman duku untuk status hara sangat rendah yaitu 858 g N, 1.770 g P2O5, dan 1.900 g K2O/tanaman/tahun, untuk status hara rendah, 588 g N, 1.335 g P2O5, dan 1.107 g K2O/tanaman/tahun, sedangkan berdasarkan pendekatan multinutrien 920 g N, 1.565 g P2O5, dan 1.488 g K2O/tanaman/tahun (biaya produksi terendah). Rekomendasi pemupukan N, P, dan K berdasarkan analisis daun dapat diterapkan pada pertanaman duku di Indonesia dan meningkatkan produksi serta kualitas buah duku. Duku has been deep roots making it difficult to obtain a representative sample of soil at the root zone, so the more appropriate used of leaf analysis. Leaf nutrient status was picture of the actual nutrient status of the soil. The aimed of this study was to determine leaf N, P, K level category and recommendation study determine the optimum fertilizer rate for each nutrient level category on duku plant. The experiment was conducted at Kumpeh Ulu District, Muaro Jambi Regency, in Jambi Province, from December 2008 to April 2012. Each treatments were arranged in randomized block design with five replications. The treatments were N (0, 400, 800, 1,200, 1,600 g N/plant/year), P (0, 500, 1,000, 1,500, 2,000 g P2O5/plant/year), and K (0, 600, 1,200, 1,800, 2,400 g K2O/plant/year). The results showed that leaf nutrient status of N was very low (< 1.81%),  low (1.81 ≤ N < 2.82%), and medium (≥ 2.82%), status of P was very low (< 0.09%), low (0.09 ≤ P < 0.17%), and medium (≥ 0.17%); status of K was very low (< 1.16%), low (1.16 ≤ K < 2.19%), and medium (≥ 2.19%).  Fertilizer recommendation  rate on duku plant for very low nutrient status were 858 g N, 1,770 g P2O5, and 1,900 g K2O/plant/year, low nutrient status were 588 g N, 1,335 g P2O5, and 1,107 g K2O/plant/year, multinutrient approach were 920 g N, 1,565 g P2O5, dan 1,488 g K2O/plant/year (lower production cost). Recommendation of fertilizer N, P, and K based on leaves analysis can be applied on duku in Indonesia and increase production and fruit quality of duku.
Penetapan Rekomendasi Pemupukan N, P, dan K Tanaman Duku Berdasarkan Analisis Daun Hernita, Desi; Poerwanto, Rhoedy; Susila, Anas D; Anwar, S
Jurnal Hortikultura Vol 22, No 4 (2012): Desember 2012
Publisher : Indonesian Center for Horticulture Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (938.943 KB) | DOI: 10.21082/jhort.v22n4.2012.p376-384

