True potato seed research and development in Vietnam |
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Authors: | Vu Tuyen Hoang Pham Xuan Liem Vu Bich Dan Ngo Doan Dam Nguyen Xuan Linh Nguyen Van Viet Pham Xuan Tung Peter Vander Zaag |
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Institution: | 1. Food Crops Research Institute (FCRI), Vietnam 2. International Potato Center (CIP), Box 933, Manila, Philippines
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Abstract: | Quality tuber planting material is unavailable in the Red River Delta (RRD). The use of True Potato Seed (TPS) was considered as an alternative planting material. During the 1985–86 and 1986–87 seasons, 21 and 40 kilos of open pollinated TPS, respectively, were collected in the southern highlands and distributed to over 40 cooperative groups of farmers in the RRD. Fifty-two hectares (1985-86) and 120 hectares (1986-87) of potatoes were produced from transplants in the two years of on-farm production. Approximately 50% of the farmers were successful in both years. Lack of experience and too wet or too dry growing conditions caused most of the failures. Yields from transplants ranged from 5 to 13 t/ha with 150 to 300 seedling tubers/m2. Seedling tubers can be stored for eight months with low storage losses and when replanted give substantially higher yields than those obtained from locally grown, degenerated seed tubers. |
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