English
Sažetak
Field experiment was conducted at Eastern Tigray, Ethiopia during summer season to determine the effects of flower removal and earthing up time on tuber yield and quality of potato (Solanum tuberosum L.). The experiment comprised of three flower removal stage and five earthing up time treatments, which were laid out in a randomized complete block design (RCBD) of 5x3 factorial arrangement with three replications. Data collected on tuber yield and quality parameters were analyzed using SAS version 9.2. The main and interaction effects of flower removal and earthing up time treatments were significantly affected marketable and unmarketable tuber number and yield, total tuber number and yield, large size tuber in weight and number. The medium and small size tuber in weight and number was also shown significantly affected by main effects but not by their interaction effects. Similarly, dry matter content had significantly (p < 0.05) affected by flower removal alone, but not by earthing up time and its interaction with flower removal. Generally, highest marketable tuber yield ( 30.25 ton ha-1), large size tuber in weight (424.9 g) and number (5) and total tuber yield (30.96 ton ha-1) was recorded from treatment of potato flower removed at bud stage earthed up at 15 days after complete emergence. Therefore, removal of potato flower at bud stage earthed up at 15 days after complete emergence and common cultivation can be practiced for better tuber yield and quality of potato.
Reference
Almekinders, C.J.M. and P.C. Struik, (1996). Shoot development and flowering in potato (Solanum tuberosum L.). Potato Res. 39: 581-607.
Bartholdi,W.L. (1940). Influence of flowering and fruiting upon the vegetative growth and tuber yield in the potato. Minn. Tech. Bull.150.
Bizuayehu Desta and Tekalign Tsegaw. (2008). The Effect of removal of buds and younger leaves on growth, tuber yield and quality of potato (Solanum tuberosum L.) grown under hot tropical lowland. East African Journal of Sciences, Vol 2(2), 124-129.
EARO(2004). Directory of released crop varieties and their recommended cultural practices Addis Ababa, Ethiopia.
FAO (2004). Agricultural data. Provisional 2003 Production and Production Indices
Data. Crop primary. (http:// apps. Fao/default. jsp).
Gebremedihin, W., Endale,G.and Lamesa, B.(2008). Potato Varity development. In Root and tuber crops; untapped resource. EIAR, Addis Abeba , Ethiopia, ed. 15-32.
Lung’aho, C.,B. Lemaga, M. Nyongesa, P. Gildermacher, P. Kinyale, P. Demo and J. Kabira, (2007).Commercial seed potato production in eastern and central Africa. Kenya Agricultural Institute. p.140
Nazari L. (2010). The effect of the removal of inflorescences on four varieties of potato yields in Ardabil, MA thesis in Agriculture. Islamic Azad University of Mianeh, 89.
Hassen Yassin, Ali Mohammed, Desta Fekadu, and Seid Hussen (2013). Effect of Flower Bud Removal on Growth and Yield of Anchote Root (Coccinia abyssinica (Lam.) Cogn.) Accessions at Bishoftu. Advanced Research Journal of Plant and Animal Sciences, Vol. 1(1): 7-13.
Hawkes, J.C. (1990). The potato: Evolution, Biodiversity and Genetic Resources. Belhaven
Press, London. P259.
Horton, Y. (1987). Potato production, marketing, and programs for developing countries. West
view press. London.
Qadir. G., M.Ishtiag and I. Ali.(1999). Effect of earthing up at different stages of growth on yield of different potato cultivars under soil and climate condition of Peshawar (Pakistan). Sarhad J. Agric., 15: 428-425.
Tafi, M., S.A. Siyadat, R. Radjabi and M. Majadam. (2010). The effect of earthing up on the potato yield in Dezful (Khouzestan, Iran) weather condition. Middle East J. Sci. Res.5: 892-898.
Tekalign, T. (2005). Growth and productivity of potato as influenced by cultivar and reproductive growth: I. Stomata conductance, rate of transpiration, net photosynthesis and dry matter production and allocation. Sci. Hortic. 105: 13- 27.
Solomon, Y. (1987). Review of potato Research program in Ethiopia. In: Godfrey-Sam, A. and
Bereke-Tsehay, T. (eds), Proceeding of First Ethiopia Horticultural crops workshop. IAR,
Addis Ababa.