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Mitra Sains
Published by Universitas Tadulako
ISSN : 23022027     EISSN : 26866579     DOI : https://doi.org/10.22487/ms26866579
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Mitra Sains (E-ISSN: 2686-6579 ISSN: 2302-2027) is an open-access peer-reviewed scientific journal in agricultural sciences and agricultural economics. The Mitra Sains is published by Tadulako University in March and September. Mitra Sains invites high-quality research/review articles for publication in the coming issues. Focus: Mitra Sains is an interdisciplinary journal in agricultural sciences and economics. Scope: Mitra Sains welcomes original and significant contributions from across the field in plant science, agronomy, plant protection, forestry, animal husbandry, fishery, agribusiness, and agricultural social economics.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 10 Documents
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Search results for , issue "Vol 5 No 2 (2017): April" : 10 Documents clear
Analisis Kesalahan Konsep Matematika Pada Mahasiswa Program Studi Pendidikan Fisika (Studi Kasus Pada Materi Kinematika Dengan Analisis Vektor) Muhammad Fachrurrozy; Muslimin Muslimin; Sahrul Saehana
Mitra Sains Vol 5 No 2 (2017): April
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i2.61

Abstract

Mathematics errors give great effects in physics problem solving, thus the using of mathematics in physics is indispensable because both of them are structured knowledge. The objective of this research is to describe mathematics concepts errors of undergraduate students of Physics education study program on kinematics concepts using vector analysis. Data were gained from students’ answer sheets and Thinking-Aloud recording. The errors of mathematic concepts and procedures were analysed using Kastolan, then elaborated how students use mathematics in physics problem solving. This research was conducted at Teacher Training and Education Faculty of Tadulako University and research’ subjects were 5 undergraduate students of Physics education study program which were chosen by purposive sampling methods based on their basic physics subject mark. The results show that mathematics has crucial role for students in physics problem solving. Percentage of students’ mathematics errors in integral concepts is 50%, differential concepts is 20%, distributive of mathematics is 20%, whereas mathematics procedures errors embody 50% of integral operation errors, 20% of differential errors, 80% of exponent differential errors and trigonometry, 60% of fraction operation and 20% of calculation operation. These results indicate the lack of respondents’ mathematics concepts understanding specially in exponent differential and trigonometry concepts and enact the unit vectors.
Induksi Kalus Dan Inisiasi Tunas Bawang Merah (Allium Ascalonicum L.) Lokal Palu Nulfitriani Nulfitriani; Zainuddin Basri; I Nengah Suwastika
Mitra Sains Vol 5 No 2 (2017): April
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i2.63

Abstract

The aims of these experiments were to obtain appropriate concentrations of 2,4-D for callus induction and cytokinins for shoot initiation of shallot local palu. The concentrations of 2,4-D tested for callus induction namely 1 ppm, 2 ppm, 3 ppm, 4 ppm and 5 ppm; whilst concentrations of cytokinins tested for shoot initiation including 2 ppm, 3 ppm and 4 ppm for BAP or Kinetin. These experiments used Completely Randomized Design and each experimental unit utilized two explants with three replications. Data were computed and analysed by analysis of variance and tested with DMRT for identifying the differences between treatments tested. Results of these experiments indicated that callus induction as well as shoot initiation of shallot local palu were highly affected by concentrations of 2,4-D or cytokinins tested. The addition of 3 ppm 2,4-D into culture medium was the appropriate concentration for callus induction. At such medium composition, it was obtained the fastest callus formation (average 4.67 days after culture) and all explants cultured could produce calli. The addition of 2 ppm BAP into culture medium was the appripriate cencentration for shoot initiation of shallot local Palu. At such medium composition, it was obtained the fastest shoot formation (average 3.67 days after culture), the highest number of shoot formation (average 2.33 shoots per explant) and the highest chlorophyl content (53.6576) mg chlorophyl A per gram leaves.
Pengaruh Model Pembelajaran Kooperatif Mind Mapping Dan Motivasi Belajar Terhadap Hasil Belajar Siswa Tentang Biologi Di Kelas Ix Smp Negeri 6 Palu Amalia Buntu; Achmad Ramadhan; Lilies N. Tangge
Mitra Sains Vol 5 No 2 (2017): April
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i2.65

