Citrus reticulata ‘Shiranui’
Shiranuhi Town, Uki City, Kumamoto Prefecture is said to be the birthplace. It was probably named after the place name. Dekopon（Citrus reticulata Siranui）is a registered trademark owned by the Kumamoto Prefecture Fruit Agricultural Cooperative Association. Under the umbrella of the japan horticultural agricultural cooperative association: Shipped through an agricultural cooperative association with JA and citrus production. Only those who meet certain standards to maintain high quality can use the name. It was shipped through the National Federation of Citrus Agricultural Cooperatives with a sugar content of 13 degrees or more and an acidity of 1 degree or less.
Shikoku Electric Power’s Ikata Power Station Unit 3 (PWR, 890,000 kW) resumed power generation at 18:00 on December 6, 2021 for the first time in about two years. After entering regular inspections in December 2019, in January 2020, the Hiroshima High Court received a provisional injunction to suspend operation. It was unable to operate because the installation deadline for the “Severe Accident Response Facility” (special heavy facility) was reached. In February 2020, Shikoku Electric Power filed an objection to the Hiroshima High Court, and since then, has endeavored to assert and prove the safety of the aircraft, and in March 2021, received a decision to revoke the provisional injunction order to suspend operation. In addition, the special heavy facility started operation on October 5th. Ikata Unit 3 seems to have restarted the reactor on December 2, ahead of the winter power demand season, and has resumed power generation. After the final inspection (comprehensive load performance inspection) by the Nuclear Regulation Authority, full-scale operation was resumed. According to a report compiled in October by the Organization for Cross-regional Coordination of Transmission Operators, which verifies power supply and demand, the reserve margin for power supply in the Shikoku area this winter warned that “beware of trouble with generators” nationwide. At 3.9% in February, the situation was extremely severe, barely exceeding the 3% required for stable supply. In particular, the deficit of four companies including Tohoku Electric Power, Chugoku Electric Power, and Hokuriku Electric Power is the largest ever, with Tokyo Electric Power Holdings (HD) falling into the red of 650.9 billion yen in 2022. However, Shikoku Electric Power Co. is the only company to post a profit as it is able to reduce fuel costs through the operation of Unit 3 of the Ikata Nuclear Power Station (Ikata Town, Ehime Prefecture). Lessons Learned from the Fukushima Daiichi Nuclear Power Plant Accident Based on the overview of the new regulatory standards, Shikoku Electric Power. On the day of enforcement, it seems that Ikata Nuclear Power Plant Unit 3 submitted an application for conformity review to the standards. Application for permission to change the installation of a nuclear reactor based on the Reactor Regulation Act. At the same time, it seems that there was prior consultation with Ehime Prefecture regarding changes to equipment, etc. based on the safety agreement. Then the Nuclear Regulation Authority. After about two years of review at review meetings, field surveys, and public comments, on July 15, 2015, permission was granted to change the installation of the nuclear reactor on the basis that it complied with the standards. In Ehime Prefecture, along with the review by the Nuclear Regulation Authority, It seems that the nuclear safety subcommittee, which consists of experts in nuclear reactor engineering and earthquake engineering, has confirmed safety. After about two years of deliberations, in August 2015, it was confirmed that the results of deliberations by the Nuclear Regulation Authority were appropriate. March 11, 2011, Pacific Ocean in the Tohoku region. A large tsunami caused by an offshore earthquake hits the Fukushima Daiichi Nuclear Power Station of Tokyo Electric Power Company, causing an accident in which a large amount of radioactive material leaks. In this accident, the tsunami and earthquake caused the safety functions to go out all at once. The loss and subsequent severe accident could not be stopped. The Nuclear Regulation Authority, which was established after the accident, not only learned the lessons from the Fukushima Daiichi Nuclear Power Plant accident, but also based on the latest technical knowledge and the safety standards of international organizations such as the IAEA (Vienna, Austria: International Atomic Energy Agency). A new regulatory standard for nuclear power plants with enhanced measures against accidents was formulated and enforced on July 8, 2013. The seismic performance “Earthquake ground motion determined by specifying the epicenter” seems to have been selected through scientific research for each of the three earthquake generation mechanisms. Measures without specifying the epicenter. The seismic motion to be determined is the epicenter and active faults and difficult past inland. Observation records of crustal earthquakes. 