Abstract

Duku mempunyai perakaran yang dalam, sehingga sulit untuk memperoleh sampel tanah yang representatif pada daerah tersebut, sehingga lebih tepat menggunakan analisis daun. Status hara daun merupakan gambaran status hara aktual dalam tanah. Penelitian bertujuan untuk menentukan kategori status hara N, P, dan K, serta rekomendasi pemupukan optimum berdasarkan status hara tersebut pada tanaman duku. Penelitian dilaksanakan di Kecamatan Kumpeh Ulu, Kabupaten Muaro, Jambi pada Bulan Desember 2008 sampai dengan April 2012.  Rancangan penelitian menggunakan acak kelompok dengan lima ulangan.  Perlakuan dosis pupuk N (0, 400, 800, 1.200, dan 1.600 g N) , P (0, 500, 1.000, 1.500, dan 2.000 g P2O5), K (0,600, 1.200, 1.800, dan 2.400 g K2O/tanaman/tahun). Hasil penelitian menunjukkan bahwa status hara N sangat rendah (< 1,81%), rendah (1,81 ≤ N < 2,82%), dan sedang (≥ 2,82%), status hara P sangat rendah (< 0,09%), rendah (0,09 ≤ P < 0,17%), dan sedang (≥ 0,17%), serta status hara K sangat rendah (< 1,16%), rendah (1,16 ≤ K < 2,19%), dan sedang (≥ 2,19%).  Rekomendasi pemupukan pada tanaman duku untuk status hara sangat rendah yaitu 858 g N, 1.770 g P2O5, dan 1.900 g K2O/tanaman/tahun, untuk status hara rendah, 588 g N, 1.335 g P2O5, dan 1.107 g K2O/tanaman/tahun, sedangkan berdasarkan pendekatan multinutrien 920 g N, 1.565 g P2O5, dan 1.488 g K2O/tanaman/tahun (biaya produksi terendah). Rekomendasi pemupukan N, P, dan K berdasarkan analisis daun dapat diterapkan pada pertanaman duku di Indonesia dan meningkatkan produksi serta kualitas buah duku. Duku has been deep roots making it difficult to obtain a representative sample of soil at the root zone, so the more appropriate used of leaf analysis. Leaf nutrient status was picture of the actual nutrient status of the soil. The aimed of this study was to determine leaf N, P, K level category and recommendation study determine the optimum fertilizer rate for each nutrient level category on duku plant. The experiment was conducted at Kumpeh Ulu District, Muaro Jambi Regency, in Jambi Province, from December 2008 to April 2012. Each treatments were arranged in randomized block design with five replications. The treatments were N (0, 400, 800, 1,200, 1,600 g N/plant/year), P (0, 500, 1,000, 1,500, 2,000 g P2O5/plant/year), and K (0, 600, 1,200, 1,800, 2,400 g K2O/plant/year). The results showed that leaf nutrient status of N was very low (< 1.81%),  low (1.81 ≤ N < 2.82%), and medium (≥ 2.82%), status of P was very low (< 0.09%), low (0.09 ≤ P < 0.17%), and medium (≥ 0.17%); status of K was very low (< 1.16%), low (1.16 ≤ K < 2.19%), and medium (≥ 2.19%).  Fertilizer recommendation  rate on duku plant for very low nutrient status were 858 g N, 1,770 g P2O5, and 1,900 g K2O/plant/year, low nutrient status were 588 g N, 1,335 g P2O5, and 1,107 g K2O/plant/year, multinutrient approach were 920 g N, 1,565 g P2O5, dan 1,488 g K2O/plant/year (lower production cost). Recommendation of fertilizer N, P, and K based on leaves analysis can be applied on duku in Indonesia and increase production and fruit quality of duku.
Hubungan antara Ketersediaan Hara Tanah dengan Cemaran Getah Kuning pada Buah Manggis Martias, -; Poerwanto, R; Anwar, S; Hidayati, R
Jurnal Hortikultura Vol 22, No 2 (2012): Juni 2012
Publisher : Indonesian Center for Horticulture Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (651.98 KB) | DOI: 10.21082/jhort.v22n2.2012.p111-119

