There are various theories about the origin of the long onion, and it is said to be around the western part of China, but no native species has been found. There is a record in China from 2200 to 2300 years ago, and it is said that cultivation began around the 4th century. It was introduced to Japan by around the 8th century. It is said that green onions originated in southern China, and green onions in northern China, but it is unknown how they were introduced to Japan.
Early Summer Ichimonji Long Onion(初夏一文字): From Takii seedlings, it has a beautiful appearance with small leaves and erectness, and the grass shape is small and erect, so management work such as soiling is easy. The leaves are dark green and the soft white part is glossy. Tightness of the neck spring green onions, which starts to move quickly in early spring, seems to have a tendency to split the neck in the latter half of growth, causing disease and reducing the weight of one. By adding black-stalked blood to this species, the neck is tight, and it does not come apart easily, and has a good yield. It seems that the rate of excellent products is high and the occurrence of waste is low because of the high uniformity and fatness.
Because it has excellent fertilizing power, there is a risk of splitting if a large amount of additional fertilizer is applied at once. Apply additional fertilizer in small amounts. Appropriate sowing/appropriate harvest Normal long onions differentiate into flower buds under low temperatures in winter, and begin flowering in early spring. Even if this species is late-blooming, there is a risk of stalk blooming if sown in September. Sow seeds after the beginning of October to prevent too early winding and excessive early sowing. In spring, it seems to be good to harvest before the moss is bolted. Excessive fertilization during the high temperature period is strictly prohibited. The optimum temperature for growth of long green onion is around 20℃, and if it exceeds 30℃, growth slows down. If the fertilization effect increases at that time, soft rot will be promoted, so it seems to be good to take advantage of the high fertilization capacity of this species and keep in mind to add a little amount of additional fertilizer frequently. As a countermeasure against the disease, Puccinia allii (a disease that occurs mainly on leaves, a characteristic disease in which small orange-yellow spots appear on infected leaves. It can be easily found visually. The center of the spot-type lesion is dark orange, and the surrounding area is yellowish white), and Peronospora destructor (in the case of overwintering long onions, the whole body is infected without causing lesions. Infected plants stop growing, are short in height, and have leaves It is characterized by an increase in thickness and a change in color from white to yellow.When part of the leaf turns yellow, it bends from that part.After that, when the temperature rises, mold develops on the surface of the leaf, It turns yellow and dies.), implement preventive spraying to suppress it before it explodes.