Conventional Cultivation Systems Research Articles

Economic Viability of Coffee Plants Cultivated in Agroforestry Systems in Southwest Goiás

Brazil is the world's leading coffee producer. Increased productivity has been observed in recent harvests due to new management and automation technologies. Even with the expectation of a reduction in national production, the state of Goiás has shown an increasing share in coffee production. The municipality of Rio Verde, in Goiás, is among the eight largest coffee producers in the state and is where the Fazenda da Mata enterprise, the main object of this research, is located. The objective of the research is to evaluate the performance of the production of Arabica coffee grown in an agroforestry system through studies on economic feasibility comparing the implementation costs plus the estimated costs and revenues of AFS with the conventional cultivation system. Coffee growing in AFS is a production system that requires research that presents results on economic analysis, thus the aim was to research the economic feasibility of growing coffee in AFS as a sustainable alternative for agribusiness, whose information can contribute to the decision-making of rural managers when comparing a conventional cultivation enterprise to AFS cultivation. Furthermore, AFS can contribute to increased agricultural productivity with less impact on the environment, revealing several possibilities of subsystems that can be applied to large, medium and small rural properties, considering the financial advantages and also the motivating values ​​that direct the farmer towards this agricultural activity. The economic analysis showed that the conventional cultivation system is more advantageous financially, however AFS also presented excellent results. Therefore, it is important to highlight other relevant factors that can be considered when deciding which cultivation system to use in coffee production. Although AFS presented lower financial results than the conventional system, it is a cultivation system that can provide a second source of income for the producer, such as the use of tree species.

Comparison of conventionally and organically grown pineapple in Sri Lanka: An integrative approach applying life cycle assessment and externalities

The pros and cons of the organic and conventional systems of pineapple cultivation have not been studied extensively. Non-consideration of full crop cycle and non-incorporation of environmental externalities are among the other gaps in research. The present study therefore compared Conventional Cultivation System (CCS) and Organic Cultivation System (OCS) of pineapple grown in Sri Lanka using Life Cycle Assessment (LCA) under five impact categories considering system boundary from gate-to-gate and the full crop cycle. Economic analysis was conducted to determine the best system considering positive and negative externalities. Results showed 87% reduction of Global Warming Potential and 89% reduction of Eutrophication Potential under OCS. Higher toxicity potentials were reported under CCS while OCS resulted in zero toxicity. The net benefit for the farmer under OCS was higher. When the externalities were incorporated, the OCS showed a net gain of USD 8208 per ha while the CCS was no longer beneficial (USD -21,162 per ha). The study proposes economic instruments to incentivise farmers and emphasises the need to minimise adverse impacts of pesticides in sensitive locations. The study also highlights the potential of LCA studies when coupled with monetary values in guiding policy to incentivise farmers towards sustainable pineapple production.

Respons Agronomi dan Fisiologi Genotipe Padi (Oryza sativa L.) pada Budi Daya Berkelanjutan

Efforts to maintain rice production in the future face many challenges, including the availability of increasingly narrow land, attacks by plant pest organisms, and declining land fertility due to improper cultivation systems. More than 70% of rice fields are in a disturbed ecological status due to cultivation technology that could be more environmentally friendly, which can interfere with the sustainability of rice self-sufficiency. An environmentally friendly rice cultivation system needs to be developed. This study aims to measure the agronomic and physiological responses of 3 rice genotypes in sustainable cultivation systems. The experiment used a Group Random Design on 3 rice genotypes (black, red, and white) in both conventional and sustainable cultivation systems. The research was carried out in the experimental garden of Polinela Organic Farm, Lampung State Polytechnic, from September 2020 to September 2021. The results showed that the plant, leaf greenery, number of tillers, number of panicles, grain weight per panicle, and biomass weight were not significantly different between conventional and sustainable cultivation. At the same time, the harvest and production indices per hectare were significantly different. The physiological responses to the photosynthesis and transpiration rates differed markedly in conventional and continuous cultivation. In contrast, the conductance of stomata did not differ significantly in both cultivation systems. The red rice genotype is the best, and it has a broader adaptation to conventional and sustainable cultivation systems. Keywords: agronomy, conventional sysem, physiology, rice genotype, sustainable system

Chemical Fractionation of Manganese in Commercial Coffee Samples from Conventional and Organic Cultivation Systems

