【製品名(商品名)】
シルクスイート®
【種類】
Ipomoea batatas L.
【生産地】
千葉県成田市多良貝（JAかとり香取西部園芸部, JAグループ千葉）
【名前の由来】
It has a silky smooth texture and an elegant sweetness.
【主な特徴】
Katori western part Horticultural Department Sweet Potato Development Study Group: Item, Kansho, Crop type Normal registration date, Number of registrations on January 13, 2022 8. Variety, Daiei Manamusume sweet potato (Kokei No. 14), Cultivation characteristics, unified cultivation, chemical nitrogen content (kg / 10 a) 1.5 kg Reference: 1/2 of the customary amount 1.5 kg Chemically synthesized pesticides (components) used 10 times Reference: 1/2 the customary number of times 6 Cultivation records Book: Planned shipment quantity, 125,050 kg, Shipment start (planned) date, Shipment end (planned) date in early August, Shipment destination designated market consignment, direct sales, direct sales. Strengthening production areas through stable supply of high-quality sweet potatoes. Activity period: From 2012 (ongoing). It seems that sweet potatoes occupy 80% of the planted area at JA Katori West Gardening Department. In recent years, year-round planned shipments have been required, but since the meat quality and sweetness change depending on the storage method, it seems that maintaining stable quality for long-term storage shipments was an issue. Also, aiming for a stable supply of high-quality sweet potatoes year-round, they are working on improving storage methods, verifying storage conditions to improve taste, and formulating storage rules. As a result, by improving the storage system and demonstrating optimal storage conditions, it seems that it has become possible to ship sweet potatoes of excellent quality stably from early shipment to long-term storage. As a concrete result, we have realized year-round shipments by improving the storage system, and introduced low-temperature storage facilities to 21 households in three years using the Chiba Prefecture project. Stable quality even in long-term storage, combined with existing storage. In addition, it seems that it is possible to ship the anniversary plan. In addition, it seems that it can be harvested and stored from the time of high temperature and can be shipped early after saccharification. It seems that the use of forklifts has improved work, advanced shipping and improved taste. Establishment of early shipment of Daiei Manamusume sweet potatoes: The shipment rate within the year has increased (2012 production: 13%, 2013 production: 20%), shipments during high unit prices have increased, and the average unit price has increased. Expansion (2011: 47 ha, 2014: 110 ha). It seems that a storage rule of 30 days or more has been established as a result of the high market evaluation of “Beniharuka sweet potato”. In addition, the rule seems to be well received by actual users for the quality and storage of Beniharuka Sweet Potatoes that will be shipped within the year. The storage rules have spread throughout the prefecture, and guidance is being given to improve the activities of extension instructors and storage methods. 2012-2015: Utilizing prefectural projects to establish constant temperature and storage facilities, and promote low-cost, long-term storage methods that utilize existing storage facilities. It seems that verification of storage conditions for improving the palatability is also being carried out. 2012: Verification of promotion of saccharification when “Beniharuka Sweet Potato” is stored at a lower temperature than usual. 2013: Verification of storage conditions and number of days to ensure that Daiei Manamusume Sweet Potato tastes good even with early shipment. Examine and formulate storage rules for Beniharuka Sweet Potatoes. 2010-2012: At the “Sweet Potato Strategic Production Area Development Council” organized by relevant organizations in the Inba and Katori regions, storage rules for “Beniharuka Sweet Potatoes” were considered and formulated. From 2013: Promoting rule-based sales to 4JA, where sweet potato production is thriving. Enhancing production areas through stable supply of high-quality sweet potatoes from Chiba Prefecture: As a background to this initiative, sweet potato production is thriving in the Inba / Katori region, which is located on the Hokuso Plateau in Chiba Prefecture. In wide-area cooperation, we are working to promote outdoor vegetable production areas centered on sweet potatoes. Within its jurisdiction, the JA Katori-Katori Seibu Horticulture Club is organized in the eastern part of Narita City, and since 2012, sweet potatoes have accounted for 80% (616 ha) of the area planted with vegetables. In addition to the main variety “Beniazuma sweet potato” and the established local brand “Daiei Manamusume sweet potato (Kokei No. 14)”, in recent years, sticky and sweet “Beniharuka sweet potato” has been planted. There is in particular, regarding Beniharuka sweet