2004 Hokkaido Rumoi branch office Nanbu Earthquake (Area of shifted part × amount of shift × hardness of rock ≒ Mw5.7), 2000 Western Tottori Earthquake (Mw6.6) seems to have been selected（Standard Seismic Motion Safety evaluations are being conducted based on new understanding as a result of surveys of earthquakes and geological features covering a broad range of details [Earthquakes with specifi ed epicenters at each site] Based on active fault evaluation by the Headquarters for Earthquake Research Promotion [Earthquakes with unspecifi ed epicenters] Based on the results of examination of the Hokkaido Rumoi–Nanbu earthquake, a new standard seismic motion of Ss-2 (620 gal) has been added. 「Standard seismic motion used for mission-critical base-isolated structures」The Ss-L (400 gal) standard seismic motion for use in anti-seismic designs for mission-critical base-isolated structures was added for use in creating base-isolated structures that can withstand a mild, drawn-out earthquake Standard Tsunami Rather than assuming that our current store of knowledge and data is all there is, our safety evaluations are conducted from the perspective that something may occur that exceeds what is known. The standard tsunami has been reevaluated to cover tsunamis stemming from an interplate earthquake (Mw 9.1) in the Ryukyu Trench, to a generator (in the vicin-ity of the sluice gate) maximum high-water mark of around 5 m above sea level (at high tide). The generator’s maximum run-up height, taking into account the difference between land subsidence and the tide level, is around 6m above sea level. A protective wall has been placed around the seawater pump area. At 5 m above sea level with a retention dam located in front of the sluice to allow the water to drain when the wave recedes as well. Response to New Standards (main efforts at the Sendai nuclear power plant) Standard Seismic Motion for the Sendai Nuclear Power Plant Speed (cm/s2) Period (s) Ss-1 standard seismic motion (540 gal) Ss-2 standard seismic motion (620 gal) formulated based on Examination of the Hokkaido Rumoi–Nanbu earthquake Outline of the Hokkaido Rumoi–Nanbu Earthquake Ryukyu Trench (Assumed interval) Nagasaki Spur fault Sendai Nuclear Power Plant Seawater pump area Barrier wall Barrier trench Retention damz Date: December 14, 2004 Rumoi Magnitude（Seismic Activity for All of Japan during December 2004）: Mw5.7 Established position of standard tsunami）. Also, the design basis seismic ground motion is the maximum quake that is expected to affect the site based on the geology, ground structure, seismic activity, etc. of the site of the nuclear power plant and its surroundings. The design basis seismic ground motion for the Ikata nuclear power plant was changed from the conventional 570 Gal to 650 Gal (cm/sec2, the standard gravity on the earth is 980 Gal) or more, seismic intensity 5 upper, and about 200 Gal or more, seismic intensity 6 weak. , about 350 Gal or more, seismic intensity 6-upper, about 600 Gal or more, seismic intensity 7). An earthquake that occurred with its epicenter in Aki-nada, and caused relatively great damage in Hiroshima Prefecture, the eastern part of Yamaguchi Prefecture, and Ehime Prefecture, which were close to the epicenter. We confirmed that the effects of oceanic intra-plate earthquakes such as the “N-year Geiyo earthquake” or a name with the year) are appropriately set, taking into consideration the uncertainties of natural phenomena. The shaking caused by an earthquake is greatly affected by the characteristics of the observation point (distance from the epicenter and geological structure). Even for earthquakes of the same magnitude, the closer they are to the epicenter, the stronger the tremors, and the farther away they are, the smaller the tremors. In fact, during the Iyonada earthquake that occurred on March 14, 2014, 230 Gal was observed at Minatoura, Ikata Town, which is only 4 km away from the Ikata power plant. It was 45 ~ 56 Gal. For this reason, design basis seismic ground motions are created based on thorough investigations of active faults, plate conditions, and underground geological structures around the nuclear power plant that serves as the epicenter. It does not seem to be something that should be applied as is. Tsunami resistance performance includes the specific source of tsunami (wave source) and its impact assessment (maximum water level). Nankai Trough earthquake +2.45m. Earthquake caused by submarine active fault (Median Tectonic Line fault zone ~ Kyushu side fault zone approx. 