Abstract

ABSTRAK. Cemaran getah kuning merupakan masalah utama yang menyebabkan rendahnya kualitas buah manggis untuk ekspor. Ketersediaan hara di dalam tanah diduga berpengaruh terhadap cemaran getah kuning. (Tambahkan informasi pada level konsentrasi hara Ca dan Mn yang bagaimana yang berpengaruh terhadap frekuensi/insidensi getah kuning pada manggis).  Penelitian hubungan antara ketersediaan hara tanah dengan cemaran getah kuning pada buah manggis dilakukan di Desa Karacak, Barengkok, Garogek, dan Pusaka Mulia (Jawa Barat),  Koto Lua, Baringin, Pakandangan, Padang Laweh, Lalan (Sumatera Barat), dan Sukarame (Lampung), dari bulan  Desember 2009 sampai Juli 2011 (Perlu ditambahkan informasi yang jelas perbedaan lokasi yang dipilih apakah merepresentasikan adanya perbedaan yang mencolok kasus cemaran getah kuning manggis, sehingga pembaca bisa membaca alasan penentuan lokasi tersebut, mengingat cemaran getah kuning menjadi factor penting penelitian ini). Lokasi penelitian di tingkat desa ditentukan dari hasil wawancara menggunakan teknik purposive sampling dengan pedagang pengumpul di tingkat kecamatan dan desa. Pada setiap lokasi dari 10 sentra produksi yang terpilih, ditentukan 10 tanaman yang representatif  untuk diamati, setiap tanaman diambil 100 buah sampel. Buah manggis yang diamati untuk seluruh lokasi mencapai 10.000 buah (1.000 buah untuk setiap lokasi). Sampel tanah diambil dari zona perakaran pada masing-masing pohon serta dianalisis sifat kimia dan ketersediaan hara tanahnya. Hasil penelitian menunjukkan bahwa cemaran getah kuning pada buah manggis secara langsung dikendalikan oleh ketersediaan Ca dan Mn dalam tanah. Ketersediaan K, P, Mg, Cu, Zn, dan B dalam tanah secara tidak langsung berpengaruh terhadap cemaran getah kuning (Mekanismenya bagaimana? Perlu dijelaskan). Kalsium berperan mengeliminasi, sedangkan Mn menginduksi cemaran getah kuning pada aril (daging buah) maupun kulit buah manggis. Hasil penelitian ini dapat digunakan sebagai landasan untuk mengendalikan cemaran getah kuning pada buah manggis.ABSTRACT. Martias, Poerwanto, R,  Anwar, S, and Hidayati, R 2012. Relationship between Nutrient Availability of Soil with Yellow Sap Contamination on Mangosteen Fruits. Yellow sap contamination on mangosteen fruits is a major problem that causes poor quality on mangosteen fruits for export. Soil nutrients availability would  be expected influence directly and indirectly in eliminating or inducing yellow sap contamination. Research relationship between nutrients availability with yellow sap contamination on mangosteen fruits was  done in some mangosteen production center areas in the Village Karacak, Barengkok, Garogek, and Pusaka Mulia (West Java), Koto Lua, Baringin, Pakandangan, Padang Laweh, and Lalan (West Sumatera), and Sukarame (Lampung), from December 2009 to July 2011. Research sites at the village level were determined by interviewing traders at district and village levels using purposive sampling technique. At each location of 10 from center production that was selected, determined 10 plants representative to observe, each plant taken 100 fruits sample. Mangosteen fruits were observed for all sites reach 10 thousand pieces (1,000 pieces for each location). Soil samples were taken at the root zone of each tree and analyzed the chemical properties and soil nutrient availability. The results showed that the yellow sap contamination of mangosteen fruits was directly controlled by the availability of Ca and Mn  in the soil. The availability of K, P, Mg, Cu, Zn, and B in the soil indirectly affected yellow sap contamination. Calcium played to eliminate and Mn contributed to induces yellow sap contamination, either aryl and the skin of mangosteen fruits. The results of  this study can be used as the basis for the study contaminat control yellow sap of the  mangosteen fruits.
The Growth, Yield and Quality of Elephant Grass (Pennisetum purpureum) Spesific Toleran of Acid Soils by Mutagenesis with Ethylmethane Sulfonate Munasik, Munasik; Sutrisno, CI; Anwar, S; Prayitno, CH
ANIMAL PRODUCTION Vol 14, No 2 (2012): May
Publisher : Universitas Jenderal Soedirman, Faculty of Animal Science, Purwokerto-Indonesia