potato, the cultivar composition ratio was 2% of his production in 2010, but 18% of his production in 2014, and it seems that the planting has increased significantly along with the increase in demand. In recent years, in addition to the traditional demand for fruits and vegetables and processed sweet potatoes, the demand for roasted sweet potatoes has increased, and it seems that sweetness is becoming more important. In addition, demand for this excellent agricultural product seems to require planned shipments throughout the year from August, when shipments of new sweet potatoes begin, to July of the following year. On the other hand, since the quality and sweetness of the meat changes depending on the storage method and period, it seems necessary to sell the cultivars that take advantage of the characteristics of the cultivar. In particular, it seems that there is a demand for early shipment of “Beniharuka sweet potato” and “Daiei Manamusume sweet potato”, which are stored and saccharified after harvesting and then shipped devil. In addition, it seems that there was a problem of quality deterioration such as damage during long-term storage. While competition with production areas in other prefectures is intensifying, we work in cooperation with related organizations to solidify trust in production areas by emphasizing taste and supplying high-quality, stable sweet potatoes. Was working on As an instruction to improve the storage method, sweet potatoes have long been stored according to the shipping season, and it seems that the problem of long-term storage has been that the quality deteriorates as the outside temperature rises. As a solution, we are promoting the introduction of constant temperature storage that can control the temperature. In 2012, the JA Katori Seibu Horticultural Department introduced storage facilities utilizing the prefecture’s subsidized project know! 3 units in FY2013, 9 units in FY2014, 9 units in FY2015, and 3 units in FY2015. Both of these storages can be cooled, and the temperature and humidity can be maintained in an environment suitable for storing sweet potatoes, so it seems that it is possible to ship them for a long time while maintaining good quality. In fiscal 2013 and fiscal 2014, we held on-site study meetings on storage to improve storage technology. In addition to dedicated storage, we conduct on-site inspections to find out the points of storage using conventional storage methods such as semi-underground storage and simple houses (pipe houses are insulated with styrofoam plates, etc.), and proactively improve storage methods in each management. Encourage. In addition, since exclusive storage is expensive, it seems that adding a cooling device to the existing storage will enable long-term storage at low cost. In fiscal 2014, 33 households installed cooling equipment, enabling them to ship high-quality sweet potatoes over the long term. It seems that the number of producers has increased. In recent years, sweet potatoes have been sold with an emphasis on taste as a verification of the promotion of saccharification by storage to improve taste. Starch of sweet potatoes is converted into sugar by storage. It becomes sweeter and sweeter. For early shipment, we verified the relationship between storage conditions and taste for “Daiei Manamusume Sweet Potatoes” and “Beniharuka Sweet Potatoes” in cooperation with the Chiba Prefectural Agriculture and Forestry Research Center. “Daiei Manamusume Sweet Potato” seems to be stored for more than 45 days before shipping in order to promote saccharification, but it seems that advance evolution of shipping time was desired. From 2014, October 13th is “Sweet Potato Day” (set in 1987 by the “Kawagoe Potato Friends Association” of Kawagoe City, Saitama Prefecture as “Sweet Potato Day”). Investigation of storage conditions and number of days to ensure sufficient sweetness even at shipment. When the storage temperature was changed between 8°C and 13°C for the number of storage days, it was found that the lower the temperature, the shorter the number of days required for saccharification. Beniharuka sweet potatoes were stored at 11°C and 13°C for 2, 4, and 8 weeks to verify whether storage at a lower temperature than the normal storage temperature (13-15°C) can promote saccharification. , Analyzing the taste of baked sweet potatoes. As a result, it was found that the lower the storage temperature and the longer the storage period, the more viscous it becomes, the more sweet it becomes, and the better it tastes. Aiming to cultivate a production area for a new taro variety, Chibamaru Taro: The Katori area is a production area for edible sweet potato, and it seems that improving soil fertility to improve its quality is an issue. Under such circumstances, a new variety “Chibamaru Taro” was bred, and as one of the crop rotation crops, JA Katori (Katori Seibu Horticultural Department) received permission to supply seed potatoes, and “Katori Agricultural Cooperative Horticultural Department Liaison Consultation” Love Chibamaru Section Meeting” has been organized. The center seems to be working on the cultivation of production areas because the introduction and expansion of “Chibamaru Taro” will lead to stable management and new regional development that utilizes irrigation water. The background of the issue is that the taro production in the jurisdiction peaked at 243 ha in 1991, and has declined to about 120 ha. This was mainly due to the slump in prices, and the expansion of imports from China was a major factor. It seems that it is considered to have a strong influence. Consumers and producers alike are spending more and more on electricity and gas, as well as soaring fertilizer prices. The expansion of the area of “Chibamaru” will regain the market share lost to imports, and as a variety that enhances the brand power of taro, the prefectural production and sales promotion section is planning and implementing initiatives for advantageous sales. Related projects, agribusiness support and dissemination activity project (leader support section), new production area development support measure project (Production and Sales Promotion Division) are being used to make efforts. In addition, as a technical examination by cultivation test, the prefectural standard for cultivation of “Chibamaru” is flat ridges, but the cultivation method of sweet potatoes in the jurisdiction was often planted using high ridges of edible sweet potatoes, so from the beginning it was “no buds”. Since 2007, a comparative test of 35 plots in 20 fields was set up for three years from 2007, and it seems that investigations are being conducted. In addition, it seems that they have worked together with the Agriculture and Forestry Research Center Hokuso Horticultural Research Institute’s Upland Farming Laboratory to solve the problem. On the other hand, in seed taro production, JA Katori collaborated with the Agriculture and Forestry Research Center’s Breeding Research Institute to conduct growth surveys and storage tests, and worked to secure a stable supply of seed taro. In order to promote planting and support organization and cultivation, we cooperated with the Eastern Hokuso Land Improvement District and held briefing sessions at each district meeting, using promotion materials for chibamaru taro. Narita City, Chiba Prefecture: It is famous as a core city located in the northern center of Chiba Prefecture. The north borders Ibaraki Prefecture across the Tonegawa River（The River Tone meanders winds its way through the plains of Kanto.）. It borders Inba（Inba Prefecture: established on August 8 (old lunar calendar) in 1868.）Bog, which is designated as a prefectural natural park in the west, and Katori City（“Daikyosai Shinsen” in Daikyosai Festival of Katori-jingu Shrine, Katori city, Chiba Prefecture. Mid-July and Mid-October: Sawara Gion Festival (Katori City). Late September: Autumn Grand Festival held at Katori Gokoku-jinja Shrine, Katori City (performed by shrine maidens from Katori-jingu Shrine). Sawara prospered since the Edo period for its water transportation, allowed by the Tonegawa River.）in the east. The Nekona River runs to the west and the Osuka River（Water source elevation: 35 m）runs to the east. Industrial parks and golf courses are scattered in the hills from the north to the east. To the south is Narita International Airport, the gateway to Japan’s sky. The Narita district, which is the center of the city, prospers as the gate town of Naritasan Shinshoji Temple（Shingon-shu Chizan-ha）（Kancho: Since he was the chief priest of Hensho-ji Temple (Kyoto City) by Sarusawa-ike Pond in the Hirosawa area outside the capital city of Kyoto, he was called ‘Sarusawa no Sojo (priest),’ ‘Hirosawa Sojo,’ or ‘Hensho-ji Sojo. ‘My father is Atsumishinnou. The wooden statue of Fudo Myoo two youths (Kamakura period, an important cultural property) : Omotesando continues about 800 m from Narita station: Narita-Fudo）, which has a history of more than 1000 years. A city with many temples and shrines, a fusion of traditional and international appearances surrounded by abundant water and greenery. It has two faces, “quiet” and “moving”, in a natural environment rich in water and greenery. The area is 213.84 km2. Summers are short and warm, sultry, almost cloudy, winters are very cold, windy, almost sunny, and tend to be slightly humid throughout the year. World Federal Peace City Declaration（World Federalist Movement: WFM）: First declared on October 14, 1950 in Ayabe City, Kyoto Prefecture. October 31, 1958: As a religious tourism city, he agreed with the purpose of building the World Federation and decided to become an eternal peace city. It is an effort to establish permanent peace