Bio-based fertilizers (BBFs) have been promoted as a solution to help manage bio-waste problems and improve soil health conditions. Their potential is to replace mineral fertilizers due to nonrenewable energy dependency and the accumulation that threatens environmental issues. Currently, laboratory and field-based literature have been growing since European Union (EU) looks BBFs as the future of agriculture bio-based products. Nevertheless, it is worth to summarizing the results on a regular basis. The added value of this work is to study the opportunities of bio-based fertilizer utilization to sustain plant productivity and investigate the challenges to water footprints and human health. This study found that contamination of heavy metals and pathogens is the main problems of BBFs implementation which need more attention to develop the technology process including the environmental risk assessments. Furthermore, compared to mineral fertilizers, BBFs have obstacles to getting social acceptance due to the challenges of transportation and production cost, the concentration of nutrients, matching crops, and policy framework. To sum up, BBF is a long-run scheme that should be started to tackle global issues since the potency as energy alternative sources to support the circular economy paradigm.
Penelitian ini bertujuan untuk mendapatkan formulasi nutrisi AB-Mix, pupuk organik cair dan pupuk hayati pada sistem hidroponik tetes untuk tanaman tomat ceri. Penelitian dilakukan di screen house di Dusun Gunungmalang, Kecamatan Serang, Kabupaten Purbalingga pada ketinggian 1400 m dari permukaan laut pada bulan Agustus – September 2020. Perlakuan dicoba yaitu P1(100% dosis AB-Mix), P2 (75% dosis AB-Mix + POC + pupuk hayati), P3(50% dosis AB-Mix + POC + pupuk hayati), P4 (25% dosis AB-Mix + POC + pupuk hayati), dan P5 (0% dosis AB-Mix + POC + pupuk hayati). Rancangan perlakuan yang digunakan yaitu rancangan acak kelompok (RAK) dengan 6 ulangan. Variabel yang diamati adalah tinggi tanaman dan jumlah cabang. Hasil peneltian menunjukkan formulasi nutrisi 75% AB Mix + POC + Pupuk Hayati dapat digunakan untuk mengurangi penggunaan nutrisi AB-mix pada budidaya tomat ceri sistem hidroponik tetes pada media cocopeat. Kata kunci: formulasi nutrisi, hidroponik tetes, tomat ceri
Abstract. Rante H, Alam G, Usmar, Zahra S, Kurniawati A, Ali A. 2022. Antimicrobial activity of Streptomyces spp. sponge-associated isolated from Samalona Island of South Sulawesi, Indonesia. Biodiversitas 23: 1392-1398. The resistance case of infectious diseases increases annually, while the necessity of antibiotics as a drug choice for therapy most important is needed. One of the efforts to overcome these problems is an investigation of new antibiotic sources, namely marine organisms. Actinomycetes are microbes well known as more antibiotic-producing than fungi and bacteria. This study aims to the identification of marine actinomycetes isolated from sponge samples in Samalona Island, South Sulawesi, Indonesia. The antimicrobial activity was evaluated against multi-drug resistant (MDR) Staphylococcus aureus, Escherichia coli, and Candida albicans. Isolation was carried out using SCA (Starch Casein Agar) medium by the pour plate method. The selected isolates were designated as SML10h and SML10a. The isolates SML 10h and SML 10a were recovered from sponges Haliclona sp. and Aplysina sp., respectively. The production of antimicrobial substances was performed by fermentation of isolates in SNB (Starch Nitrate Broth) medium for 14 days. The antimicrobial activity was shown by the ethyl acetate extract with 2 mg/20 ?L concentration against all test microbes. Phylogenetic analysis of the 16S rRNA gene sequences revealed that the similarity of SML 10a was most closely related to Streptomyces geysiriensis (98%).
A case study in Indonesia of circular bioeconomy implementation was investigated by managing livestock wastes, especially goat manure (GM), which an excess of its availability may be adverse to the environment. The efficacy of this scenario to control pollution or to increase productivity still needs to be proven. Hence, this research aimed to study the possibility of circular bioeconomy implementation using biotic and abiotic resources in Indonesia under excessive nutrients (GM and mycorrhizal) on P. angulata production. Outdoor factorial container experiment was carried out using a randomized complete block design in Central Java, Indonesia. Treatments included four levels of GM (0, 10, 20, 30 g plant−1) and four levels of mycorrhizal (0, 10, 20, 30 g plant−1) applied in the soil with six replications. This case study revealed that the use of mycorrhizal inoculant and GM indicated no significant difference to most of P. angulata’s growth and yield parameters. The implementation of circular bioeconomy through integrated farming of P. angulata was not an instant solution for economic and environmental optimization, but can be considered as a way to tackle environmental problem due to the excessive livestock wastes. The environmental sustainability can be achieved step by step, without hindering farmers’ income.
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