Coffee, a source of useful nutrients, is predominantly consumed as an infusion. Because of this, the availability of these nutrients is influenced by their solubility, which could be affected by cultivation methods. This study investigates the impact of Brazilian-regulated organic cultivation practices on manganese. It evaluates total concentration, fractionation, and infusion extractability using semi-selective extraction and flame atomic absorption spectrometry (FAAS) for analysis. The average total manganese concentrations were 45.5 ± 11.2 mg kg−1 in conventional coffee and 64.7 ± 9.2 mg kg−1 in organic coffee. The higher manganese levels in organic coffee may be attributed to soil conditions that are beneficial to organic farming. Principal component analysis revealed distinct differences in manganese fractionation, underscoring the impact of cultivation methods on manganese metabolism and storage. Despite these disparities, the manganese levels in coffee infusions and the fraction available for absorption exhibited no significant variation between conventional and organic cultivation group samples.

Comparative Study on Beta-Glucan Content and Proximate Composition of Spring Barley Seeds Genotypes Obtained in Different Crop Systems

This paper explores the proximate composition of spring barley seeds and the b-glucan’s content in various two-rowed spring barley genotypes cultivated using different agricultural systems. The genotypes originated from both autochthonous and foreign sources and were grown under conventional, ecological, and no-treatment conditions. The proximate analysis of spring barley seeds was performed using near-infrared spectrometry, while the b-glucan content was determined enzymatically. The data analysis included principal component analysis and cluster analysis to identify ideal candidates for specific applications. The results indicated that the conventional cultivation system yielded higher levels of starch, sugar, protein and ash content; conversely, the ecological and no-treatment systems showed variations in nutritional parameters, with the no-treatment approach resulting in significantly higher b-glucan and fat content. In line with previous research, this study highlights the influence of genotype and agricultural practices on the barley seeds’ composition. Overall, this research contributes to a better understanding of the nutritional composition of barley seeds and offers insights into selecting specific barley genotypes for various applications in the food, feed, and brewing industries; it also underscores the potential for utilizing spring barley's b-glucan to enhance the nutritional value of various products, promoting cardiovascular and digestive health.

A bioprocess engineering approach for the production of hydrocarbons and fatty acids from green microalga under high cobalt concentration as the feedstock of high-grade biofuels

Botryococcus braunii, a colonial green microalga which is well-known for its capacity to synthesize hydrocarbons, has significant promise as a long-term source of feedstock for the generation of biofuels. However, cultivating and scaling up B. braunii using conventional aqua-suspended cultivation systems remains a challenge. In this study, we optimized medium components and light intensity to enhance lipid and hydrocarbon production in a multi-cultivator airlift photobioreactor. BBM 3N medium with 200 μmol/m2/s light intensity and a 16 h light–8 h dark regimen yielded the highest biomass productivity (110.00 ± 2.88 mg/L/day), as well as the highest lipid and hydrocarbon content. Cultivation in a flat-panel bioreactor resulted in significantly higher biomass productivity (129.11 ± 2.74 mg/L/day), lipid productivity (32.21 ± 1.31 mg/L/day), and hydrocarbon productivity (28.98 ± 2.08 mg/L/day) compared to cultivation in Erlenmeyer flasks and open 20-L raceway pond. It also exhibited 20.15 ± 1.03% of protein content including elevated levels of chlorophyll a, chlorophyll b, and carotenoids. This work is noteworthy since it is the first to describe fatty acid and hydrocarbon profiles of B. braunii during cobalt treatment. The study demonstrated that high cobalt concentrations (up to 5 mg/L of cobalt nitrate) during Botryococcus culture affected hydrocarbon synthesis, resulting in high amounts of n-alkadienes and trienes as well as lipids with elevated monounsaturated fatty acids concentration. Furthermore, pyrolysis experiments on microalgal green biomass and de-oiled biomass revealed the lipid and hydrocarbon compounds generated by the thermal degradation of B. braunii that facilitate extra economical value to this system.

