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Urban farming is an innovative solution to the increasingly complex challenges of food security in urban areas. In the midst of limited green open space and narrowing vacant land due to urban development. Urban farming offers an effective approach to maintain sustainable food availability. farming, urban communities can optimize limited space into areas that produce a variety of agricultural products.The implementation of urban farming not only contributes to family food security, but also supports the creation of a greener and more sustainable urban environment. With a systematic approach and the support of various stakeholders, urban farming is proving to be a promising solution to address food security challenges in the modern era. The program also encourages healthy lifestyles and environmental awareness among urban communities.This community service program is a collaboration between UIN K.H. Abdurrahman Wahid Pekalongan Group 24 students and SD Negeri Kandang Panjang 10 students in implementing urban farming as a food security solution. This program aims to educate and introduce the concept of urban farming from an early age.

Urban farming is a modern form of adaptation that is responsive to food security challenges, especially in areas with limited space such as Banten Province. This study aims to examine the dynamics of food security in the agrarian region of Banten and offer innovative solutions through urban farming practices. The global food crisis, the shrinking of agricultural land due to development and land conversion, and the decreasing public interest in farming are crucial issues that threaten local food security. In Banten, land conversion has resulted in the loss of more than 9,869.61 hectares of productive rice fields, which has a direct impact on local production capacity and increased dependence on external supplies. As a solution, this study advocates urban farming innovations such as hydroponics, vertical farming, and the utilization of idle land and home gardens. This approach not only utilizes limited land efficiently but also aligns with the principles of wise food planning as exemplified in the story of the Prophet Joseph. Qualitative methods with literature studies and content analysis were used to gather in-depth information. To create sustainable food security, this study identified three main strategies: digitalization of agricultural spatial planning using geographic information systems (GIS) to prevent illegal land conversion; Integrating circular agriculture and urban farming to manage organic waste; and engaging the younger generation as drivers of innovation through technologies such as the Internet of Things (IoT) and digital marketing. These efforts are expected to create high-quality and sustainable food security in Banten Province by combining social intelligence, technology, and environmental sustainability.

Vertical Aquaponics System for Optimal Space Management Overview Due to rapid urban development, less land available for agriculture. Vertical aquaponics systems offer innovative solutions to overcome these problems. This research aims to design and develop a vertical aquaponic system that is efficient and effective in utilizing limited urban space. This system combines fish farming and plant cultivation simultaneously in a closed system. The nutrient-rich water from the fish pond is flowed into the plant substrate in a circular process. The vertical design of the system allows for high productivity in very limited areas. . The results of the study aim to contribute to the development of sustainable urban agriculture and increase food availability in urban areas.  Overview Due to rapid urban development, less and less land is available for agricultural activities. Vertical aquaponics systems offer innovative solutions to overcome these problems. This research aims to design and develop a vertical aquaponics system that efficiently and effectively utilizes limited space in the city. This system combines fish farming and plant cultivation simultaneously in a closed system. Nutrient-rich water from fish ponds is flowed into the plant growth substrate. The results of this research are expected to contribute to the development of sustainable urban agriculture and increase food availability in urban areas.

Urban farming in Pakintelan Village, Gunungpati District, Semarang, was initiated to overcome food security challenges and improve local economic welfare through the use of limited land in urban areas. The main problem faced is the low level of community participation in agricultural activities and a lack of understanding of sustainable agricultural practices. This program involves UNPAND KKN students in providing training in farming techniques, organic pest management, and the use of compost fertilizer. The methods applied include direct training and mentoring by extension workers, routine monitoring and evaluation, and outreach through local communities. Apart from that, the program also encourages the processing of harvests into value-added products and the formation of small farmer groups to strengthen community involvement. As a result, this program has succeeded in increasing community participation, maintaining environmental sustainability, and contributing to the economy with the potential to use harvests for consumption or sale. It is hoped that the replication of the program in other areas will expand its impact, making urban farming a sustainable and inclusive model of urban agriculture.

