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Characterization of Symptom and Determination of Tissue Critical Concentration for Diagnostic Criteria in 'Maehyang' Strawberry as Influenced by Phosphorus Concentrations in the Fertigation Solution  

Choi, Jong-Myung (Department of Horticulture, Chungnam National University)
Jeong, Suck-Kee (Chungchongnam-do Agricultural Research and Extension Services)
Ko, Kwan-Dal (Vegetable Research Division, National Institute of Horticultural & Herbal Science)
Publication Information
Horticultural Science & Technology / v.27, no.1, 2009 , pp. 55-61 More about this Journal
Abstract
Objective of this research was to investigate the effect of phosphorus concentrations in the fertilizer solution on growth and development of nutrient deficiency in 'Maehyang' strawberry (Fragaria ${\times}$ ananassa Duch.). The growth was seriously restricted in P deficient plants. The young leaves were small and dull green in color. Brown areas developed on the margin of mature leaves and enlarged rapidly. The margins of lower leaves became scorched and leaves died prematurely. The growth of 'Maehyang' strawberry was suppressed when P concentration was lower than 0.5 mM or higher than 4 mM at 120 days after transplanting. The response in dry weight and tissue P contents based on dry weight of above ground tissue to the elevated phosphorus concentrations were cubic and quadratic with the equations of y=1.1932+7.205x-2.65x$^{2}$+0.243x$^{3}$ (R$^{2}$=0.6001$^{***}$) and y=0.0598+0.2894x-0.019x$^{2}$ (R$^{2}$=0.9762$^{***}$), respectively. From these equations, the optimal P contents in the above ground tissues are between 0.3 to 0.75%. The trends in fresh weight and P concentrations in petiole sap were cubic and linear, respectively, with the optimal concentration range of 190 to 250 mg.kg$^{-1}$ in petiole sap for commercial production of 'Maehyang' strawberry.
Keywords
Fragaria ${\times}$ ananassa; dry weight; fresh weight; P content in dry matter; P concentration in petiole sap;
Citations & Related Records

Times Cited By Web Of Science : 3  (Related Records In Web of Science)
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