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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 1 (2017): Januari" : 10 Documents clear
Respon Tanaman Kacang Tanah Terhadap Berbagai Jenis Pupuk Pada Entisols Di Kelurahan Tondo Karlina Muhsin; Yosep Patadungan; Muhammad Basir
Mitra Sains Vol 5 No 1 (2017): Januari
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i1.27

Abstract

This study aimed to determine the effect of various kind of fertilizers (biological fertilizer, biological fertilizer + chicken manure, chicken manure, NPK and manure goat) on the growth of peanut plants (Arachis hypogaea L.) in the Entisols soil at Tondo Village. This study was conducted in April to July 2015 in the Tondo Village. This study used a Randomized Block Design (RBD) a factor of 6 (six) treatment using the controls, biological fertilizer, biofertilizer + chicken manure, chicken manure, NPK fertilizer, and manure goat repeated 3 times so that the number of treatment tested a total of 18 plots. Results of this study shows that the use of organic and anorganic fertilizers have an effect on height of peanut plant and number of leaves when compared with controls. Where the provision of all types of organic and inorganic fertilizer (manure goat, NPK fertilizer, chicken manure, combined with the biofertilizer, chicken manure, and fertilizer biological) effect on the height and number of leaves peanuts. These results are consistent with the measurement of the dry weight of seeds, dry weight of brangkasan, P-total soil, total P-Plant and soil microbes. It is also found that biofertilizer combined chicken manure showed the highest performance. In addition, researchers also believe that the use of biological fertilizers and manure have an impact on the environment better because it can improve soil structure over the long term.
Produksi Antosianin Tersalut Maltodekstrin Dari Kelopak Bunga Rosella (Hibiscus Sabdariffa, L.) Dan Aplikasinya Dalam Pengolahan Pangan Fungsional Muhammad Irsyad; Mappiratu Mappiratu; Abdul Rahim
Mitra Sains Vol 5 No 1 (2017): Januari
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i1.29

Abstract

Production of anthocyanin maltodextrin coating from roselle’s petals (Hibiscus Sabdariffa,L.) and application in processing functional food has been investigated. The objective’s of research were : (1) To find out extract ratio of roselle’s petals to maltodextrin which is produce anthocyanin maltodekstrin coating which has a high degree of purity and stability. (2) To find out the concentration of anthocyanin maltodextrin coaty in seaweed syrup which was produced syrup with organoleptic properties. Design of this research used one factor complete random design and group random design one factor complete random design to applied in handling influence of anthocyanin dark extract ratio of roselle’s petals to maltodextrin (v/b) (1:1; 2:1; 3:1; 4:1; and 5:1) and group random design applied in organoleptic test of functional seaweed syrup which added by various concentration of coated anthocyanin maltodextrin about (g/100 mL) (0.125; 0.25; 0.375; 0.5 and 0.625) anthocyanin and tested by 30 untrained panelist. Total analysis of coated anthocyanin maltodextrin conducted every 1 week for 8 weeks starting at week 0 using spektrofotometer UV-VIS method at 535 nm wavelength. The result of the influence of coated anthocyanin maltodextrin ratio showed anthocyanin number (highest), degree of purity (highest), and the smallest decrease in retention during storage was ratio 5:1 (v/b), then with this ratio 5:1 conducted prediction of shelf life or expiration period using kinetics reaction model, so that expiration period of coated anthocyanin maltodextrin is 28 weeks. For the best organoleptik quality of functional seaweed syrup consistently is application of coated anthocyanin maltodekstrin with anthocyanin concentration is 0,625 g/100 mL.
Perbedaan Model Pembelajaran Modified Free Inquiry (MFI) Berbasis Laboratorium Riil Dengan Virtual Pada Pokok Bahasan Laju Reaksi Terhadap Hasil Belajar Kimia Siswa SMAN 1 Pasangkayu Eska Perdanawati Kahar Putri; H. Baharuddin Hamzah; Vanny. M. A. Tiwow
Mitra Sains Vol 5 No 1 (2017): Januari
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i1.30

Abstract

This study aims to determine the differences between MFI learning model based on real and virtual laboratory on the subject of reaction toward the students outcomes of chemical learning at SMAN 1 Pasangkayu. The sample consisted of two classes of grade XI IPA 5 which was 29 people as an experimental class I and grade XI IPA 6 which was 29 people as an experimental class II determined Cluster Random Sampling. Data was collected using test instruments such as achievement test. The research data used statistical analysis t-test (Independent Sample Test) with the prerequisite test was a normality and homogeneity test. The average score of the students outcomes of chemical learning by using MFI model based on real laboratory was 73.01 and the average score of the outcomes of students chemical learning by using MFI model based on virtual laboratory was 80.52. Based on statistical analysis with t-test hypotheses obtained value |tcount| = 3.833 and it was located in the region of rejection of H0 between -2.003 and 2.003. These results indicate that there was a difference between MFI learning model based on real and virtual laboratory on the subject of reaction rate toward the students outcomes of chemical learning at SMAN 1 Pasangkayu.
Analisis Produksi Dan Pendapatan Usahatani Padi Sawah Metode System Of Rice Intensification Di Kecamatan Sindue Kabupaten Donggala Astuti Astuti
Mitra Sains Vol 5 No 1 (2017): Januari
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i1.32

