Miho Wase

Miho Wase is a high-yielding Japanese mandarin variety, resulting from a complex breeding process: ((Citrus unshiu x C. sinensis) x C. unshiu). The crop belongs to the Rutaceae family. This variety represents a group of early-maturing Unshiu-type mandarins, highly valued for their ability to produce quality crops in temperate subtropical climates.

The origin of the variety is linked to Japanese breeding programs aimed at improving sugar content and early fruit ripening. The main cultivation area includes regions with mild winters, such as southern Japan, the Mediterranean coast, and the subtropical zones of the Caucasus. The crop demonstrates notable resilience to lower temperatures compared to other citrus species.

Botanically, Miho Wase is a medium-sized tree with a spreading canopy. The leaves are leathery and dark green, while the fruits exhibit a round or slightly flattened shape with a bright orange, thin rind. The flesh is characterized by juiciness, high sugar concentration, and an almost total absence of seeds, which is a significant commercial feature.

Successful cultivation requires well-drained, fertile loamy soils with a neutral to slightly acidic pH. Agronomic practices include regular irrigation during the active growing season, application of balanced mineral fertilizers, and routine pruning to shape the canopy and stimulate fruit production. It is essential to avoid soil waterlogging, which can lead to root rot.

The commercial use of the variety is focused on the production of fresh fruit for both domestic and export markets. Major threats to the plant include:

• scale insects and mealybugs on leaves;
• spider mites in low-humidity conditions;
• fungal diseases such as anthracnose;
• root rot caused by improper irrigation;
• citrus aphids attacking young shoots.