17 August 1945, University Surabaya has expanded its limited green space and educated students and the community about plant development without planting material, or it is referred to as contemporary farming by using the rooftop area on the third level of the Engineering Building (Q) for hydroponic plant cultivation. Using the PDCA (Plan, Do, Check, Action) method, one may improve the productivity of plants in hydroponic farming. The NFT (Nutrient Film Technique) system, which consists of three pipes stacked in parallel places, is used in the design of the hydroponic growing system. Rockwool, flannel cloth, plastic cups, nutrients, and a pH or TDS (Total Dissolved Solid) measuring device are among the equipment and supplies utilized. Choosing plants that can be used on small amounts of land are.
 
 

Exploitation of mineral resources through mining activities in Indonesia provides significant economic benefits, but also causes various negative impacts on the environment and socio-economic life of local communities. This study aims to review the impacts of various types of mining activities such as sand, coal, and gold. Common environmental damages include deforestation, soil erosion, water, soil, and air pollution, and decreased biodiversity. Socio-economically, mining increases social conflict, health problems, and changes in people's livelihoods. Effective management efforts include law enforcement against illegal activities, implementation of reclamation and rehabilitation, application of impact mitigation technology, and active involvement of local communities in environmental management. Consistent implementation of policies and mitigation measures is key to achieving a balance between economic benefits and environmental sustainability.

The increase in human activities, such as industrialization, urbanization, and transportation, has led to air pollution, including heavy metal contamination such as lead (Pb). Lead originates from vehicle emissions, industrial activities, and fossil fuel combustion, which have detrimental effects on the environment and human health. One effective method for monitoring air pollution is biomonitoring using bioindicators, such as lichen. Lichen is sensitive to air quality and can absorb pollutants, including heavy metals, through its surface. This study uses a literature review to analyze the role of lichen as a bioindicator of heavy metal pollution, specifically lead. Several lichen species, such as *Xanthoparmelia xanthofarinosa* and *Canoparmelia aptata*, are known to accumulate heavy metals from the environment. The results show that the lead content in lichen varies depending on the pollution level in the location. Areas with high traffic have higher lead concentrations compared to areas with low traffic. The advantages of using lichen as a bioindicator include low cost, practicality, and its ability to provide long-term data on air quality. With this understanding, lichen data can be used for pollution mitigation and evidence-based policies to reduce the impact of air pollution. Further research is recommended to explore the potential of lichen in detecting other heavy metals, such as cadmium (Cd) and copper (Cu).
 

This research aims to determine product flow, financial flow and supply chain information flow as well as determine the marketing efficiency of the rice seed supply chain at UD Agro Tani. Cluster Random Sampling method, with a total of 26 respondents. The data collection method uses observation, interviews and documentation methods. Data analysis uses farmer's share analysis and marketing efficiency. In the channel 1 pattern the total margin is IDR. 6,200/Kg and channel pattern 2 total margin Rp. 5,700/Kg, total costs incurred by UD Agro Tani Rp. 1,500/kg includes production and transportation costs. The farmer's share value obtained by partner farmers in channel 1 pattern was 48.33% and channel 2 pattern was 50.43%. The percentage value shows that the flow of the rice seed supply chain is said to be efficient because the farmer's share value is <40%. Marketing efficiency in channel pattern 1 was found to be 12.5% ??and channel pattern 2 was obtained at 13.04%, where the supply chain efficiency was said to be efficient because it was <33%. So the results of farmer's share and efficiency marketing of UD Agro Tani's rice seed supply chain are efficient to do.
Keywords: farmer’s share, marketing efficiency, supply chain

This research uses a qualitative descriptive method to evaluate the implementation of development strategies in the palm oil industry in facing the Fourth Industrial Revolution. The palm oil industry is a nationally strategic sector that plays a crucial role in Indonesia’s economy, both in terms of exports and employment absorption. In the digital era, technological transformation has become a necessity for industry players to improve efficiency, transparency, and global competitiveness. This study examines various adaptive strategies that have been developed, such as the application of digital technologies in the supply chain, integration of information systems in production processes, and the strengthening of human resources through technology-based training. The analysis is conducted through a literature review of recent academic works, government policies, and industrial reports. The findings indicate that the implementation of digitalization strategies still faces challenges, such as limited technological infrastructure, disparities in digital literacy, and regulations that are not yet fully supportive. These results provide a comprehensive picture of the readiness and direction of the palm oil industry’s development in the Industrial Revolution 4.0 era to achieve long-term sustainability and efficiency.