Abstract

The aims of this reaserch were explain the influence of mind mapping cooperative learning and learning motivation toward students learning outcomes about biology of IX grade student at SMP Negeri 6 Palu. This was a quantitative descriptive research with quasi experiment method. The taking of sample was done through random sampling. Each of groups consist of two class. The technique of data analysis used multiple regression. The result of data analysis indicate that partialy it was obtained X1 significant probability value was 0,00 < 0,05 and X2 significant probability value was 0,00 < 0,05. Simultane indicate the significant probability value was 0,00 < 0,05 so that mind mapping cooperative learning and learning motivation influence sinificantly toward the learning outcomes in biology either simultane and partial.
Analisis Pengendalian Persediaan Bahan Baku Rotan Pada Mebel Rotan Palunesia Collection Team Kota Palu Mohammad Rizki; Sulaeman Miru; Hadayani Hadayani
Mitra Sains Vol 5 No 2 (2017): April
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i2.67

Abstract

This research was conducted to; (1) Determine the optimal order quantity of raw rattan at Palunesia Collection Team Rattan Furniture 2014, (2) Knowing the amount of safety stock of raw rattan to be available at Palunesia Collection Team Rattan Furniture 2014, (3) Know the reorder point materials rattan conducted by Palunesia Collection Team Rattan Furniture 2014, (4) To Find out the total inventory cost of raw material should be issued by the rattan at Palunesia Collection Team Rattan Furniture 2014. Selection of a study conducted by purposive (deliberately) with the consideration that Rattan Furniture Palunesia Collection Team is one of the rattan furniture industry is still active to this day of 12 rattan furniture industry in Palu, on the other hand Palunesia Rattan Furniture Collection Team simply producing furniture as the main product. This study was conducted from April to May 2015. The data analysis that used in this research included Economiq Order Quantity (EOQ), Safety Stock, Reorder Point, and Total Inventory Cost. The results indicate that the optimal number of reservations of raw materials for fine rattan in 2014 for rattan poles Amounted to 105.61 kg, for Rattan pitrit optimal order quantity Amounted to 127.34 kg and rattan core optimal order quantity Amounted to 52.20 kg. Safety stock should always be available in 2014 for this type Amounted to 26.28 kg polished rattan, Rattan pitrit of 50.49 kg, and the types of rattan core of 12.37 kg. Reorder point to be done in 2014 for the types of rattan poles when the amount of raw materials Amounted to 30.54 kg, rattan pitrit at the time the raw material Amounted to 55.39 kg, and the types of rattan core when the amount of raw materials Amounted to 14, 32 kg. Total inventory costs incurred in 2014 for this kind of rattan poles Rp. 124,003.00, for a type of rattan pitrit Rp. 119,109.95 and for the types of rattan core Rp. 123,207.14.
Efisiensi Penggunaan Input Produksi Kakao Di Desa Dolago Kecamatan Parigi Selatan Kabupeten Parigi Moutong Sarini Sarini
Mitra Sains Vol 5 No 2 (2017): April
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i2.69