130 km) +7.56 m. Five landslides +6.35 m near the site. Mt.Tsurumi collapsed +2.24 m. Furthermore, taking into consideration the overlap of the Nankai and marine active faults, +8.12m. A standard tsunami is a tsunami that affects the site due to earthquakes, landslides, volcanic phenomena, etc. around the site of the nuclear power plant. It seems to be the largest tsunami expected to hit. The maximum water level of the standard tsunami at the Ikata Power Station was raised from 4.09 m to 8.12 m in the process of national review. It seems that they have confirmed that the effects of the collapse of Mt. As a flow of tsunami resistance evaluation, the tsunami height used for tsunami resistance design seems to be 8.7 m, considering the maximum water level of the standard tsunami, ground subsidence and tidal level variation, but the building with important safety facilities is installed at a site height of 10 m, so it seems that there is no risk of being affected by a tsunami. The water level caused by the standard tsunami varies depending on the location, and the highest water level near the Ikata Power Station site is estimated to be +8.12m at the judgment point. In tsunami resistant design. In addition, ground subsidence and Consideration of tidal variation and the water level is +8.7m evaluation. Cause of tsunami (target tsunami Selection), Tsunami evaluation (calculation), Selection of standard tsunami Confirmation of safety against standard tsunami. Interplate earthquakes, crustal earthquakes caused by active faults in the ocean, landslides on land and under the sea, slope failures, volcanic phenomena, combinations of factors (Ocean intra-plate earthquakes are excluded because their epicenters are deep and do not cause large changes to the seafloor, so they do not produce large tsunamis.) Numerical simulations are conducted with uncertainty taken into account. Formulation−On sites where facilities belonging to Class S (the highest seismic resistance) are installed, run-up waves due to the standard tsunami must not reach or flow from the ground. An important safety mechanism due to a decrease in water intake due to water level fluctuations. No effect on ability etc. T.P. : Tokyo Bay mean sea level. Futanazu is an agricultural village centered on citrus cultivation. Ikata Town, Nishiuwa County, is located on the Sadamisaki Peninsula, the westernmost point of Shikoku. The Uwa Sea side to the south is a coast of gentle white sand, and the Seto Inland Sea side to the north forms a ria coastline, where people’s lives are alive in beautiful nature. Blessed with a warm maritime climate with an annual average temperature of 16°C, it is full of local love. It seems that each and every one of us is striving to create a town full of vitality and moisture in order to inherit, nurture and pass on this hometown full of warmth and kindness to future generations. Citrus farming system in Ehime and Nanyo: Date of certification as Japanese Agricultural Heritage: February 15, 2019. Certified organization / Organization name: Ehime Prefecture Nanyo Regional Agricultural Heritage Promotion Council / Organizational structure: (Municipality) Uwajima City, Yawatahama City, Seiyo City, Ikata Town, Ainan Town, Ehime Prefecture (Agricultural organizations) Nishiuwa Agricultural Cooperative, Higashiuwa Agricultural Cooperative, Ehime Minami Agricultural Cooperative, Nanyo Water Land Improvement District Union (Cultural organizations) Yawatahama City Cultural Association, Machimi Folk Museum (Natural Organization) NPO Kawauso Revival Project (Tourist Organization) Uwajima City Tourism Association, Minato Koryukan (Yawatahama Minato), Seiyo City Tourism Association, Ainan Town Tourism Association, Uwajima Industry Promotion Public Corporation (Kisa) Iya Hiroba) (Exchange groups) Shikoku Seiyo Geopark Promotion Council, NPO Sada Promontory Tourism Association, Ainan Green Tourism Promotion Council (Regional promotion organizations) Uwajima Chamber of Commerce and Industry, Yawatahama Chamber of Commerce and Industry, Honai Town Chamber of Commerce and Industry, Ikata Town Chamber of Commerce and Industry, Seiyo City Chamber of Commerce, Yoshida Mima Chamber of Commerce, Tsushima Town Chamber of Commerce, Ainan Town Chamber of Commerce and Industry. Certified area name: Ehime Prefecture Nanyo area (Uwajima City, Yawatahama