The Perintis Lake area in Bone Bolango Regency, Gorontalo Province, faces a growing conflict between tourism investment and environmental conservation. This study aims to analyze the impact of tourism infrastructure development on the lake’s ecosystem, highlight the importance of conservation, and provide strategic recommendations for sustainable tourism development. Using a qualitative-descriptive approach, the research is based on field observations, literature review, and regional policy analysis. Findings show that unregulated investment activities, particularly constructions along the lake's buffer zone, have led to environmental degradation, such as water pollution, habitat loss, and ecological imbalance. Conservation efforts remain fragmented and lack integration into broader development planning. The study recommends the implementation of sustainable spatial planning policies, stricter environmental regulations, and active community involvement. Collaborative governance between local authorities, private investors, and environmental stakeholders is essential to ensure that economic development aligns with ecological preservation. Striking a balance between investment and conservation is key to maintaining Perintis Lake as a resilient ecotourism destination for future generations.

This study aims to analyze the strategy of developing oil palm plantation business in Andabia Village, Anggaberi District, Konawe Regency. The number of research samples was 26 people. To answer the research objectives using SWOT analysis. The strategy implemented by farmers in developing oil palm business in Andabia Village is in quadrant 1 (one), which is a situation where oil palm farmers have internal strength and also have many opportunities. Therefore, oil palm farmers must use and utilize their internal strengths to the maximum and take advantage of existing opportunities. The right strategy is to use strength to take advantage of large long-term opportunities, namely with an aggressive strategy.

This research aims to analyze the physical and chemical characteristics of wet soils in tidal swamp ecosystems and their implications for sustainable agriculture in South Kalimantan. Tidal marshlands have great potential to be developed as agricultural land, but specific soil conditions require proper management. The results showed that soils in tidal marsh ecosystems are generally clay-textured with high moisture content and low porosity, which affects soil drainage and aeration. Moderately high organic matter content (3-7%) is a positive factor for soil fertility, but soil acidity (pH 4.5-5.5) and high sulfate content pose challenges for agriculture. Soil acidity potentially inhibits the availability of essential nutrients such as phosphorus and increases aluminum toxicity. The potential formation of acid sulfate soils also requires careful management to prevent further soil degradation.

This study aims to assess the economic value and contribution of Non-Timber Forest Products (NTFP) to the income of the community in Kampung Cikupa, Desa Baru Ranji, Merbau Mataram Subdistrict, South Lampung. The population of this research consists of community members, with a total of 200 households. A sample of 36 respondents was selected using simple random sampling. Data were collected through interviews using a questionnaire. The data were analyzed quantitatively to determine the economic value of NTFP based on the market price of the products collected by the community. The research results show that the level of contribution of NTFPs to the livelihoods of the people of Cikupa Village is still very small and the use of NTFPs has not been fully optimized by the community.

Pertanian modern menghadapi tantangan meningkatkan produktivitas tanpa merusak lingkungan. Salah satu solusi yang menarik adalah penggunaan pupuk organik cair dari limbah tahu yang difermentasi dengan bantuan Effective Microorganisme-4 (EM4), air kelapa, dan gula. Limbah tahu, produk sampingan industri tahu, memiliki potensi sebagai bahan baku pupuk organik. Proses fermentasi bertujuan meningkatkan kandungan nutrisi dan mengurangi dampak lingkungan limbah cair tahu. Penelitian ini fokus pada pembuatan pupuk organik cair dari limbah tahu melalui fermentasi dengan EM4, air kelapa, dan gula. Dengan mengkaji pertumbuhan tanaman cabe rawit sebagai contoh, penelitian bertujuan menguji efektivitas pupuk organik cair, mendukung pertanian berkelanjutan, menerapkan pupuk organik cair di pertanian, dan menganalisis kandungan nutrisi. Metode yang di gunakan dalam penelitian ini adalah Rancangan Acak Kelompok (RAK), dengan menggunakan eksperimental tambahan air kelapa, gula, dan larutan EM4 dengan bahan utama Limbah Cair Tahu, yang kemudian di fermentasi selama 0-7 hari dan di control setiap hari. Dalam mengkaji uji efektifitas Pupuk Organik Cair ini kemudian di terapkan pada tanaman cabe rawit yaitu dengan label tanaman A(menggunakan POC) dengan perlakuan pemberian POC sebanyak 5x250ml dalam setiap perlakuan, dengan perbandingan tanaman B(tidak menggunakan POC). Hasil penelitian menunjukkan bahwa perbandingan antara tanaman A dengan tanaman B pada usia 0 – 60 hari di lihat dari tinggi batang Tanaman A mencapai 58,3 cm, sedangkan Tanaman B mencapai 30,4 cm, terdapat juga perbedaan diameter batang kedua tanaman yaitu selisih kurang lebih 1mm. Hasil penelitiaan ini menunjukkan bahwa pemberian pupuk organik cair memiliki dampak positif pada pertumbuhan tanaman cabe rawit, seperti tinggi batang, warna daun, dan diameter batang yang lebih besar. Implikasi dari penelitian ini menciptakan peluang untuk praktik pertanian yang ramah lingkungan dan berkontribusi pada pengelolaan limbah secara berkelanjutan.