Water saving rice cultivation using sheet-pipe subsurface irrigation

Water saving in rice cultivation has assumed paramount importance, especially in the context of climate change. The introduction of sheet-pipe technology in Indonesia heralded as an innovative subsurface irrigation and drainage system, is poised to revolutionize how to manage this vital resource. Our study was designed with two primary objectives: first, to investigate how rice plants respond when water levels are deliberately reduced using the sheet-pipe technology; and second, to comprehensively analyze water productivity and water use efficiency in comparison to conventional flooded rice cultivation systems. We conducted two distinct experiments: one employing sheet-pipe subsurface irrigation (SSI) and the other utilizing conventional flooded irrigation (CFI). In the SSI setup, the water level was maintained at a depth of 5–10 cm below the soil surface 20 days after transplanting to harvesting. With this setting, the soil moisture was maintained at around 85–95 degrees of saturation. On the other hand, the CFI approach involved water flowing directly over the soil surface, with the water level consistently maintained at a mere 2–3 cm above it. Interestingly, while the SSI method did lead to a reduction in yield, it has significant benefits. Our results showed that a reduction in yield was observed for the SSI 15.5–18.6 % lower compared to the conventional method (CFI). However, the SSI is environmentally benefit compared to the conventional method by reducing 37.5–50.5 % in water irrigation, increasing water use efficiency (WUE) up to 70.8 %, and improving 3.2–10.4 % in water productivity. Our findings reveal that optimizing water conservation may have a disadvantageous effect on rice yield, indicating the importance of optimal water level. Future research to find the optimal water level that balances yield production and environment is required, especially to adapt to dry and warming climate change in the future.

Life Cycle CO2 Emissions Analysis of a High-Tech Greenhouse Horticulture Utilizing Wood Chips for Heating in Japan

High-tech greenhouse horticulture offers efficient crop cultivation that is unaffected by outdoor climate. However, compared to conventional cultivation systems, energy requirements, such as greenhouse heating and control, are larger, and concerns about the associated increase in CO2 emissions exist. Although several previous studies have analyzed CO2 emissions from high-tech greenhouse horticulture, few have covered the entire life cycle. This study aimed to analyze CO2 emissions from high-tech greenhouse horticulture for tomatoes in Japan across the entire life cycle. A hybrid method combining process and input–output analyses was used to estimate life cycle CO2 (LC-CO2) emissions. The emission reduction potential of replacing liquefied petroleum gas (LPG) for greenhouse heating with wood chips was also examined. The results show that LC-CO2 emissions were estimated to be 3.67 kg-CO2 per 1 kg of tomato, 55.6% of which came from the production and combustion of LPG for greenhouse heating. The substitution of LPG with wood chips has the potential to reduce LC-CO2 emissions by up to 49.1%. However, the improved LC-CO2 emissions are still higher than those of conventional cultivation systems; thus, implementing additional measures to reduce LC-CO2 emissions is crucial.

Assessment of sustainability attributes of traditional and conventional maize cultivation in farmer agricultural systems

Objective: To carry out a comparative analysis of the sustainability of traditional and conventional maize cultivation systems in Cuanacaxtitlán. Design/Methodology/Approach: The proposal was implemented through a mixed method approach in which a qualitative research predominated. A sustainability assessment for the 23 farmer systems of maize production in Cuanacaxtitlán was carried out, according to the Indicator-Based Sustainability Assessment Framework (Marco para la Evaluación de Sistemas de Manejo Incorporando Indicadores de Sustentabilidad: MESMIS). Results: The sustainability level between the two types of agroecosystems does not differ much. According to the chosen indicators, TMS is more sustainable in the environmental and economic aspect, while CMS is more sustainable in the social aspect. The average profitability of TMS is better as a result of the milpa profits. Study Limitations/Implications: Family Production Units (FPUs) do not own their lands, which limits the improvement of profitability and sustainability in maize production. To this end, land distribution or support programs for landless farmers is important. Findings/Conclusions: Among the 23 systems under analysis, critical values were obtained for two environmental indicators: fertilizer application and pesticide use. Therefore, improving the use of these inputs is an important task.

Life Cycle Assessment of Conventionally and Organically Grown Pineapple in Gampaha District

