Early autumn variety obtained at the Scientific Research Institute of Horticulture of Siberia named after M. A. Lisavenko from pollination of the 'Tema' variety by 'Lyubimitsa Klappa'. Breeders: I. A. Puchkin, I. P. Kalinina, E. P. Karataeva, M. I. Borisenko. Approved for the West Siberian region.
Medium-sized tree with a round, rather dense crown.
Shoots are thin, straight, yellow-brown. Leaves are medium-sized, round, green, smooth, on thin long petioles. Predominant type of fruiting structures — simple and compound rings. Characteristic feature of fruiting — abundance of fruits on some branches and complete absence on neighboring ones.
Fruits are below average size (mass 88 g), pear-shaped, slightly tapered, strongly warty, with a sharp taper to the apex. Skin is not rough, oily, shiny. Main color is golden-yellow, covering — bright red blush occupying up to one-third of the fruit surface. Subcutaneous dots are few, small, green, barely noticeable. Peduncle is long, curved, oblique. Pit is not pronounced. Calyx is non-dehiscent, half-open. Subcalyx tube is weakly expressed. Dish is wide, ridged. Heart is medium-sized, onion-shaped. Seed chambers are closed. Seeds are egg-shaped, brown.
Flesh is white, firm, juicy, medium-textured, slightly acidic-sweet, quite good taste. Chemical composition of fruits: total sugar — 11.5%, titratable acids — 0.32%, tannins — 104 mg/100g, ascorbic acid — 11.0 mg/100g, P-active substances — 120 mg/100g.
Fruits ripen in mid-September and can be stored for up to two weeks, in a refrigerator — up to two months. Suitable for fresh consumption and production of high-quality compotes.
Begins fruiting on the 4th-5th year. Yield is moderate, regular.
Cold resistance of Kupava is satisfactory, slightly lower than older Siberian lukašovka varieties. Highly resistant to fungal diseases.
Advantages of the variety: good commercial and consumer qualities of fruits, high resistance to fungal diseases.
Disadvantages of the variety: insufficiently high cold resistance, susceptibility to damage by the pear fruit moth.
