This development research aims to determine the effectiveness of Ethno-STEMbased learning tools to improve students' creative thinking skills at SMP Muhammadiyah Tilango. The research method uses the RnD model with research stages including preliminary studies, planning, preparation of initial products, product validation, product trials, final products. Data analysis techniques use descriptive statistics with one group pre-test and post-test designs based on indicators of creative thinking and student response. The results showed that the learning tools met the criteria of being effective.The effectiveness is seen in the positive response results of students, namely 89% and the results of the creative thinking test on the fluency indicator reaching 85%, the flexibility indicator reaching 80%, the original indicator reaching 68% and the elaboration indicator reaching 70%. Based on the results, the n-gain is in the range of 0.3
Entomopatogen merupakan salah satu agen hayati yang menginfeksi serangga serta dapat merusak sistem metabolisme tubuh serangga. Penelitian ini bertujuan untuk mengetahui aktivitas entomopatogen S. marcescens terhadap mortalitas larva kumbang kelapa (B. longissima) Gestro, dan waktu yang dibutuhkan untuk mencapai LT50. Metode yang digunakan adalah metode eksperimen dengan 6 perlakuan pemberian S.marcescens dengan volume bervariasi, terdiri dari A (akuades sebagai kontrol), B (5 ml), C (7,5 ml), D (10 ml), E (12,5 ml), dan F (15 ml) dengan 4 ulangan. Data dianalisis menggunakan uji ANAVA dan Probit LT50. Hasil penelitian menunjukkan bahwa volume S.marcescens berpengaruh terhadap mortalitas larva kumbang kelapa B. longissimiGestro. Mortalitas larva B. longissima tertinggi ditunjukkan oleh pemberian 12,5 ml S. marcescens yaitu sebesar 78%, sedangkan LT50 yaitu 42,5 jam pada perlakuan F. S.marcescens memiliki aktivitas entomopatogen pada larva kumbang kelapa (B. longissima) Gestro.
The objectives of this study are twofold; firstly, it is intended to determine the soil nutrient contents (e.g., nitrogen, phosphor, potassium, manganese, and magnesium) after the provision of Chromolaena odorata organic fertilizer. Secondly, the study is aimed at examining the growth of maize crops after the provision of the same fertilizer. It employed randomized design group consisting of three phases of treatment (i.e., control, fertilizer provision, and provision of Bokashi with Chromolaena odorata) and four-times of the repeating process. Furthermore, the variable consists of the contents of soil nutrient before applying the treatment, vegetative growth (i.e., stem height, stem diameter, leaf size, and dry weight of root, stem, and leaf), and generative growth (i.e., weight of unhusked cob, weight of husked cob, number of seeds per cob, width of cob, and weight of 100 seeds). The data were analyzed by using analysis of variance (ANOVA) and it further examined by employing Least Significance Difference test at 5% level. The results reveal that the provision of Bokashi fertilizer (with Chromolaena odorata as the material) positively impacts the growth of maize crops rather than the provision of green manure and control fertilizer. Keywords: Generative Growth, Organic Fertilizer, Vegetative Growth
Penelitian ini bertujuan untuk mengetahui pengaruh infusa daun gulma siam (Chromolaena odorata) terhadap pertumbuhan bakteri Escherichia coli dan Staphylococcus aureus dan perbedaan yang signifikan antar perlakuan infusa daun gulma siam (Chromolaena odorata) terhadap pertumbuhan bakteri Escherichia coli dan Staphylococcus aureus. Penelitian ini menggunakan metode eksperimen dengan menggunakan Rancangan Acak Lengkap (RAL) yang terdiri dari 6 perlakuan dan 4 kali ulangan. Hasil penelitian menunjukkan bahwa infusa daun gulma siam (Chromolaena odorata) pada konsentrasi 100% memiliki aktivitas tertinggi dalam menghambat pertumbuhan bakteri Escherichia coli yaitu sebesar 5,8 mm dan pada bakteri Staphylococcus aureus sebesar 7,48 mm. Dari hasil analisis statistik One Way Anova dengan statistik uji F dengan taraf kepercayaan 5% bahwa terdapat pengaruh infusa daun gulma siam (C. odorata) terhadap pertumbuhan bakteri E.coli dan S. aureus. Setelah dilakukan uji lanjut (Uji Duncan) didapatkan hasil bahwa terdapat perbedaan yang signifikan antar perlakuan pada masing-masing konsentrasi yang berbeda.
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