Summer Butte Plum is a large ball with pale purple skin and pale yellow flesh. The fruit is juicy and juicy, and the flesh is crunchy. It has a strong sweetness and moderate acidity, and is highly trusted by consumers. In 1991, at the Yamanashi Prefectural Fruit Tree Experiment Station, Soldum plum and Black Butte plum were crossbred, and it seems to have been selected and bred from among them. The breed was registered in 2005. Currently, it is considered an original variety of Yamanashi Prefecture, and Yamanashi Prefecture has the highest production rate, accounting for about 90% of the total production rate.
In the Enzan area of Koshu City, located in the northeastern part of Yamanashi, Yamanashi Prefecture is by far the largest producer of plums in Japan. It seems that all the fruits grown in this area are delicious and have a strong flavor right down to the center of the fruit. Plums are also one of the representative fruits suitable for the land of Enzan. Also within 100 km from Tokyo. It is the best fruit village in Japan near the metropolitan area. In the Kyoto region, the Maglev Chuo Shinkansen is scheduled to open in 2027. It takes only 25 minutes between Tokyo and Kofu, and within 30 minutes by car from the Maglev Station, you can enjoy your life while enjoying the beautiful nature and agricultural scenery. It seems that you can practice a life that emphasizes fun and work-life balance.
According to the Yamanashi Orchard Research Institute, Breeding Department, Deciduous Fruit Tree Breeding Department, in Yamanashi Prefecture, it is desired to develop new varieties of plums that are large balls and have excellent taste and cultivability. Therefore, we aim to develop high-quality varieties that are suitable for this prefecture and have excellent cultivability. As for the contents and characteristics of the results, we applied for the registration of the cultivar of “Summer Butte Plum” and “Summer Angel Plum” in November 2001. It is in the middle of “plum” and has strong tree vigor. Many flower buds are formed, and the flowering period is about 10 days earlier than “Soldum plum”. In addition, there is little physiological fruit drop and tear. The harvest season is in late July, four days earlier than Soldam Sumomo. The average fruit weight is 170 g, which is a large ball. It has a high sugar content of 18% on average and a slightly sour taste, giving it a rich taste. The flesh color is pale yellow, and the flesh is dense. Based on the change in fruit hardness after harvesting, the shelf life is comparable to that of “Soldum Plum”. Characteristics of “Summer Angel Sumomo” As a result, the tree shape is between “Wase oishi Plum” and “Soldum Plum”, and the tree is strong. It has many flower buds and blooms at about the same time as ‘Soldum Plum’. In addition, the ball alignment is good, and there are few physiological fruit falling and tearing. The harvest season is late July, which is about the same time as “Soldum Sumomo”. The fruit weighs an average of 150 g and is large, round in shape, and bright red in color. The sugar content is high at an average of 16%, and it has a sour taste and a lot of juice, so it has a good taste. The flesh is light yellow in color and medium in quality. It has a high mating affinity with ‘Hollywood Plum’ and is a productive. From the change in fruit hardness after harvesting, it seems that the shelf life is about the same as “Soldum plum”.