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Influence of Water Stress on Growth and Yield in Safflower(Cartamus tinctorius L.)  

Kim, Se-Jong (Research Institute of Natural Product, Kyoungbuk Agriculture Technology Administration)
Park, Jun-Hong (Research Institute of Natural Product, Kyoungbuk Agriculture Technology Administration)
Kim, Jae-Chul (Research Institute of Natural Product, Kyoungbuk Agriculture Technology Administration)
Park, So-Deuk (Research Institute of Natural Product, Kyoungbuk Agriculture Technology Administration)
Song, Kwan-Chul (NIAST, RDA)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.39, no.5, 2006 , pp. 303-306 More about this Journal
Abstract
This experiment was investigated the influence of water stress in growth and yields of safflower. The water stress treatment was early growth stage(Mar. 20~Apr. 18), middle growth stage(Apr. 29~May 28) and last growth stage(Jun. 8~Jul. 7) for 30 days, respectively. Stem length of plant was 127 cm in normal irrigation(control) state and that of growth middle stage at drought state was 96 cm, to be shorted more 31 cm than that of normal irrigation state, also other growth rate of plant was decreased, relatively. Number of effective flower bud per $m^2$ was 224 ea in normal irrigation state, 114 ea in growth middle stage at drought state. Yield of seed at drought state decreased 37% and 13% in growth middle stage(222 kg/10a) and last stage(307 kg/10a) than 353 kg/10a in normal irrigation state. According to the result, it could be estimated that optimum irrigation time(0.05 MPa) was 23days after non-rainfall at early growth stage(from sowing seed time to 30 days after sowing seed), 10 days in middle growth stage(41-70 days after sowing seed) and 9 days in last growth stage(81-110 days after sowing seed), to prevent the damage of drought.
Keywords
Safflower; Water stress; Growth; Yield; Irrigation;
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