Abstract

Central Sulawesi Province especially Parigi Moutong district, the majority of the population lives on farming, so to obtain optimal production requires the use of efficient input. The purpose of this research is to determine the effect of cocoa production inputs (the number of trees in production (X1), Urea fertilizer (X2), NPK fertilizer (X3) and labor (X4) that affecting the level of cocoa production efficiency. The respondent was selected through Simple Random Sampling that obtained 35 out of 350 people of total population. The analysis used is Multiple Linear Regression using Cobb-Douglass and Efficiency Analysis. The results of F-test show that variable the number of cocoa trees produced (X1), Urea fertilizer (X2), NPK fertilizer (X3) and labor (X4) simultaneously affect the cocoa production at Dolago Village. The result of test-t show that variable of the number of cocoa trees produces (X1), Urea fertilizer (X2), NPK fertilizer (X3) and labor (X4) affecting the production of cocoa at Dolago Village. The results of the efficiency analysis show that the value of variable efficiency (The number of trees in production (X1) 0.26<1 it means no need the addition of cocoa trees, the value of the variable urea fertilizer efficiency (X2) 1.24>1 it means not efficient, need the addition of urea fertilizer in accordance with a balanced dose, the value of the variable NPK fertilizer (X3) 463.8>1 it means that the use of input NPK fertilizer not efficient so that need increasing doses of NPK fertilizer in accordance with the dose of balanced and the value of the variable efficiency of labor (X4) 0.066<1 it means not efficient because the use is excessive so farmers had to reduce the use of labor on cocoa farms at Dolago village, South Parigi sub district.
Pengaruh Model Pembelajaran Kooperatif Tipe Jigsaw Ii Dan Teknik Peta Pikiran Terhadap Hasil Belajar Siswa Kelas X Sma Negeri 3 Poso Pada Mata Pelajaran Biologi Dewi Purwasi Samaela; Mohamad Jamhari; I Nengah Kundera
Mitra Sains Vol 5 No 2 (2017): April
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i2.70

Abstract

The research was aimed to describing the influence of Jigsaw II type as cooperative learning model and mind mapping technique on the learning achievement for biology subject at grade X, and than to describing the influence of Jigsaw II type as cooperative learning model and mind mapping technique simultaneosly on the learning achievement. The research was quantitative with quasi- experimental design. Population in this research were all students in grade X SMAN 3 Poso which consists of 8 study groups. Research sample that is graders XD and XH, taken with random probabiliy sampling. Research data were obtained from the student achievement, and were analized by t-test was followed by ANOVA test with SPSS 20. The result of the research showed that there was a significant influence jigsaw II type as cooperative learning model and mind mapping technique on the learning achievement for biology subject, and there is significant influence of Jigsaw II type as cooperative learning model and mind mapping technique simultaneosly against on the learning achievement for biology subject. The Conclusion of this research that there is significant influence of jigsaw II type as cooperative learning model and mind mapping technique on the learning achievement for biology subject at grade Xof class X SMAN 3 Poso.
Pengaruh Pelatihan Dan Motivasi Kerja Terhadap Kinerja Mengajar Guru Ipa Di Smp Se-Kota Poso Indri Novayanti Gala; H. Achmad Ramadhan; Amram Rede
Mitra Sains Vol 5 No 2 (2017): April
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i2.71

Abstract

The purpose of this research was to analyze the influence of training and work motivation of Science Teachers Teaching Performance in Junior High School in Poso. This research is quantitative descriptive survey method conducted from October to December 2015. Population and samples are 33 respondents. Instruments used as a data collectionis a questionnaire with multiple regression analysis techniques. Hypothesis test results obtained Fcount > Ftable (4,978 > 3,316) and contributions influence of 24,9%. Thus, the results of this study povide information that the training and work motivation to have influence of Science Teachers Teaching Performance in Junior High School in Poso.
Pengaruh Model Pembelajaran Time TokenTerhadap Motivasi Dan Hasil Belajar Mahasiswa Tentang Biologi Sel Pada Program Studi Pendidikan Biologi Di Universitas Sintuwu Maroso Poso Shelvy Ferawati Rurua; Andi Tanra Tellu; Samsurizal Suleman
Mitra Sains Vol 5 No 2 (2017): April
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i2.72