Pineapple is one of the major commercial fruits grown in Gampaha and Kurunegala districts of Sri Lanka. Most cultivations are under conventional practices which generate significant environmental impacts while there are few organic cultivations (~1%). There is lack of published on the environmental impacts related to cultivation of pineapple in Sri Lanka. This study therefore aimed to quantify and compare environmental impacts of conventionally and organically grown pineapple in Gampaha District. Environmental impacts were compared using Life Cycle Assessment (LCA) tool which evaluates the potential environmental impacts throughout the life cycle of a product or a process. According to ISO 14040:2006 and ISO 14044:2006 guidelines, LCA methodology has four main phases such as goal and scope definition, life cycle inventory analysis (LCI), life cycle impact assessment (LCIA), and life cycle interpretation. The system boundary for the study was from cradle to farm gate. All the environmental impacts were estimated for a functional unit of one tonne of pineapple. Primary data for the LCA was gathered using a pre-tested structured questionnaire conducted among twenty conventional- and six organic farms. Input and output inventories were prepared during LCI phase. Under LCIA phase, impact categories such as global warming potential (GWP), eutrophication, human toxicity, terrestrial ecotoxicity, and freshwater ecotoxicity were considered. Results indicated that conventional cultivation system has significantly higher impacts compared to the organic cultivation system. Global warming potential of conventionally cultivated one tonne of pineapple was 182.23 kg CO2 eq. It was 26.72 kg CO2 eq for organic cultivation indicating 7 times lower impact. Eutrophication potential was 6.63 kg PO43- eq for conventional cultivation while that for organic cultivation was 0.81 kg PO43- eq (8 times lower). Pesticide use has resulted in 2,279.12 kg 1,4 DB eq of human toxicity, 18,331.71 kg 1,4 DB eq of freshwater ecotoxicity and 1,624,494.37 kg 1,4 DB eq terrestrial ecotoxicity for conventional cultivation while organic cultivations have resulted in no toxicity. The results highlight significant contribution of synthetic fertilizers and pesticides towards all five impact categories of the LCA. The results could provide implications for promoting organic cultivation in order to reduce the impacts on the environment in the long run. 
 Keywords: Life cycle assessment, Pineapple, Conventional cultivation, Organic cultivation, Environmental impacts

Hidroponik sistem Wick Tanaman Sayuran bagi Kelompok Wanita Tani di Kecamatan Marusu Kabupaten Maros

Hydroponics is an innovative plant cultivation technology that is suitable for application to vegetable plants in small yards. Our partner is the Dahlia Women's Farming Group (KWT) located in Temmapadduae Village, Marusu District, Maros Regency. Their daily activities are housewives, they grow various types of vegetables and ornamental plants in their yards, which on average are relatively small with a conventional cultivation system. The aim of this service is to increase the knowledge and skills of partners in implementing the Wick system of vegetable hydroponics which is quite simple, cheap and easy to do in the yard. The forms of activities carried out are counseling, training/plot demonstration, mentoring and evaluation. This service activity provides significant benefits for KWT Dahlia in Marusu District, Maros Regency because it has increased their knowledge and skills from not understanding to understanding/very understanding in cultivating vegetable plants using the Wick hydroponic system in the yard and the growth of vegetable plants obtained is quite good. . This service activity received a positive response from the community and they participated in the entire series of activities with great enthusiasm

Clean Water Media Eel Enlargement and Breeding Training as an Effort to Increase the Entrepreneurial Capacity of the Paya Geli Village Community

Paya Geli Village is a village located in Sunggal District, North Sumatra Province and has good geographical conditions for the development of the agricultural sector, especially freshwater fish. The availability of abundant and easily available clean water has become a strength in the development of the freshwater fish industry in this village. The process of eel cultivation which does not require a lot of equipment and care as well as a large area of ​​land is the main attraction in terms of its development potential. Paya Geli village community. The people of Paya Geli Village only use a conventional cultivation system where the eels are simply left in a mud bath and fed with leftover food. The use of the conventional system will not only have a small impact on productivity but will also encourage a bad and dirty paradigm for the eel consumer society. The solution to this problem is the use of eel cultivation methods with clean water media and partial harvests which will not only increase productivity but also make it easier to control and harvest according to the specifications desired by the market. It is hoped that this service activity will not only increase the productivity of eel cultivation but also become a new source of driving the economy of the Paya Geli Village community and expand employment opportunities through eel farming entrepreneurial activities.

TIME-LAPSE technology in modern embryological practice

This article describes the basic principles of TIME-LAPSE technology. We report the use of this technology in modern embryological practice and compare it with the conventional cultivation system. Herein, we overview modern incubators equipped with the TIME-LAPSE system, including domestic ones, with their advantages and disadvantages listed. The main events of early human embryo development are described and rare events noted, such as abnormal pronucleus formation and disappearance, multinucleation of blastomeres, reverse cleavage, or “direct cleavage” into three blastomeres, which can only be visualized using TIME-LAPSE technology, but not with traditional visual assessment of embryo morphology. The use of artificial intelligence in conjunction with TIME-LAPSE technology for objective assessment and ranking of embryos based on their morphokinetic characteristics is given a thorough consideration. In conclusion, the article presents data on the impact of using technology on the effectiveness of IVF programs. Moreover, we herein describe such unobvious advantages of the TIME-LAPSE system as the ability to train and transfer video data between participants in the IVF protocol.