City, Seiyo City, Ikata Town, Ainan Town 3 cities and 2 towns). Explanation of the location of the certified area Geographic coordinates (latitude and longitude) North latitude (extreme north) 33° 32′ 29″ (extreme south) 32° 57′ 08″ East longitude (extreme east) 132° 35′ 24″ (extreme west) 132° 05′ 30″ Access from major cities to certified areas: From Ehime Prefectural Office (Matsuyama City), it takes about 50 minutes to Yawatahama City and about 1 hour and 30 minutes to Uwajima City (by JR train). Geographical features: A typical Rias coastal zone with steep mountain footings reaching the coast and a complex coastline.)) Population (including beneficiaries) 182,895 (including 6,730 unshiu oranges and 5,783 other citrus fruits). Ikata Town is located on the Sadamisaki peninsula, which is the longest and narrowest peninsula in Japan, jutting out into the Hoyo Strait, at the westernmost point of Shikoku. A unique history and culture that has been polished by its peculiar topography and rich nature seems to be deeply rooted in this town. There are 32 designated cultural properties in the town (1 nationally designated cultural property, 2 prefecturally designated cultural properties, 29 town designated cultural properties) and 3 nationally registered cultural properties. Sadamisaki Lighthouse (shono): A white lighthouse that towers over the westernmost point of Shikoku and the westernmost tip of Japan’s longest and narrow Sadamisaki Peninsula. Only 13.5 km away is the Kanzaki Lighthouse in Oita Prefecture, which serves as a signpost on the sea and illuminates the ships going. Built in 1918, expanded in 1941. Reinforced concrete construction, construction area 82 m2, height 18 m, 1 unit. Suga Park: Suga Park is a sandbar in Mitsuku Bay. In addition to enjoying sea bathing and camping, ‘the Seto no Hanayome Matsuri（Minatoura: An annual summer festival held every August in front of the Seto townspeople center. At the venue, you can enjoy a bridal show and a song show related to the bride of Seto.）’ held in August every year features windsurfing, barbecues, fireworks displays, and more. You can enjoy recreational fish such as horse mackerel and grunt mainly in spring and summer. Setokaze no Oka Park: From the observatory, you can see the magnificent scenery of the windmills along the ridge and the beautiful nature of the Sadamisaki Peninsula. The JA Nishiuwa Misaki Citrus Cooperative Fruit Sorting Group (Misaki Co-Selection) is a medium-sized citrus fruit that takes advantage of the mild climate surrounded by the Uwa Sea and the Seto Inland Sea on the Sada Misaki Peninsula, which has Cape Sata, the southernmost tip of Shikoku, and an environment suitable for cultivation. famous for the cultivation of Kiyomi Tangor, jointly selected by Misaki, is a combination of Japanese Wenzhou mandarin oranges and foreign citrus fruits. It is a memorable variety that will remain in the history of Japanese citrus fruits, as the pioneer of the varieties that were introduced, and also the parent of these. Sumitomo Bakelite Co., Ltd.’s P-Plus is used to deliver the juicy taste to consumers nationwide. The Misaki Citrus Cooperative Sorting Committee is a group of farmers who deliver citrus fruits grown in the Misaki district of Ikata Town. The area used to be a municipality called Misaki Town, Nishiuwa County, but in April 2005, it merged with Ikata Town and Seto-cho on the peninsula and became Ikata Town. Located at the tip of Sadamisaki Peninsula, which is said to be the longest and narrowest in Japan, it is the closest town in Shikoku to Kyushu. In addition, National Route 197, which runs through the peninsula, used to be so difficult that it was called. Don’t go on a terrible road. , It seems that you can go from Misaki to Yawatahama in less than an hour. The Melody Line, which runs near the summit, is known as a scenic driving course, and is said to be visited by many tourists. In addition, ferries run every hour from Misaki Port in the center of the district to Oita Saganoseki Port in Kyushu, and every six hours to Beppu Port. The Misaki area, which is close to the sea, is also rich in seafood, and it seems that the cape horse mackerel and cape mackerel, which are caught in the same waters as the Seki horse mackerel and Seki mackerel, are their specialty. There are restaurants that serve fresh seafood in the area, and many tourists visit promontory for this purpose. The Sadamisaki Lighthouse is about ten kilometers from Kyushu on the other side of the river. It seems that this sea area has been watched over since the Taisho era. The Sadamisaki Peninsula was formed on Japan’s largest fault, the Median Tectonic Line, as