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Pratiwi, Ambar

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Author-ID : 1536418

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Effect of Banana Bark and Cow's Blood Meal Compost on the Green Lettuce Plants (Lactuca sativa L.) Growth Pratiwi, Ambar; Wulandari, Ayu
Journal of Biotechnology and Natural Science Vol. 3 No. 1 (2023): June
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/jbns.v3i1.8365

Green lettuce (Lactuca sativa L.) is a vegetable crop that is in great demand by the public, but its production is relatively low so that it cannot meet the high market demand. One of the efforts to increase the production of green lettuce plants is by applying organic fertilizer. The purpose of this study was to determine the content of C, N, P, K elements, the effect of compost application for growth and optimal dosage. The research method used a complete randomized design (CRD) four treatments namely Control, A (dose of 60 g), B (dose of 120 g) and C (dose of 180 g) with 5 replications. Data from the study were analyzed using the Anova test, significant data continued with the DMRT 5% further test. Testing the effect with simple liner regression analysis. The results showed that compost gave a blackish brown color after 35 days and had no odor and obtained nutrient values of C (41,77%), N (6,92%), P (0,09%) and K (0,12%). The treatment of compost variations produced plant height of 26,80 cm, number of leaves of 10,60 leaf, plant wet weight of 22,40 gram, root weight of 0,57 gram, root length of 12,94 cm leaf area of 130,06 cm² with significant results, while chlorophyll A (0,19 mg/L) and total (0,616 mg/L) levels had insignificant results. The conclusion of the research is that the compost of banana stalks and cow blood meal contains C by 41,77%, Total N by 6,92%, Total P by 0,09% and Total K by 0,12%. Banana pith compost and cow blood flour had a significant effect on all parameters of green lettuce plant growth except leaf chlorophyll content at the most optimal dose was treatment A (dose of 60 g).

Comparison of Total Phenolic, Flavonois Content, and Antioxidant Activity Artocarpus heterophyllus Lamk. Methanol Extract from Sleman and Bantul District Pratiwi, Ambar; Susilowati, Riska
Journal of Biotechnology and Natural Science Vol. 1 No. 1 (2021): June
Publisher : Universitas Ahmad Dahlan

Antioxidant compounds can inhibit free radicals that are harmful to body health. The side effects of natural antioxidant compounds are safer than synthetic antioxidants. The source of natural antioxidant compounds can be obtained from jackfruit because it contains phenolics, flavonoids, sterols, and tannins. The study was conducted to determine the highest total phenolic content, total flavonoids, and antioxidant activity in the methanol extract samples of jackfruit from Sleman and Bantul Regencies. The extraction technique used maceration with methanol (1: 5) solvent. The phenolic content was tested by the Follin-Ciocalteu method at a wavelength of 745 nm, while the flavonoid content was tested using the AlCl3 method at a wavelength of 435 nm. The antioxidant activity was determined by the diphenylpicrylhydrazyl (DPPH) method at a wavelength of 517 nm. The results showed that the total phenolic and flavonoid content of the methanol extract of jackfruit from Bantul Regency was 1.927 m GAE / mg and 0.261 m QE / mg higher than Sleman Regency 1.353 m GAE / mg and 0.0913 m QE / mg and the highest antioxidant activity name in the sample extract from Bantul Regency, the IC50 value was 581.5 mg / mL and based on the results of statistical tests there were significant differences in content. This study concludes that the total phenolic content and total flavonoids as well as the antioxidant activity of the methanol extract of jackfruit from the Bantul Regency were higher than from Sleman Regency.

Morphological Variation of “Jamur So” (Scleroderma sp.) from Purworejo Regency, Central Java Pratiwi, Ambar; Putri, Diah Asta; Gultom, Putri Syifa; Indah, Rosiana; Sasongko, Hadi
Journal of Biotechnology and Natural Science Vol. 2 No. 1 (2022): June
Publisher : Universitas Ahmad Dahlan

Fungal diversity is high in Indonesia, one of which is Scleroderma sp. Scleroderma forms a symbiotic relationship with Gnetum gnemon. Its fruiting body is puff-ball shaped, and its gleba can be consumed because of its taste and nutritious. Study on the Scleroderma’s diversity in Purworejo Regency has not been done. In this study, morphological characteristics were used as main identification character. Scleroderma samples were collected from Grabag, Kemiri, and Kaligesing and then observed their morphology and spore characteristics. Morphological traits observed on fruit body shape (globose and kidney-shaped); and ornamentation on peridium layer (cracked, nodule and peeling). Chemical content, temperature, and humidity of the soil were also observed as supporting data.

Growth Response and Biochemistry of Red Spinach (Amaranthus tricolor L.) with the Application of Liquid Organic Fertilizer Lemna sp. Pratiwi, Ambar; Roka Aji, Oktira; Sumbudi, Milliniawati
Journal of Biotechnology and Natural Science Vol. 2 No. 2 (2022): December
Publisher : Universitas Ahmad Dahlan

Red spinach is widely cultivated and consumed by the public because it has high antioxidants, vitamins (A, C, E), protein, carbohydrates, fats, minerals, iron, magnesium, manganese, potassium and calcium. P giving POC can increasered spinach biomass. Nutrients in POC have been decomposed so that they are easily absorbed by plants. This study aims to analyze the giving of POC Lemna sp. on growth and biochemical content of red spinach and determine the concentration of POC Lemna sp. effective for red spinach (Amaranthus tricolor L.). The study used a completely randomized design with 3 replications and 3 treatments. The independent variable in this study was the concentration of liquid organic fertilizer Lemna sp. (A=0%, B=5%, and C=10%). Data were analyzed by ANOVA test and DMRT test at 5% level. The results showed that the administration of POC Lemna sp. gave significantly different results on the A (0%) treatment of plant height, stem diameter, and flavonoid parameters. Giving POC Lemna sp. can increase the growth and flavonoid content of red spinach. The concentration of liquid organic fertilizer Lemna sp. 5% effective for the growth of red spinach (Amaranthus tricolor L.).

Co-Authors AA Sudharmawan, AA Afdal Mazni Agustina, Devanda Rahma Ajie, Hamidillah Alfahmi, Hilman Ahnaf Ayu Wulandari Bayu Setiawan Dwi Setyawan Eryati, Eri Fauzi Ahmad Muda Gultom, Putri Syifa Hadi Sasongko, Hadi Husna, Ikrima Fi Ichsan Luqmana Indra Putra, Ichsan Luqmana Indra Indah, Rosiana Irsalinda, Nursyiva Jinan, Rifa Fatma Misbahul Munir Mofa, Ikhwan Moh. Mirza Nuryady Novi Febrianti Nurmayasari, Fita Nurwidodo, Nurwidodo Oktira Roka Aji Putri, Diah Asta Sabarina Saputri Sakinah, Rahmah Suhada, Bambang Sumbudi, Milliniawati Susilowati, Riska Suwartiningsih, Nurul Utami, Inggita Wibawati, Kholifatul Asysyifaa Nur Widodo Zahra, Safa Auli

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