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The Rice Bowl (Nasi Mangkok) culinary business in Indonesia has experienced rapid growth after the COVID-19 pandemic and has become a key part of the modern food industry, meeting consumer demand for convenience and taste. Since 2020, rice bowl sales have continued to rise annually, driven by shifting consumption habits toward food delivery services like GoFood and GrabFood. Despite this trend, academic studies on the rice bowl business remain limited. Classified as convenience food, rice bowl consumption has increased by over 10% from 2019 to the projected figures in 2025. Sales volume has risen from 1.5 billion portions in 2020 to over 3 billion in 2025, with an annual growth rate of 10–15% and estimated revenues between IDR 15–20 trillion per year. With rising demand, many rice bowl brands have entered the market. However, consumers often struggle to decide which brand to choose, as purchasing decisions are influenced by multiple factors. This study analyzes consumer behavior influencing rice bowl purchasing decisions, focusing on cultural, social, psychological, and personal factors, with a case study in Sidoarjo Regency, East Java. Using an explanatory research design, the study surveyed 161 consumers across four sales locations.The F-test results show that all four variables simultaneously have a significant positive effect on purchasing decisions (at the 99% confidence level). However, the t-test results reveal that the cultural factor (X1) negatively influences purchasing decisions, while social, psychological, and personal factors have a positive impact. Among these, the psychological factor (X3) is the most dominant, highlighting the importance of consumer motivation and perception in shaping buying behavior. Enhancing this factor can support the sustainable growth of rice bowl businesses in Sidoarjo.

In community service, elementary school children are invited to understand the process of the rice grain chain and how the rice reaches the dining table. This activity not only teaches elementary school children about the rice supply chain, but is also expected to foster a sense of gratitude and appreciation for the food they eat every day. This activity is carried out using interactive storytelling methods using props, discussions and using interactive games. Evaluation is also carried out informally through observations during discussions and games, and by giving short questions to children about their stages and their respective roles. This learning activity contains values ​​from the SDGs, namely ending hunger (SDGs 2) and sustainable consumption (SDGs 12). The purpose of this service is for elementary school children to know the journey of rice from the rice fields to the dining table by using pictures and telling stories for each group, in addition to elementary school children to work together and need each other..    

An examination of the variables affecting rice output and farmers' income levels serves as the driving force behind this study. One of the settlements where people live and work is this one. Using multiple linear regression methods and confirmatory factor analysis (CFA), the study aims to ascertain and assess the effects of fertilizer use, capital, productivity, land, distribution, price, demand, and consumption on farmers' income levels. One hundred farmers served as the sample size. Questionnaires were sent in order to gather data, and SPSS version 24.0 was used for data processing. According to the findings of experiments conducted using hypothesis testing, farmer income is significantly impacted by the factors of production, consumption, land, and prices. Next, the variables Farmer income is not significantly impacted by fertilizer use, demand, distribution, or capital. Four factors are suitable to influence income, according to the research's findings. The first component, productivity, has a value of 0.912; the second, consumption, has a value of 0.764; the third, land, has a value of 0.848; and the fourth, price, has a value of 0.864. The Rotated component matrix value indicates that there are eight factors. The government must work to inspire and excite the people to boost the wealth of farmers in Sei Rotan village, and it is hoped that farmers would keep increasing the productivity of their rice output.

