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KMID : 0903619980390040464
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Journal of the Korean Society for Horticultural Science
1998 Volume.39 No. 4 p.464 ~ p.468
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Effects of Irrigation Method and Frequency , and Nutrient Solution on Rooting , Growth , and Nutrient Uptake of Chrysanthemum Cuttings
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Abstract
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In order to investigate the optimum irrigation method for chrysanthemum propagation, cuttings of Dendranthema grandiflorum (Ramat.) Kitamura cv. Shuhouno-chikara (called as ´Subangryeock´ in Korea) were irrigated with tap water or nutrient solution by overhead or sub-irrigation once or twice a day. Application of nutrient solution increased shoot length, number of leaves and roots, dry weight, and mineral content of rooted cuttings and irrigation twice a day increased root length, dry weight, and N content. Subirrigation promoted Ca uptake, inhibited white rust, and reduced expense for nutrient solution and risk of environmental pollution through the reuse of drained nutrient solution. Interactive effects between irrigation method and frequency were shown in number of roots and white rust lesion, shoot dry weight, and total carbohydrate content, and those between nutrient solution and irrigation frequency were in content of P, K, and Ca. Therefore, subirrigation with nutrient solution twice a day was the most effective irrigation method on raising cuttings of chrysanthemum in this experiment. Nutrient solution was effective on cutting growth during root hardening phase, and proper irrigation frequency provided water and nutrients sufficient to the demand of cutting to its roots. Subirrigation maintained proper leaf temperature and wetness as compared with overhead irrigation, resulting in minimizing reduction in photosynthesis and growth, and reducing disease susceptibility.
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