Ishikura is an excellent variety with rapid growth. Very good flavor. 
It can be used for various culinary uses.
Plant
A vigorous and exuberant root system
Long and strong leaves of erect growth, medium to intense green color
It has a good combination between the qualities of the bulb and the leaves. 
The bulb and leaves are not spicy.
Straight, white bulb.
Precocity
Earlier
Tolerance
Good performance against fungal diseases
Good heat tolerance