Rapid urbanization in major cities has led to the decreasing availability of green spaces, exacerbating urban challenges such as the Urban Heat Island (UHI) effect, high energy consumption in buildings, and air pollution. In response, green architecture innovations like green roofs and vertical farming present opportunities for reducing carbon footprints and improving urban sustainability. This study explores the potential for life-cycle carbon footprint reduction through the integration of green roofs and vertical farming systems in high-rise buildings, focusing on energy savings, environmental impact, and air quality improvements. Using Life-Cycle Assessment (LCA) methodology, the research evaluates carbon emissions reduction, operational energy savings, and ecosystem benefits from different building scenarios. Simulation models were developed for conventional high-rise buildings and those incorporating green roofs and vertical farming. EnergyPlus, SketchUp, and SimaPro software were used for energy consumption calculations and carbon emissions modeling. The study analyzes various intervention scenarios-baseline (no vegetation), green roof only, vertical farming only, and a combined system-based on tropical climate data from cities like Jakarta, Surabaya, and Kuala Lumpur. Results reveal that the integration of both green technologies significantly reduces cooling demand, lowers CO₂ emissions, and improves urban microclimates by reducing surface temperatures and enhancing air quality. Policy recommendations and guidelines for adopting green construction practices in tropical regions are provided, alongside suggestions for future research on optimizing these technologies, conducting economic modeling, and evaluating multi-building approaches at a district scale.

Increasing population density and concretization in urban areas, such as Magelang City, have caused a significant decrease in green open spaces (RTH), which has an impact on food security and independence. Magelang City, with a population density of 7,361 people/km², faces a major challenge in providing adequate green spaces to support local food production. Rejowinangun Selatan Village, as one example, shows the limited green open spaces available. To overcome this problem, urban farming, especially through hydroponic techniques, offers an effective solution. The methods applied in this community service include various approaches to educate and directly involve the community in the practice of making hydroponics with solar panels. By utilizing renewable energy-based technology, such as solar panels and integrated electrical systems, hydroponic farming allows food production in limited spaces such as house terraces. This system not only increases food independence and security, but also ensures that the vegetables produced are healthier because of the minimal use of pesticides. Urban farming with the hydroponic method can optimize the use of limited space and become a productive and sustainable alternative for urban communities.

Pengabdian kepada masyarakat ini bertujuan untuk mengembangkan urban farming melalui pemanfaatan greenhouse di Kelurahan Wonolopo, Kecamatan Mijen. Kegiatan ini dimaksudkan untuk meningkatkan ketahanan pangan lokal serta memberdayakan masyarakat dalam praktik pertanian perkotaan yang berkelanjutan. Green house dibangun di area kantor kelurahan sebagai model pertanian modern yang dapat diaplikasikan di lingkungan perkotaan. Kegiatan melibatkan pelatihan intensif kepada warga setempat tentang teknik-teknik urban farming, termasuk pemilihan tanaman, penanaman, perawatan, dan pemanenan. Hasil kegiatan menunjukkan peningkatan pengetahuan dan keterampilan masyarakat dalam bidang pertanian perkotaan serta keberhasilan greenhouse sebagai fasilitas produksi tanaman yang efisien. Diharapkan, proyek ini dapat menjadi model untuk implementasi urban farming di wilayah perkotaan lainnya dan berkontribusi terhadap peningkatan ketahanan pangan secara berkelanjutan.

Land scarcity in urban areas encourages people to look for efficient alternatives to plant cultivation. Hydroponics, as a soil-free cultivation technique, offers a potential solution. This activity aims to carry out socialization and training on hydroponics to improve knowledge and skills in independent plant cultivation that can support household food security in urban communities. The method used was socialization and hands-on practice of making simple hydroponic systems. The results of the socialization and training showed a significant increase in participants' knowledge of the principles of hydroponics.  The evaluation percentage is 78% of residents of Nginden Jangkungan sub-district, Sukolilo sub-district, Surabaya city are able to independently apply the Hydroponic system in the yard of each house and can take economic benefits from farming through the hydroponic system, but in the application of this hydroponic system requires high production costs, so that people pay more attention to the use of input allocations used to get more added value. Hydroponics is one of the sustainable agricultural efforts in urban environments that have limited land with the introduction of hydroponic systems, socialization, and application practices in urban areas that have been implemented.