Abstract

The objectives of the study is to describe the influence of Time Token learning model towards learning motivation, to describe the influence of Time Token learning model towards students’ learning achievement of Biology Cell, and to determine the relationship between students’ motivation and learning achievement of Biology Cell in Biology Education Studies Program at the Sintuwu Maroso University. The research design uses posttest only control group design in quasi-experiment research. The sample of the research is 79 students. Data were obtained from the learning motivation and learning achievement of biology cell. Data were analyzed using t test and product moment correlation test using SPSS 16.0 for Windows. The results showed that there is significant influence of Time Token learning model toward student’ motivation in learning Biology Cell (t> t table, 1.950> 1.665); there is significant influence of Time Token learning model toward students’ learning achievement of Biology Cell (t> t table, 10.941> 1.665); and there is a positive relationship between learning motivation and learning achievement of Biology Cell in Biology Education Studies Program at Sintuwu Maroso University (r = 0.601 it is the strong category). Based on the results can be concluded that Time Token learning model can improve student’ motivation and learning achievement.
Pengaruh Pengelompokan Berdasarkan Gaya Belajar Dengan Pendekatan Problem Solving Terhadap Hasil Belajar Dan Aktivitas Siswa Kelas Xi Sma Negeri 1 Dolo Ferdiansyah Ferdiansyah; Baharuddin Hamzah; Irwan Said
Mitra Sains Vol 5 No 2 (2017): April
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i2.73

Abstract

Internal factors greatly affect the success of students’ learning. Identify the learning style can be used for grouping students in learning so that students can learn in a proper way, comfortable and positive. This study aims to: (1) Describe the differences in learning outcomes and students’ activity with problem solving approach between grouping based on learning styles and grouping not based on learning styles, (2) Describe the interaction effect of grouping based on learning styles in a problem solving approach with learning style of each students towards their learning outcomes and activity. Population of this study were the students of the grade XI IPA in SMAN 1 Dolo, and with purposive sampling technique, the samples taken were the students of the grade XI IPA 1 and XI IPA 2. Collecting data using a VAK (visual-auditory-kinesthetic) learning styles questionnaire, objective tests, and students’ activity observation sheet. This type of research is quasy experiment. Data were analyzed using two-way ANOVA test. Based on the results of data analysis can be concluded that: (1) There are differences in learning outcomes and students’ activity with problem solving approach between grouping based on learning styles and grouping not based on learning styles, (2) There are interactions of grouping based on learning styles in a problem solving approach with learning style of each students towards their learning outcomes, but there is no interaction of grouping based on learning styles in a problem solving approach with learning style of each students towards their activity.
Pengaruh Perhatian Orang Tua, Konsep Diri Dan Motivasi Belajar Terhadap Hasil Belajar Siswa Tentang Matematika Kelas Viii Smp Negeri Di Kecamatan Sausu Kabupaten Parigi Moutong Tri Sumiyati; Baso Amri; Sukayasa Sukayasa
Mitra Sains Vol 5 No 2 (2017): April
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i2.74

Abstract

The research aimed at finding out and describing the direct and indirect effects of parents’ care, self-concept, and learning motivation toward the learning outcomes on mathematics. The population was all the students of Grade VIII of SMP Negeri in Sub-district of Sausu, Parigi Moutong Regency in 2013/2014. They were 201 students in 10 classes. The sample was 110 students in 5 classes taken by using simple random sampling technique. This research was ex-post facto with causality designed to explain the cause and effect relationship between the variables. The techniques of data collection consisted of questionnaire on parents’ care, self-concept, and learning motivation; and mathematics test. The data were analysed quantitatively by using line analysis with SPSS 20 and AMOS. It is found that: (1) parents’ care directtly contributed significantly to the students’ mathematics learning outcome; (2) the students’ self-concept directly contributed significantly to the students’ mathematics learning outcome; (3) parents’ care indirectly contributed significantly to the students’ learning outcome on mathematics through learning motivation; (4) the students’ self-concept indirectly contributed significantly to the students’ learning outcome on mathematics through learning motivation; (5) parents’ care, self-concept, and learning motivation directly and indirectly contributed significantly to the students’ learning outcomes on mathematics.

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