a way to create fields that are piled up to the sky. I had to build up the fields. These terraced fields of stone walls were made by our predecessors who carried rocks on their shoulders while carrying bumps on their shoulders, and they seem to be widely seen in the Sadamisaki Peninsula and its surroundings. Its scale seems to be comparable to that of ancient ruins around the world. Monorail seems to be active for transportation because there is little room to build a road in the park. The transport vehicle has a device that stops at the end point, and it seems that it can be transported even if the operator is not attached to the transport vehicle. Also, the wind that runs across the ocean mercilessly attacks the trees. It’s not uncommon for typhoon-like strong winds to blow, and when a real typhoon hits, it’s said that the tide can swirl up and kill trees with salt. It seems that places where delicious citrus can be grown are also prone to natural disasters. In order to prevent the fruit and trees from being damaged by the wind, this place seems to be protected by a windbreak fence that makes it look like a Western castle. It seems that people living on the Sadamisaki Peninsula used water from wells (communal wells) and valley rivers until water supply facilities were built. However, due to the lack of water volume and quality, we tried to filter it with gravel, but due to the small size of the water, it became turbid when it rained and the water quality was polluted. It seems there were many. Among the peninsula, the former Misaki town is said to be Nanyo’s most water-poor area, and in Kushiya Shono, meteoric water facilities were installed to filter rainwater and use it for drinking. From the 1945s to the 1955s, a simple water supply system was installed, making daily life more convenient and improving hygiene. However, when water shortages hit in the summer, water facilities became unusable in some districts, and it seems that there were times when daily life was hindered without water trucks supplying water. The struggle to solve the water problem in this area seems to have continued until the Nomura Dam was completed in 1982 and Nanyo water was delivered to the former Misaki town in 1992. The Kawanagata area is said to have been an agricultural and fishery community facing the Uwa Sea, on the south side of the eastern part of Sadamisaki in Ehime Prefecture. The Uwa Sea side of Sadamisaki is a ria coastline with many ingress and egress along the coastline, and villages have developed at the head of the bay at the back of the bay. During the Edo period, it belonged to the Uwajima domain. In addition to agriculture, the main industry in this area seems to have been sardine fishing on the coast. Sardines were processed into dried sardines, and it seems that they were an important source of revenue as a monopoly of the clan. According to “Seikai Junken Magazine（予陽塵芥集 野沢弘通編述, 伊予国旧蹟考 宍戸大成編述）”, around 1661-1688, Kawanaga Taura had 37 houses, 78 boats (including 60-80 masonry piles and 2 boats, and 76 fishing boats), and the number of main water (sailor) was 408 (including 62 people (62 role sailor), but it seems that the number of main waters and boats included those of neighboring ura. In addition, in this area, peddling and migrant work have been done since ancient times during the off-season for agriculture and fishing in winter, and it seems that there was a migrant worker to a sake brewery known for ‘Ikata chief brewer at a sake brewery’. There are countless mansions, and you can see that the wealth accumulated during the Uwajima clan’s monopoly on dried sardines still remains today. The image of a fishing village is hardly felt in the townscape. Now, most of them are salaried workers, many of the households are citrus farmers, and some of them are engaged in fishing. “Shiranuhi Orange: Sumo Mandarin” : You have to give a lot of nutrition, and you need to irrigate and fertilize well when the flowers bloom and become young. Born in 1972 in Minamishimabara (Kuchinotsu Town), Nagasaki. It is famous as a fruit born by crossing “Kiyomi Orange（Citrus unshiu × sinensis）” and “Ponkan（Nakano No.3 Satsuma Mandarin: Citrus reticulata var poonensis (Hayata) H.H. Hu; It is cultivated in Nepal, South East Asia countries, southern China, Taiwan, and Japan. It is said to be native to the ‘Suntara’ region of India. It was first introduced in Japan in 1896 when Taiwan Governor General Mr. Sukenori Kabayama sent seedlings to Kagoshima for transplantation.）”