and promote the welfare of humankind all over the world（Declaration）. Non-nuclear city declarations（Peace declaration）: February 21, 1995: Perpetual peace in the world is a common wish of people all over the world. This year, Hiroshima（Toro Nagashi Ceremony as a Memorial Service for Atomic Bomb Victims in Hiroshima (Japan）.）and Nagasaki（Nagasaki National Peace Memorial Hall For the Atomic Bomb Victims: Hirano Town Nagasaki City）commemorated the 75th anniversary of the atomic bombings. Japan is the only country to have experienced atomic bombs in the world. Narita citizens seeking peace hope that Japan’s three non-nuclear principles will be fully implemented. PEST: Spodoptera frugiperda（J.E. Smith: Adults are about 37 mm long, and the appearance of males and females is very different. Only males have a yellow oblique spot in the center of the forewings. The last instar larva is about 40 mm long, and is characterized by a light-colored inverted Y-shaped pattern at the boundary between the compound eyes on the head and the forehead, and black spots on the tail. Eggs are deposited in clumps on the host plant and covered with the female’s body hair. This species is native to the tropical and subtropical regions of the Americas, and is adapted to warm climates. Adults migrate and disperse in North and South America every summer, but they seem to be unable to overwinter in regions other than warm regions. The distribution area of this species is North and South America, Africa (Egypt, sub-Saharan), Asia (India, China, Taiwan, South Korea, Thailand, Myanmar, etc.), and Oceania (Australia). So far, reports in Japan up to FY2020 indicate that plants confirmed to be parasitized by larvae are mainly grass crops such as fodder corn, immature corn (sweet corn), fodder sorghum, and sugarcane. In addition to gramineous crops, it is known to parasitize a wide range of crops such as Brassicaceae, Cucurbitaceae, Asteraceae, Solanaceae, Caryophyllaceae, Convolvulaceae, and Legumes. Larvae feed on plant stems, leaves, flowers and fruits. Young larvae infest leaves from the underside and disperse as they grow. It feeds heavily on the leaf sheaths of new leaves, and a large amount of excrement is scattered on the damaged parts. As a control measure, many larvae are found in fodder corn, sweet corn, and sorghum in Japan. If you find larvae that are suspected to be this beetle, immediately contact the pest control station.）: An extremely broad-eating pest of the family Noctuidae（Lepidoptera）. It damages more than 80 types of crops such as corn, rice, legumes, potatoes and vegetables. Outbreaks have been confirmed in various parts of the world, but the outbreak will be confirmed for the first time in Japan in July 2019. Early detection is important for the control of this species. It is harmless to humans and animals, and it is said that eating plants to which this insect is attached does not harm human health very much. Narita City Agricultural Center: Established on March 30, 1999 for the purpose of promoting Agriculture. Establish a regional farming system and promote rationalization and effective use of farmland ownership. Promote the strengthening of the agricultural management base, such as improving agricultural productivity and securing the training of bearers. Contributes to the development of regional agriculture and rural areas. Moved to Public Interest Incorporated Foundation from April 1, 2013. “Silk Sweet Potato”: Spring Kogane Sweet Potato (from the Ministry of Agriculture, Forestry and Fisheries variety registration website, Application number 10933 Date of application 1998/05/20 Date of publication of application 1999/03/18 Registration number 9914. “Kanto No. 103 sweet potato” × “Beniazuma sweet potato”. The plant type is creeping, the leaves are wavy and dentate heart-shaped, and the skin color of the potato is red as the primary color, purple as the auxiliary color, and yellow as the flesh color. It is a cultivar suitable for fruits and vegetables. The plant type is creeping, the plant is a little strong, the plant height is medium, the stem color and node color are a little high, the thickness is a little thin, the length is a little long, and the number of branches is small. Internode length is a little long, Stem hairs are a little less, Top leaf color is light green, No secondary color, Leaf color is green, Leaf shape is wavy/dentate cordate The size and vein color are medium, the nectar color is many, the length of the peduncle is short and the strength is strong, the shape of the potato is long spindle, the size is large, the basic skin color is red, and the auxiliary color is red. Purple, fairly dark shade, uniform distribution, yellow flesh color, faint striae, no cortical veins, slightly superior appearance, slow and fast sprout growth, somewhat frequent sprouts, high aptitude for early moat, Earl (a) Slightly heavy potato weight per hit, little or no carotene, slightly weak resistance to black spot, weak resistance to wilt, slightly weak resistance to Meloidogyne (Aschelminth phylum Nematode Chillenx) Beniazuma sweet potato (Developed by crossing “Kanto No. 859 sweet potato” and “Koganesengan sweet potato (Mating in 1958.)” at the Kyushu Agricultural Experiment Station in Ibusuki City, Kagoshima Prefecture. Fixed varieties selected and cultivated at the Agricultural Research Institute in Yotsukaido City, Chiba Prefecture. The name was registered in 1984, and the variety was registered the following year. As for the reason; It is native to Central and South America and mainly eats potatoes with thick rhizomes, but leaves and stems can also be used for food. It is easy to secure the amount of energy, and has the advantage of being able to produce even on thin land Potatoes are considered to be a crop that saves the world’s food crisis (It is thought that in the future, energy and food problems will become increasingly serious). It has excellent early hypertrophy and is shipped from an early stage by poly mulch and tunnel cultivation. Agricultural Experiment Station in Kochi Prefecture in 1945 :The exodermis is crimson, long-spindle-shaped, and the taste of early digging is very good, but the ecological characteristics and sprouting properties are not very good. Weak against Alternaria porri and Nekobu nematode, but strong against Negusare nematode（Pratylenchus）, it can be distinguished from others by the fact that there are more stem colors and leaf vein colors, and the skin color of potatoes is darker. Registration date 03/15/2002 The duration of breeder’s rights is 20 years Mr. Ishikawa, Mr. Miyazaki, Mr. Katayama, Mr. Tarumoto, Mr. Umemura, and Mr. Kumagai) × In “Benimasari sweet potato (1992), Kyushu Agricultural Experiment Station Upland Utilization Department Sweet Potato Hybridization Laboratory (now: NARO Kyushu At the Sweet Potato Breeding Laboratory, Field Crop Research Department, Okinawa Agricultural Research Center, we crossed and harvested “Kyushu No. 104 sweet potato”, which has excellent skin color and taste, and “Kyusei 87010-21 sweet potato”, which has excellent appearance and taste. , were selectively bred. “National Agriculture and Food Research Organization (Tsukuba City, Ibaraki Prefecture: Applicant)” It was bred by crossing breeding lines owned by the applicant, and the skin of the potato is red and the flesh is light. It is a yellow edible variety. “Black spot resistance” is rather strong, and “root-knot nematode resistance” is moderate. Compared to “Kokei No. 14 Sweet Potato”, it has no skin color (auxiliary color) and is slightly more resistant to black spot. 2 sweet potato, It was cultivated at the Kyushu Agricultural Experiment Station and was named and registered in 1990. It has a neat long spindle shape, the skin color is reddish red, and the flesh color is yellowish white. The taste is delicious, the shape and size are easy to match, and the commercialization rate is high. Suitable for roasted sweet potatoes, etc., and has a better taste than high-grade No. 14. The fact that the flesh color of the potato is light yellow is recognized. Based on the Ministry of Agriculture, Forestry and Fisheries variety registration system, it was applied for registration in 2001 (Kansho Norin No. 55) and was registered in 2005, about four years later. The amount of “maltose” produced by steamed “sweet potato”, which is poorly soluble in alcohol and has a sweet taste, increases with the “β-amylase” activity of tuberous roots. Suppressed.), which is a crossed seedling and selected breeding species, and from 2012, Kaneko Seed Co., Ltd. (Maebashi City, Gunma Prefecture) has started pre-sale. “Silk Sweet potato”, two items were registered under the trademark registration system of the Patent Office in 2011 and 2012, following a registration application. It is characterized by a dark red or reddish purple skin and a cream-colored fruit. The flesh is fluffy and chewy. Lastly, according to the Narita City Agricultural Administration Division, as the number of people engaged in farming is declining, in order to further attract and retain human resources in agriculture, it is necessary to secure income immediately after starting farming, which tends to be unstable, and to develop management. It seems that it also serves as support for the introduction of machines and facilities for the purpose. As a start-up fund, we aim to become a farmer who will lead the next generation, and for new farmers who will become independent and self-employed in 2022, up to 1.5 million yen per year for up to three years from the start of farming until management stabilizes. It seems to be something to deliver yen. (It seems to be limited to those whose household income in the previous year was 6 million yen or less.)