As people's consumption levels increase, the plastic waste produced will also increase. It's normal if in the future it becomes a serious environmental problem. We need a technology that is able to replace plastic waste into products that have a long life so that they do not return to waste in a short time. Making paving block products from plastic waste is another way of utilizing plastic waste over a long period of time, in order to increase utilization efficiency and reduce the environmental burden on plastic waste and form innovative products into building materials. The most important problem with plastic is plastic waste which cannot be decomposed naturally. Cleaning up plastic waste takes a very long time, and also the use of plastic can hardly be regulated. Based on the results of surveys, interviews and observations conducted on the community around Kuala Village, the community's awareness of waste processing is very minimal and there are lots of piles of plastic waste which can have a negative impact on health and disrupt the preservation of environmental functions, including residential environments, forests, rice fields, and rivers. To reduce the volume of plastic waste that is not managed properly, efforts are being made to utilize plastic waste to make paving blocks in Kuala Lemang Village. to explore the potential for using plastic waste as an alternative material in making environmentally friendly and sustainable paving blocks. Plastic waste collected from the surrounding environment is processed into mixed materials in making paving blocks. This process involves chopping, mixing with conventional materials such as sand, and testing the strength of the final product. Public acceptance of plastic-based paving blocks has proven positive, especially after trials in the local environment. This research contributes to better plastic waste management and offers new economic opportunities in the construction sector, while supporting sustainable development.

Rice imports have been demonstrated to influence the Farmer's Exchange Rate (NTP) significantly. A reduction in rice imports by 356,286.2 tons in 2020 corresponded with a decline in NTP to 101.65. In contrast, per capita, weekly rice consumption did not exhibit a statistically significant impact on NTP, as evidenced by the lowest consumption in 2019 (1.504 kg), while the NTP remained at 104.46. On the other hand, rice productivity was found to have a notable influence on NTP, with trends in productivity closely mirroring those of the NTP. The harvest area, however, did not present a significant correlation with NTP, as demonstrated in 2019 when an increase in harvest area did not prevent the NTP from remaining at a lower level of 104.46. Lastly, rice production had a significant effect on NTP, with increases in production during 2021 and 2022 leading to subsequent increases in the NTP.                  

Rice prices in Indonesia have experienced significant fluctuations from 2019 to 2023, influenced by factors such as production, consumption, imports, international prices, and crop damage. The highest rice production was recorded in 2022 at 31,540,522 tons, while the lowest production occurred in 2023 at 31,101,285 tons. The highest rice consumption was in 2023 at 30,616,081 tons, and the lowest was in 2019 at 28,930,000 tons. The highest rice imports were in 2023 at 2,715,854 tons, and the lowest was in 2019 at 6,197 tons. Global rice prices also fluctuated, ranging from Rp. 6,674/kg in 2019 to Rp. 8,667/kg in 2023. Crop damage was lowest in 2022 at 470,131 hectares and highest in 2019 at 819,444 hectares. It's important to note that the fluctuations in rice prices are intensely influenced by several factors that highlight the need for effective price stabilization policies to guarantee the accessibility and affordability of rice for the public.

The Bolotomo cattle breeder group in Wingkosigromulyo Village, Nkombol District, Purworejo Regency, has been established since 2010 with the help of subsidies from the local Livestock Service. Initially, they focused on producing organic fertilizer, but switched to the feeder cattle and meat business because the selling price of fertilizer was low. Livestock management is still traditional, and concentrate feed is rarely used because it is expensive and difficult to obtain. In the dry season, food availability is limited, and rice straw and field grass are the main food sources. The service activity by Tidar University students aims to help farmer groups overcome the feed crisis with technology for making pellets from local materials. Demonstration of making pellets using a mixture of calliandra leaf flour, rice bran, pineapple peel, molasses and tapioca flour. Pellets have the advantage of improving feed quality, consumption efficiency and shelf life. Farmers also shared their experiences and expressed the need for processing livestock waste, such as biogas plants, to reduce pollution and increase income. Integration between the agriculture, fisheries and livestock sectors is the focus for sustainable development.

The purpose of this study is to see how changes in rice imports in North Sumatra Province between 2009 and 2019 are due to changes in rice production, prices and consumption. To see how the influence of independent factors on the dependent variable, this study uses multiple linear regression analysis. The results of multiple linear regression analysis partially show that domestic rice imports in North Sumatra are negatively and not significantly affected by rice production. In North Sumatra, the price of rice is positively and insignificantly affected by rice production, while rice consumption is negatively affected and may not be significantly affected by rice imports. There is no visible effect between the variables of rice production, rice prices, rice consumption, and rice from 2009 to 2019.