How is the Ning Potato No. 5 potato variety?

Breeding unit: Guyuan Regional Institute of Agricultural Sciences, Ningxia Hui Autonomous Region.

Approval status: approved in 1994 by the Crop Variety Approval Committee of Ningxia Hui Autonomous Region, and in 1997 by the National Crop Variety Approval Committee.

Variety registration number: GS05003-l997.

Variety source: seedling from the selfed progeny of 76-2-15.

Characteristics: plant height about 50 cm, upright plant type, 3-4 branches, green leaves, white flowers, concentrated tuber set, 4-6 tubers per plant, round tubers, yellow skin and white flesh, shallow eyes, tuber dry matter content 23.5%, starch content 15.1%, protein content 3.2%, reducing sugar content 1.3%, good tuber quality, good palatability, short dormancy period, prone to sprouting in cellar storage. Growth period about 120 days, a mid-season variety. Resistant to late blight in the field, resistant to mosaic and leafroll virus diseases, tolerant to fertilizer and water, generally yielding 2000-2500 kg of fresh tubers per mu.

Cultivation points: in semi-arid areas, maintain about 3500 plants per mu; in wet and shaded land, maintain 4000 plants per mu. Prepare the land carefully, increase fertilizer application, apply 4000 kg of farmyard manure per mu, 10 kg of diammonium phosphate per mu, and topdress 5 kg of urea at the bud stage.

Suitable range: the semi-arid and wet-shaded areas of southern Ningxia, and suitable areas in Gansu and Qinghai provinces.