Keanekaragaman Mesofauna Tanah pada Lahan Pertanian Sayuran Konvensional dan Organik di Kecamatan Baturiti

Diversity of Soil Mesofauna on Conventional Agricultural Land and Organic in Baturiti Sub-District. A comparative descriptive research was carried out to determine the impact of conventional and organic vegetable cultivation systems on the diversity of soil mesofauna in Baturiti District. Each three replicates of soil samples were taken from 5 types of vegetable plants cultivated on conventional agricultural and organic agricultural lands. The samples were taken at a depth of 0-20 cm from purposive vegetable field. Soil mesofauna was separately extracted from each soil sample using the Barlesse-Tullgren extraction method with under 45 watt lamp for 48 hours. The morphology of the mesofauna was observed under stereo microscope. The research results show that the soil mesofauna on conventional agricultural land consists of 7 orders, 18 families, 19 genera and 22 species with a total of 31 individuals per m2, while on organic agricultural land there are 7 orders, 17 families, 20 genera and 23 species with the number of individuals was 45. The soil mesofauna dominance index in all research locations was low between 0.02-0.15. The soil mesofauna diversity index in all research locations is in the medium category, namely between 1.87-2.62. The evenness index of soil mesofauna types throughout the research location is in the high category, namely between 0.95-1.09.

Chemical composition, minerals concentration, total phenolic compounds, flavonoids content and antioxidant capacity in organic and conventional vegetables

The demand for organic vegetables is increasing worldwide, which has led to the growth of organic agriculture. However, information on chemical composition and antioxidant activity in vegetables grown organically under controlled conditions remains uncertain. For this study, 3 vegetables widely consumed in Brazil were cultivated in controlled organic and conventional cultivation systems: lettuce, coriander and tomato. Their chemical composition, mineral concentration, phenolic compound content, flavonoids and antioxidant activity (AA) were evaluated. The analyses of chemical and mineral composition revealed differences between the cultivation systems. Organic lettuce presented higher content of ashes, calcium and potassium. A higher content of phenolic compounds and flavonoids was observed in most organic vegetables. Using the 2,2′-diphenyl-1-picrylhydrazyl (DPPH) assay, the organic tomato exhibited higher AA compared to conventional, while the ferric-reducing antioxidant power (FRAP) method showed higher AA for organic coriander and tomato than theirs conventional version. The correlation between bioactive compounds and AA was positive, higher and stronger for organic vegetables, considering phenolic compounds (including flavonoids) and DPPH or FRAP antioxidant activity. Principal Component Analysis (PCA) disclosed that organic lettuce and coriander were grouped according bioactive components. In general, organic vegetables showed better results for bioactive compounds and antioxidant activity.

Dynamics of Yield and Chlorophyll Content of Four Kangkung (Ipomea reptans Poir) Sequences With Soilless Cultivation System Due to Direct and Residual Effects of Vermicompost Application

The applications of organic fertilizers releasing nutrients slowly not only have a direct impact on the growing crop, but also, residual effects on the subsequent crops in the conventional crop cultivation systems. Studies on the residual effects of organic fertilizer in soilless crop cultivation are quite rare. The present study, which is a pot experiment conducted in a greenhouse, describes the dynamics of yield and chlorophyll content of kangkong as direct and residual effects of vermicompost for four consecutive plantings in soilless crop cultivation, further, compared with inorganic fertilizer treatment. The experimental design used was a randomized complete block design with different levels of vermicompost rates and a control treatment using inorganic fertilizer. The vermicompost was applied only in the first crop, while, inorganic fertilizer was supplemented in each crop. Fresh weight per plant per pot increases ~35 - 54% at the second planting compared with the first planting, thereafter, gradually decreases in subsequent planting. The content of chlorophyll A was found to be relatively constant, while the chlorophyll B content was highest in the first planting and, thereafter, subsequently decreased in further planting. The higher yields were found at 400 - 500 g pot-1 vermicompost fertilizer dose, insignificantly different from the inorganic fertilizers treatment.