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Abstract

The purpose of this research was to know the effect of ethylmethane sulfonate (EMS) on the growth, yield and quality of Elephant grass.  The experimental method with completely randomized design (CRD) was applied.  Fifeteens plot area 2 x 3 m2 were used in this experiment.  There were three treatments and five replications. The treatments consisted of R0 = Elephant grass control, R1 = Elephant grass with 0.1% EMS treatment, and R2 = Elephant grass with 0.2% EMS treatment.  The variables were the development (height of plant, the number of leaf, the leaf area and ratio of stem to leaf), yield (forage/plant, forage/plot and dry matter yield and quality (dry matter, crude protein and crude fiber content) of Elephant grass. These results of variance analysis showed that the treatments significantly affected  on  the height of plant, the forage yield/plant and the crude protein content but not significantly affected on the number of leaf, the leaf area, ratio of stem to leaf, forage yield/plot, dry matter yield, dry matter and crude fiber content.Key words : ethylmethane sulfonate, Pennisetum purpureum, growth, yield, quality Animal Production 14(2):87-91
Crude Protein and Crude of Fiber Benggala [Panicum Maximum] and Elephant [Pennisetum Purpureum] Grasses on Drought Stress Condition Purbajanti, ED; Anwar, S; Widyati, S; Kusmiyati, F
ANIMAL PRODUCTION Vol 11, No 2 (2009): May
Publisher : Universitas Jenderal Soedirman, Faculty of Animal Science, Purwokerto-Indonesia

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Abstract

Knowledge of crop response to water is essential for  proper irrigation management. Research  was conducted at Forage Crop Laboratory of Animal Nutrition Department, Faculty Of Animal Husbandry, Diponegoro University  during 9 month  trying two type grass that  were benggala ( Panicum maximum) and elephant  ( Pennisetum purpureum) with treatment of the following dry stres : S0 = control, without  stress; S1 =  1 times drought stress,  S2 =  2 times drought stress  , and S3 =  3 times  drought stress by lay out of complete random design( factorial pattern). Parameter perceived were( 1) forage production , (2) dry matter production, (3) percentage of crude protein, and (4) percentage of crude fibre. Data collected to be analysed  by analysis of varians  continued with Duncan multiple range test. Result of research indicate that forage production of  elephant grass  (103,79 g/pot) bigger than  benggala (53,08 g/pot). Dry matter production of elephant grass was   18,77 g/pot  higher than  benggala  grass( 14,54 g/pot).  Drought stres do not affect to forage  production  also  dry matter production : Percentage of crude protein  of  benggala grass (9,10%) higher than elephant grass (7,02%), while percentage crude fibre of benggala grass (35,64%) higher than elephant grass (31,67%). Drought stres do not influence percentage of crude protein  and crude fibre of benggala and elephant grasses. Conclusion from research were (1) elephant grass  have higher forage production  and  dry matter production than benggala grass (2) percentage of crude protein and crude fibre of benggala grass  higher  than elephant grass, (3) drought stres do not  affect to forage production , dry matter production, percentage of crude protein  and crude fibre. (Animal Production 11(2): 109-115 (2009) Key Words : crude protein, fiber, drought stress
Needs of integrated science textbook for junior high school based on learning style (descriptive research) Priscylio, G; Rochintaniawati, D; Anwar, S
International Conference on Mathematics and Science Education of Universitas Pendidikan Indonesia Vol 3 (2018): Promoting 21st Century Skills Through Mathematics and Science Education
Publisher : Pascasarjana Universitas Pendidikan Indonesia

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Abstract

One of the factors that determine the achievement of learning objectives is theteaching materials used in the learning. Teaching Materials are all materials (information, tools, and text) thatare arranged systemetically, which display the whole competencies to be mastered by students [1]. One of the teaching materials that are often used is teaching materials in the form of textbook. Textbooks are typically the main source of learning material for students and the source of information on a specific subject or field [2]. This research is a Descriptive Research that aims to see the urgency of teaching materials in the form of textbooks in integrated science lesson junior high school related to visual student learning style. This research was conducted at Junior High School 29 of Bandung. The data collection instrument used in this research is in the form of teacher and students questionnaire. The answers of teachers and students questionnaire wasanalyzed descriptively for each item. The results of the questionnaire showed that both teacher and Students prefer textbooks that use more attractive colours, more detailed explanations and more examples related to daily life. The finding of the research suggest that textbook is urgently needed to support learning process mostly for visual learning style.
How to develop SETS-based colloidal system teaching materials? Marfu’ah, S; Anwar, S
International Conference on Mathematics and Science Education of Universitas Pendidikan Indonesia Vol 3 (2018): Promoting 21st Century Skills Through Mathematics and Science Education
Publisher : Pascasarjana Universitas Pendidikan Indonesia