. After ripening well on the tree, store for half a month to a month. It seems that the sourness will be removed and the sweetness will increase. Cultivation of Citrus Unshiu, which uses less water to increase sugar content, requires a slightly different cultivation method. Since around 1975, the native Shiranui Town and the surrounding area have been searching for citrus fruits to replace Amanatsu（Citrus natsudaidai); sweet form of Chinese citron. Iheard that the shipping period of medium late-ripening citrus (e.g. pomelo) is from February to the end of May. After that, it seems that it could not be shipped because it was difficult to keep it fresh. Under these circumstances, the Ehime Prefectural Agriculture, Forestry and Fisheries Research Institute Fruit Tree Research Center Mikan Research Institute and the Kumamoto Prefectural Agricultural Research Center Fruit Tree Research Institute have jointly developed a technology that can be shipped until summer with manufacturers of materials and chemicals. Use of MA packaging, a packaging technology that keeps freshness for a long time with special packaging and antibacterial preparations, minimizes respiration of fruits and vegetables, and prolongs freshness. Since fruits and vegetables are still alive and breathing after harvesting, they consume nutrients and may lose their freshness. Therefore, it seems that the film material with fine pores on the surface will be wrapped in this film material to make the air inside low oxygen and high carbon dioxide. By suppressing breathing, it slows down the aging of the skin and flesh and keeps the freshness. So to speak, it seems that mandarin oranges are in a half-hibernating state. Another technique is the application of an extract preparation of the perennial plant “Capillary wormwood; Artemisia capillaris” of the Asteraceae family. I heard that Capillary wormwood extract is safe and has been approved for use in foods, and contains ingredients with antibacterial activity. By applying this extract to the peel of medium late-ripening citrus (e.g. pomelo), it seems that the effect of suppressing rot and peel damage can be obtained. By combining these materials that help maintain freshness with the storage temperature control for each variety, it seems that summer shipments can be realized. According to the voices of the people concerned, it took nearly 10 years to jointly research with the company on the temperature to be controlled for each variety and the difference in the amount of the drug to be applied to the pericarp, and to put it into practical use. The development effort would have been immeasurable. This shipping technology began to be introduced in the market in 2012, and it seems that full-scale commercialization is progressing. Ikata Town is a major producer of mandarin oranges representing the citrus kingdom of Ehime. The sun pouring down from the southern sky, the reflection from the Uwa Sea that spreads below us, and the reflection from the stone walls of the terraced fields. Give me Shiranui mandarin oranges have a lovely silhouette with a distinctive silhouette that pops out around the hem. Those with a sugar content of 13 degrees or more and C6H8O7 of 1% or less and shipped from JA all over Japan are known under the brand name “Dekopon.”
Surrounded by the Uwa Sea and the Seto Inland Sea, it has a warm climate, well-drained soil, and plenty of sunlight, all of which make it ideal for growing citrus fruits. In addition, since it is a frost-free area where no frosts fall, citrus fruits that have a great influence on the juicy taste that survives the winter are born as a result of the efforts and love of the producers. Like humans, plants also breathe, are bathed in plenty of light, and are naturally nurtured by their growers. I think that this natural event will be happy.
Dekosuke mandarin orange: A unique sourness harmonizes with the solid sweetness, and the unique taste that makes you feel the refreshing sweetness that other citrus fruits do not have stands out. In addition, the skin can be peeled by hand, and there are almost no seeds. Contrary to the seemingly tough appearance, the skin is surprisingly easy to peel, and the sac is soft, so you can easily eat it as it is regardless of age or gender. Loved without fail.
Generic term for varieties other than unshu mandarin oranges that are usually harvested from January to May
Middle-late-ripening citrus (e.g. pomelo) production zone at the tip of Sadamisaki Peninsula (Kiyomi Tangor, Sunfruit, Amanatsu, Dekopon, Iyokan, etc.). Kiyomi Tangor is one of the leading producers of Kiyomi Tangor in Japan. The quality of Kiyomi, which is cultivated in frost-free conditions on the peninsula, is high, and it is popular as a juicy citrus fruit in spring. I can understand the meaning of being pleased by everyone.