Abstract

This research aimed at finding out the influence of factors in line with land area factor, seed, Urea fertilizer, Phonska fertilizer, Seprit fertilizer and labours toward the production of rice field cultivated with System of Rice Intensification (SRI) method at Lero Tataro Village, Sindue district, Donggala regency. The 40 respondents were taken through census method. A multiple linier regression was used to analyze the data. The results showed that the independent variable (Xi) gave a big influence toward the dependent variable (Y). The coefficient of determination (R2) was 0.979 which means that 98 percent of the variations of rice field’s production can be explained by the variable of land area (X1), seed (X2), Urea fertilizer (X3), Phonska fertilizer (X4), Seprit fertilizer (X5), and the labour (X6). The other 2 percent was explained out of the model. It can be said that farm production through System of Rice Intensification (SRI) method at Lero Tatari village were obviously influenced by the land area, seed, Urea fertilizer, Phonska fertilizer, Seprit fertilizer, and labours. The income of farm production using System of Rice Intensification (SRI) Method at Lero Tatari, Sindue district was Rp. 13.023.005.88/0.76 ha, or Rp. 17.079.351.97/ha.
Analisis Pendapatan Dan Strategi Pengembangan Usaha Budidaya Rumput Laut Di Desa Ungkea Kecamatan Petasia Timur Kabupaten Morowali Utara Alber Tulak
Mitra Sains Vol 5 No 1 (2017): Januari
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i1.35

Abstract

This research aims at identifying the income and the strategy of the development of seaweed farming in Ungkea Village Petasia Timur Sub-district Morowali Utara Regency. This research was applied through descriptive method and used qualitative approach. The setting of this research was determined purposively considering that Morowali Utara is one of area in Central Sulawesi Province that has seaweed farming. The sampples were taken through census method where the populations werw 44 respondents of seaweed farming. The data analysis used used is income and SWOT. The result of this research showed that the total cost avarage (TC) of seaweed farming in one period is consisting of permanent cost (FC) and variable cost (VC) is Rp 11.957.419,07 The total productions is 4.314 kg/432 expanses of 25m with selling price of Rp 9.000/kg then the farming obtained the avarage income of Rp 38.834.018 and net income about Rp 26.876.599,11. The cultivation of sea product of Eucheuma cattonii based on the calculation of R/C with ratio of 3.25>1, showed that this kind of business is worthy to be developed. The result of SWOT analysis revealed that this kind of business is in position of quadrant II that support the strategy of diversification with streagth-threats. The strategy of strength-threats (ST) maximizing the natural resources capacity in managing seaweed farming buseness and preventing various exist threats such as: climate change that caused pests and diseases in the seaweed. The involvement of the government through some programs pupports the management of fisheries sector as in business of seaweed farming that innovatively maximum and sustainable. Finally it improved the income and the welfare of the society in the coast of Morowali Utara Regency.
Pembelajaran Direct Instruction Berbasis Animasi Terhadap Konsepsi Siswa Materi Ikatan Kimia Kelas X Sman 1 Dondo Kabupaten Tolitoli Uswatun Hasanah; Daud K Walanda; Siang Tandi Gonggo
Mitra Sains Vol 5 No 1 (2017): Januari
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i1.37

Abstract

Uncomplete assessing of materials abstract in learning of chemistry will lead to students on experiencing misconceptions as a result of the wrong internalization. This study aimed to analyze the positive effect and significance of the direct instruction learning based on animation to wards students’ conceptions of chemical bonding in the Grade X at SMAN 1 Dondo Tolitoli. This study applied a quasi-experimental method with one group pretest-posttest design. Samples were 29 students determined by purposive sampling. The independent variable in this studywas the direct instruction learning, while the dependent variable was the students' conceptions. The data acquisition instrument was in the form of a diagnostic test consisted of 20 multiple-choice questions and reasons using Certainty of Response Index (CRI). Data was analyzed using t-test two sample pairs. Hypothesis test results obtained –taccount (-16.37) <-ttable (-2.05) at significance level of 5%. This study concluded that there is a significant effect positively of direct instruction learning based onanimation to improvestudents’ conceptions in the Grade X at SMAN 1 Dondo Tolitoli, with the effect size d = 2.8 or with a relatively large level of effectiveness.
Analisis Keberlanjutan Sistem Agroforestri Tradisional Di Desa Salua Kecamatan Kulawi Kabupaten Sigi Sulawesi Tengah Ferianto Ferianto; Arief Sudhartono; Sri Ningsih
Mitra Sains Vol 5 No 1 (2017): Januari
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i1.39