The Effect of Organic and Conventional Cultivation Systems on the Profile of Volatile Organic Compounds in Winter Wheat Grain, Including Susceptibility to Fusarium Head Blight.

The grain of 30 winter wheat cultivars differing in terms of their resistance to FHB (Fusarium head blight) was tested. The cultivars were grown in four variants of field trials established in a split-plot design: control without fungicides, chemical control of FHB with fungicides after Fusarium inoculation, Fusarium head inoculation, and organic cultivation. The profile of volatile compounds in grain samples was determined by mean headspace-solid phase microextraction and analyzed by gas chromatography time-of-flight mass spectroscopy. The identified volatile profile comprised 146 compounds belonging to 14 chemical groups. The lowest abundance of volatile organic compounds (VOCs) was found for the organic cultivation variant. The performed discriminant analysis facilitated the complete separation of grain for individual experimental variants based on the number of VOCs decreasing from 116 through 62, 37 down to 14. The grain from organic farming was characterized by a significantly different VOCs profile than the grain from the other variants of the experiment. The compounds 1-methylcycloheptanol, 2-heptanone, 2(3H)-furanone, and 5-hexyldihydro-2(3H)-furanone showed statistically significant differences between all four experimental variants.

Impact of organic and conventional cultivation systems on nutrient concentration of broccoli

Impact of organic and conventional cultivation systems on nutrient concentration of broccoli

Energy balance and life cycle assessments in producing microalgae biodiesel via a continuous microalgal-bacterial photobioreactor loaded with wastewater

Life cycle assessments of microalgal cultivation systems are often conducted to evaluate the sustainability and feasibility factors of the entire production chain. Unlike widely reported conventional microalgal cultivation systems, the present work adopted a microalgal-bacterial cultivation approach which was upscaled into a pilot-scale continuous photobioreactor for microalgal biomass production into biodiesel from wastewater resources. A multiple cradle-to-cradle system ranging from microalgal biomass-to-lipid-to-biodiesel was evaluated to provide insights into the energy demand of each processes making up the microalgae-to-biodiesel value chain system. Energy feasibility studies revealed positive NER values (4.95–8.38) for producing microalgal biomass but deficit values for microalgal-to-biodiesel (0.14–0.23), stemming from the high energy input requirements in the downstream processes for converting biomass into lipid and biodiesel accounting to 88–90% of the cumulative energy demand. Although the energy balance for microalgae-to-biodiesel is in the deficits, it is comparable with other reported biodiesel production case studies (0.12–0.40). Nevertheless, the approach to using microalgal-bacterial cultivation system has improved the overall energy efficiency especially in the upstream processes compared to conventional microalgal cultivation systems. Energy life cycle assessments with other microalgal based biofuel systems also proposed effective measures in increasing the energy feasibility either by utilizing the residual biomass and less energy demanding downstream extraction processes from microalgal biomass. The microalgal-bacterial cultivation system is anticipated to offer both environmental and economic prospects for upscaling by effectively exploiting the low-cost nutrients from wastewaters via bioconversion into valuable microalgal biomass and biodiesel.

Open cultivation of microorganisms in water‐in‐oil Pickering emulsions stabilized by stearate microparticles

AbstractWe report a long‐term open cultivation of model microorganisms in water‐in‐oil (W/O) Pickering emulsions stabilized by food‐grade calcium stearate microparticles without contamination. W/O Pickering emulsions were successfully prepared using calcium stearate microparticles in tetradecane. Effect of microparticle concentration on the emulsion's Sauter mean diameter was investigated at various hold‐ups. As a result, the smaller the hold‐up, the smaller was the change in Sauter mean diameter due to the microparticle concentration. It was found that Sauter mean diameter of the emulsions was almost constant for 2 months. Model microorganisms Escherichia coli and Bacillus subtilis solubilized in the emulsion were stationary cultivated in the air‐exposed state. The viable cell ratio temporarily decreased at the beginning of cultivation but then increased continuously with cultivation time after 28 days. Furthermore, there were no contamination for 28 days in the air‐exposed state of the emulsion solution containing a culture medium without microorganisms. It was also shown that the growth rate of the microorganisms in the emulsion system is significantly lower than those in conventional cultivation systems. Thus, the calcium stearate Pickering W/O emulsion system is suitable for a long‐term “open” cultivation of microorganisms without the use of any special equipment such as a jar‐fermenter.