Hydroponics as an urban farming model is very meaningful to the community, including the Inkiya Farm business in Bajubodoa village, Maros district. There are several obstacles in the production of lettuce vegetables in hydroponics that are run so that they experience fluctuations, by natural disturbances causing plant damage and even crop failure (wilting or dying), limited space, drought resistance and less than optimal growth which is generally experienced because 100% using the NFT system. The implementation of Bell-Siphon on Ebb Flow system hydroponic technology is an alternative solution that is cheaper, environmentally friendly, space saving and more optimal plant production. The Bell-Siphon unit driving the tidal system is simply assembled, placed in a hydroponic container.  This science and technology application activity results in additional knowledge for partners on how to build or assemble a Tidal System with Bell Siphon to increase the amount of production, reduce the risk of crop failure, and the potential for better production of lettuce plants. The activity resulted in at least 6 units of Ebb-Flow hydroponics in containers (tubs) with various media, installation and training for women members of the partners. Sustainability of implementation is expected at Partners as well as at the household scale in each member who has received training.

The city of Surabaya, as the most populous city in East Java, faces challenges in providing green land and open space for its residents. Thus, urban farming emerged as an innovative solution to overcome limited land in urban areas. This community service aims to empower the residents of Gebang Putih Subdistrict, Surabaya, through an urban farming program. This activity includes outreach and training on urban farming techniques, including hydroponics and growing plants in pots. The results of this activity show that residents gave a positive response and high enthusiasm for this program. Urban farming not only increases food security and family independence but also contributes to improving environmental quality and public health.

Surabaya, a city with high population density in East Java, faces challenges in managing land for reforestation. To address this issue, the Surabaya Green and Clean (SGC) Program was introduced, focusing on greening and waste management. One of the proposed solutions is hydroponics, a soilless farming method that can be applied on limited land. On July 28, 2024, community service activities were carried out in Kalijudan Village, Mulyorejo District, Surabaya City, to introduce and increase public knowledge about hydroponics. This activity involved socialization and practical hydroponic planting with the participation of 25 residents. The program consisted of preparation stages, socialization, planting practices, and report preparation. Socialization included exposure to hydroponic theory and practical demonstrations, while each participant received tools and materials for home experiments. The planting method with rockwool has proven effective in supporting plant growth, while the distributed eco-enzyme provided dual benefits by increasing plant growth and reducing household waste. This program successfully introduced hydroponic technology and increased awareness of sustainable urban agriculture. Hopefully, this activity will be the first step in developing hydroponics and creating a greener environment in Surabaya.

The Urban Farming Group "Keputih Bersemi," based on educational hydroponics, is an active farming group in Kelurahan Keputih, Surabaya. Urban farming is an ideal choice for urban residents to engage in productive activities that can be followed by the surrounding community and, of course, produce something of added value. The plants or vegetables grown by the Keputih Bersemi farming group include pak choi, lettuce, and others. The harvested produce has not been sold or distributed optimally because marketing activities are conducted conventionally, with members offering the products directly to the surrounding community. This situation arises because the majority of the farming group members are elderly and still unfamiliar with technology. The use of social media, such as Instagram and Whatsapp, plays an important role as it significantly increases the visibility and sales of the group's agricultural products. A marketing strategy that involves engaging content, the use of relevant hashtags, and active interaction with potential customers will expand market reach and attract more potential customers.

The residents of RW 05 Jomblang, Candisari District, Semarang City, are increasingly concerned about the impact of plastic waste on the environment. As a solution, used plastic bottles are being utilized as planting media in hydroponic techniques by MBKM students from various universities, such as UPN "Veteran" East Java, Padjadjaran University, and Semarang State University. This utilization of plastic bottles reduces waste while supporting sustainable agriculture by minimizing the use of land and water. The program raises community awareness about eco-friendly urban farming, focusing on water efficiency and quick harvesting processes. Education includes basic hydroponic techniques and their implementation using used bottles, which has been met with active community participation. Evaluations show tangible results, such as pakcoy plants being distributed to participants. Discussions with the RW 05 Chairman reveal significant benefits for the community in utilizing used items for agriculture. This program strengthens the community and suggests further development to enhance local food security and environmental awareness, as well as motivate the adoption of modern agricultural technologies

This community service activity was carried out to members of Aisyiyah Karang Bahagia Branch. The purpose of this activity is to improve the skills of Aisyiyah members of Karang Bahagia Branch, especially in utilising the environment as a place for vegetable cultivation. This activity was carried out using two methods, namely face-to-face and online via zoom meet. This activity was carried out on 19 July 2021 to 25 July 2021. From the activities that have been carried out, the participants are very enthusiastic about the material presented by the speaker and are eager to practice farming with the hydroponic method.