Abstract

The research aims were to identify the biophysical condition of agroforestry land in Salua Village, to analyze the socio-economic and community institution condition in Salua Village, and to analyze the sustainability of agroforestry system perceived from the aspects of land biophysical condition, socio-economic and community institution condition in Salua Village. This research was an explorative-descriptive study done through survey method. Data collected was by interviewing respondents and by direct observation and measurement in the field. The number of respondents was 30 people included village government officer, members of traditional institutions and farmer groups who live in Salua village. The tool of analysis consisted of vegetation analysis, soil analysis, socio-economic analysis, institutional analysis and sustainability analysis using Likert scale of 1,3 and 5. The soil analysis indicated that soil nutrient contents were still very good for supporting plant growth. The socio-economic condition was dependent upon land tenure, profit-sharing system, and area size of tilled land and plant types. Increasing production is strongly needed by the farmers. The four dimension aggregate index showed that the average value was 50% for the socio-economic dimension, 66.7% for the ecology, 60%for the production and 100% for the institution. Based on the analysis on vegetation, socio-economy, institution and sustainability using Likert scale, it can be concluded that the condition of agroforestry land in Salua village tend to be sustained.
Pengembangan Perangkat Pembelajaran Fisika Kelas X Dengan Model Plomp Di Sma Negeri 5 Palu Kusnaeni Kusnaeni; Marungkil Pasaribu; I Komang Werdhiana
Mitra Sains Vol 5 No 1 (2017): Januari
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i1.42

Abstract

The research aims at developing the Physics subject Instructional packages of year X semester I SMAN 5 Palu by Plomp model. The research employed Research Development Desain. The instructional package drafis that have been previously developed validated by a content expert, a design expert, and a media expert. The revised version of the packages were tried out info three defferent subject indimall group and big group which contained 30 student and 1 teacher. Questionnaire designed in 1 to 5 scale was used as the instrument of data collection. Suggestion, input and coment during consultation period were also noted and used to compliment the collected data from the questionnaire. The results of the data analysis show that 1) the instructional materials product score ranges from 75.38% to 96.84%, indicating that the instructional material is Good and Very Good qualifying , 2) The teacher’s book product score ranges with the average of 80% indicating that the teacher’s book product is Good qualifying , and 3) The s student’s book product score ranges from 80% to 96% indicating that the student’s book product is Good and Very Good qualifying. Based on product feasibility assessment table, that if the cumulative result of the calculation to the development of products derived reach the criteria above a value of 75%, the products developed are considered valid and reliable for use. The effectiveness of the instructional materials obtained by t-test which was tcounted(2,675) , t table(0,05:58)(1,675). It implies that the instructional packages have been valid and ready to be used.
Identifikasi Cemaran Bakteri Escherichia Coli Pada Ikan Layang (Decapterus Russelli) Segar Di Berbagai Pasar Kota Palu Safriyanto S Maruka; Gatot Siswohutomo; Rostiati Dg Rahmatu
Mitra Sains Vol 5 No 1 (2017): Januari
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i1.45

Abstract

Production of fresh fish that is high enough requires good handling technology for fish susceptible to the decay process. Handling fresh fish is still unfavorable in terms of security, including the process of handling the fish after rigor mortis, especially when viewed from the aspect of sanitation and hygiene. Consequently fish up into the hands of the seller before the consumers, had been contaminated by chemical contaminants, physical, and microbiological. The study aims to identify Escherichia coli bacterial contamination on fish float (Decapterus russelli) in various markets Palu. Research using descriptive analysis with Total Plate Count testing and identification of the bacterium Escherichia coli. The result of the identification of Escherichia coli bacteria in three markets in the city of Palu showed that all positive fish are Escherichia coli, where the Presidential Market with the number 210 APM / g, Market Masomba the amount of 3.0 APM / g, and 27 APM / g and Markets parents of 35 APM / g. Based on the results of testing of Escherichia coli showed that fish float in three different markets in the city of Palu have exceeded the maximum contaminant ISO 7388-2009 bacterium Escherichia coli on fresh fish that is <3 / g.
Kajian Berbagai Lama Penyimpanan Entres Terhadap Hasil Sambung Sampin Gkakao (Theobroma Cacao L.) Klon Sulawesi Yuldanto Larekeng; Sakka Samudin; Hendry Barus
Mitra Sains Vol 5 No 1 (2017): Januari
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mitrasains.v5i1.47

Abstract

The purpose of this research was to determine the effect of scionsstored under various time periods on side-cleft grafting results at cacao plant. The research used a Randomized Block design in which five storage period treatments were applied including no period of storage (control), 3 d, 6 d, 9 d, and 12 d storage periodsafter scion cutting time. Each treatment was replicated five times resulting in 25 experimental units. Variables observed were the percentage of living graftings, number of buds, length of buds and total leaf number of scions. The research results showed that under 9 d and 12 d storage periods after scion cutting time, the percentage of living graftings was 53.59% and 36.41%, respectively, while much higher percentage were found in the control, 3 d, and 6 d treatments which were 79.38%, 79.38% and 70.78%, respectively. The control, 3 d and 6 d storage period treatments were significantly affected the percentage of living scion and bud length at 30 d and 45 d after grafting. Scions can be stored up to 6 d after cutting which support a well growth of side-cleft grafting cacao.

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