The original variety of sweet potato, “Silk Sweet Sweet Potato,” is very sweet, with a moist texture that does not dry out even after it has been steamed or baked for a long time. The later the harvest, the higher the yield, and the sweeter the potatoes tend to be easier. The skin is easy to peel off immediately after harvesting, so handle it carefully. You can also use flail mowers and diggers for vine cutting and digging. Dig the potatoes after peeling them off. Curing / storage / shipping: When storing for more than 2 months before shipping, curing for 4 days at a temperature of 30°C and a humidity of 90% or more seems to prevent spoilage. As a simple method, sweet potatoes with soil immediately after harvesting are placed in a container, covered with a vinyl sheet and steamed for 4 days (15-40°C) in a sealed greenhouse. Also, after curing, store at 13°C as a guideline. After two weeks to a month of storage, the starch contained in the potatoes turns into sugar, making them sweeter and ready for shipment. Storing at around 10°C accelerates the saccharification of starch, making it easier to rot after about two months of storage, and there is a risk of low temperature damage such as wilting and hollowing of potatoes.
Tsubotairi ruins: Project name: Ken-O Expressway (Daiei-Yokoshiba), Taragai, Narita City, Survey period: December 1-15, 2014, January 14-March 2, 2015. Survey area: 2,101m2. Periods Jomon period, Yayoi period, Kofun period Main relics Jomon pottery, Yayoi pottery, Kofun period Haji pottery. Main results The center of the ruins is located on a plateau at an altitude of about 30m facing a tributary of the Osukagawa River, one of the Tonegawa water systems. It is located on a low terrace formed on the way from the slope of the plateau to the bottom of the valley. No remains of pit dwellings have been found, but a large amount of relics from the early to late Jomon period can be found in the thickly deposited black soil. Excavated relics from the Jomon period Among them, pottery from the early Jomon period was the most excavated, and the Chiamishiki pottery from the end of the Jomon period, which has few similar examples in the prefecture, was unearthed. A model named after an earthenware excavated from the Chiami Gaito ruins in Kiryu City, Gunma Prefecture. This Chiami-style pottery is a type of pottery group called “Fusen-net Jomon-type pottery.” It is characterized by applying a mesh-like pattern with lines. Pottery with similar patterns is widely distributed from the southern Tohoku region to the Kanto, Chubu and Hokuriku regions. Generally thin clay string is pasted on the pottery and traced on both sides with a finger to express the ridged line. An expression that makes the space appear to be raised seems to be characteristic. In the prefecture, it can be seen at the Arami Shell Mound in Narita City, the Mukodai II Site in Shiroi City, and the Ikehana Minami Site on the Yotsukaido Road. However, the amount of excavated pottery was small, and no traces of pit dwellings have been found.
The story of Daidarabocchi heard in Narita was buried by the construction of Narita New Town, but there is a legend about Senbaga Pond in Matsuzaki. This giant straddles Inba Swamp and places his feet in Ryukakuji Temple in Sakae Town and Kinoshita in Inzai City. It seems that this creature washes its face in the water of the swamp, and the water that accumulates when it pees is Senbaga Pond (between Narita Kita High School grounds to the south of Narita Yukawa Station and the residential area to the west?).
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