Abstract
The production of potatoes from true seed was studied in direct-sown seed beds during both winter and summer seasons in Lima, Peru. After emergence, seedlings were thinned to give 6, 12, 24, 48 or 96 plants per m2. In all five density treatments plants were arranged in a square configuration. In both seasons, increasing plant density significantly increased total tuber number as well as tuber weights in the grades 1–5 g, 5–20 g and 20–40 g. The yield of tubers larger than 40 g was similar in all densities. In the warm summer season, tuber number was significantly reduced and mean tuber weight was 56% greater compared with that in the winter season. The potential of producing consumer potatoes from true seed in seed beds in warm climates is discussed.
Resumen
Se estudió la producción de papas a partir de semilla botánica sembrada directamente en camas tanto en la estación de invierno como en la de verano, en Lima, Perú. Después de la emergencia, las plántulas fueron raleadas para obtener 6, 12, 24, 48, y 96 plantas por m2. En todos los tratamientos las plantas estaban distribuídas formando cuadrados. En ambas estaciones, el incremento en la densidad de las pantas incrementó significativamente el número total de tubérculos al igual que el peso de los tubérculos en los tamaños de 1–5 g, 5–20 g, y 20–40 g. El rendimiento de los tubérculos mayores de 40 g fue similar en todas las densidades. En la estación cálida del verano, el número de tubérculos fue reducido significativamente y el peso promedio de los mismos fue 56% mayor en comparación con el obtenido en la estación de invierno. Se discute el potencial de la producción de papas para consumo a partir de semilla botánica sembrada directamente en camas en climas cálidos.
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Literature Cited
Accatino, P. and P. Malagamba. 1982. Potato production from true seed. Bulletin, International Potato Center, Apartado 5969, Lima, Peru, 20 pp.
Bodlaender, K.B.A. 1963. Influence of temperature, radiation, and photoperiod on development and yield.In: The growth of the potato. Proceedings of the Tenth Easter School in Agricultural Science, University of Nottingham, (ed.) J.D. Ivins and F.L. Milthorpe. pp 199–210.
Engels, C., S. Sadik and R.A. El-Bedewy. 1985. True Potato Seed (TPS) research in Egypt.In: Innovative Methods for Propagating Potatoes; Report of the Planning Conference. International Potato Center, Lima, Peru, pp 237–251.
Fedalto, A.A., A. Mizubuti, V.W.D. Casali and R.F. Silva. 1984. Evaluation of plant densities with potato seedlings derived from true potato seeds. Horticultura Brasileira 2(2):15–21.
Harris, P.M. 1983. The potential for producing root and tuber crops from seed.In: Proceedings Sixth Symposium of the International Society for Tropical Root Crops, held in February, 1983, in Lima, Peru. pp 67–80.
Haverkort, A.J. and A. Devaux. 1985. Experimental and Farmers’ Use of Botanical Seed and Seed Tubers in Rwanda: Production increase.In: Innovative Methods for Propagating Potatoes; Report of the Planning Conference. International Potato Center, Lima, Peru, pp 195–203.
Marinus, J. and K.B.A. Bodlaender. 1975. Response of some potato varieties to temperature. Potato Res 18:189–204.
Martin, M.W. 1983. Techniques for successful field seeding of true potato seed. Am Potato J 60:245–259.
Mok, G. 1985. TPS research in Korea:In: Innovative Methods for Propagating Potatoes; Report of the Planning Conference. International Potato Center, Lima, Peru. pp 225–236.
Ninez, V. 1985. Introduction: household gardens and small-scale food production. Food and Nutrition Bulletin 7(3): 1–5.
Poats, S.V. 1983. Beyond the farmer: Potato consumption in the Tropics:In: Proceedings International Congress “Research for the Potato in the Year 2000”, (ed.) W.J. Hooker, International Potato Center, Lima, Peru, pp 10–17.
Rhoades, R.E. 1985. Traditional potato production and farmers’ selection of varieties in eastern Nepal. Potatoes in food systems research series, Report No. 2. International Potato Center, Lima, Peru, 52 pp.
Sadik, S. 1983. Potato production from true seed — Present and Future.In: Proceedings International Congress “Research for the Potato in the Year 2000”, (ed.) W.J. Hooker, International Potato Center, Lima, Peru, pp. 18–25.
Shakya, J.D. 1985. The production of potatoes from true potato seed by transplanting or field sowing. Ph.D. Thesis, University of Reading, England. 289 pp.
Sikka, L.C., A.E. Hussain and K.U. Ahmad. 1985. Field experiments with TPS in Bangladesh:In: Innovative Methods for Propagating Potatoes; Report of the Planning Conference. International Potato Center, Lima, Peru, pp 195–203.
Song, B.F. 1984. Use of true potato seed in China. Circular, International Potato Center 12(2):6–7.
Wiersema, S.G. 1984. The production and utilization of seed tubers derived from true potato seed. Ph.D. Thesis, University of Reading, England, 229 pp.
Wiersema, S.G. 1985. Production and utilization of seed tubers derived from true potato seed.In: Innovative Methods for Propagating Potatoes; Report of the Planning Conference. International Potato Center, Lima, Peru. pp 95–116.
Wiersema, S.G. and R.C. Cabello. 1985. Production of seed tubers derived from true potato seed. Am Potato J 62:449–450 (Abstr.)
Wiersema, S.G. and R.H. Booth. 1985. Influence of growing and storage conditions on the subsequent performance of seed potatoes under short-day conditions. Potato Res 28:15–25.
Wiersema, S.G. 1986. A method of producing seed tubers from true potato seed. Potato Res 29:225–237.
Wiersema, S.G. and R. Cabello. 1986. Comparative performance of different-sized seed tubers derived from true potato seed. Am Potato J 63:241–249.
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Wiersema, S.G. The effect of density on tuber yield in plants grown from true potato seed in seed beds during two contrasting seasons. American Potato Journal 63, 465–472 (1986). https://doi.org/10.1007/BF02852941
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DOI: https://doi.org/10.1007/BF02852941