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Abstract

This study aims to develop SETS-based colloidal system teaching materials through 4S TMD method to develop students’ creativity. Research method in this study was Richey’s and Klein’s development research consisting of design, development, and evaluation. This study was conducted until the step of design and development. The procedure used in the development step was the 4S TMD method at the selection and structuring steps. The selection step consisted of curriculum analysis, indicators development, international textbooks analysis, and identification of values or aspects of SETS integrated into the teaching materials of the colloidal system. The structuring step had been developed concept maps, macro-structures, and multiple representations. The results of the selection and structuring steps had been reviewed and validated by expert lecturers in chemistry education. The results showed that the teaching materials developed were in accordance with the curriculum, scientifically correct, there were skills developed, and the SETS aspects was in accordance with the phenomenon presented.
How to develop student creativity through teaching materials of hydrocarbon SETS-based? Hasanah, F; Anwar, S
International Conference on Mathematics and Science Education of Universitas Pendidikan Indonesia Vol 3 (2018): Promoting 21st Century Skills Through Mathematics and Science Education
Publisher : Pascasarjana Universitas Pendidikan Indonesia

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Abstract

This study aims to produce teaching materials of hydrocarbon SETS-based to develop student creativity through 4S TMD method. This article is the important part of the development of teaching materials that includes the selection and structuration steps. In the selection step, developing of indicators, explaining the concept of hydrocarbon using standardized textbooks sources, and developing student creativity and SETS aspects that can be integrated into hydrocarbon materials. Furthermore, in the structuration step, organizing concepts and materials into concept maps, macro structures, and multiple representations. The result of the two steps in the important part of this study produced a draft of SETS-based teaching material. Evaluation of the draft of teaching material has done by expert lecturers in the field of chemical education. The results show that the teaching material developed have been in conformity with the curriculum, scientifically correct, student creativity and SETS aspect is compatible with the subject matters, and concept maps, macro structures, multiple representations developed have been valid.
How to develop teaching material of buffer solution based on SETS? Astuti, D P; Anwar, S
International Conference on Mathematics and Science Education of Universitas Pendidikan Indonesia Vol 3 (2018): Promoting 21st Century Skills Through Mathematics and Science Education
Publisher : Pascasarjana Universitas Pendidikan Indonesia

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Abstract

This study aims to develop teaching materials for the buffer solution based onScience, Environment, Technology, and Society (SETS)to improve the science process skills.The research method used is development research, while the method of development ofteaching materials used is 4S-TMD. This article is the first part of the development of teachingmaterials that includes selection and structurization steps. In the selection step, developing theindicator accordance with the curriculum requirements, explaining the buffer conceptusingstandardized textbook sources, and analyzing SETS that can be integrated with the bufferconcept. In the structurization step was developed concept maps, macrostructures and multiplerepresentations that connect between the level representations of macroscopic, submicroscopic,and symbolic. The results of the selection and structurization steps were evaluated by expertlecturers. The results show that the teaching materials developed are in accordance with thecurriculum requirements, it has been ensured the scientific truth, the phenomena presented inaccordance withSETS and concept maps, macrostructures, and multiple representationsdeveloped have been valid. The first part of the development of teaching materials that includesthe selection and structurization steps results in a draft of teaching material for the buffersolution based on SETS.