Nutrient-flow wick culture system for potted plant production: System characteristics and plant growth

• Published in: Scientia horticulturae Vol. 107; no. 4; pp. 392 - 398
• Main Authors: Son, J.E., Oh, M.M., Lu, Y.J., Kim, K.S., Giacomelli, G.A.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 27.02.2006; Elsevier
• Subjects: Agricultural and farming systems; Agronomy. Soil science and plant productions; Algae; Biological and medical sciences; dissolved oxygen; Ebb and flow system; evaporation; flow; Fundamental and applied biological sciences. Psychology; General agroecology. Agricultural and farming systems. Agricultural development. Rural area planning. Landscaping; General agronomy. Plant production; Generalities. Agricultural and farming systems. Agricultural development; Kalanchoe; Kalanchoe blossfeldiana; nutrient solutions; nutrient-flow wick culture; Nutrient-stagnant wick culture; plant cultural practices; plant growth; potted foliage plants; salinity; soilless culture; soilless media; Subirrigation; subsurface irrigation; Water content; Water loss; water uptake; Water loss; Algae; Water content; Subirrigation; DO; Ebb and flow system; Kalanchoe; Nutrient-stagnant wick culture; Plant production; Production system; Horticulture; Growth; Crassulaceae; Nutrient film technique; Succulent plant; Pot growing; Subsurface irrigation; Indoor plant; Dicotyledones; Angiospermae; Spermatophyta; Thallophyta
• ISSN: 0304-4238; 1879-1018
• DOI: 10.1016/j.scienta.2005.11.001

To compliment the current subirrigation systems used for production of potted plants, a nutrient-flow wick culture (NFW) system was developed and compared with other subirrigation systems, such as an ebb and flow culture (EBB) system and a nutrient-stagnant wick culture (NSW) system in relation to their system characteristics and plant growth. Kalanchoe ( Kalanchoe blossfeldiana cv. New Alter) was cultivated in a 6 cm pot for 10 weeks in each subirrigation system. The water-absorption pattern of the medium, water content of the medium, water loss, algal growth, salt-buildup and plant growth under various culture systems were observed. The water contents of medium under the NFW and EBB systems showed fluctuations from 30 to 40% and from 50 to 60% (by volume), respectively, whereas the water content under the NSW system gradually increased to over 40% without fluctuation. Relative to other systems, the water loss in the NFW system was 50–70% due to the reduction in the evaporation from the surfaces of the trough and medium. Algae appeared in the NSW system because the nutrient solution was always stagnant in the trough, while it was not observed under the NFW system. The dissolved oxygen in the nutrient solution was the highest during the irrigation period and the salinity in the medium was the lowest in the NFW system. With regard to system characteristics, the NFW system was simple, water-saving and efficient. In addition, the growth of kalanchoes in the NFW system was similar to those in the NSW and EBB systems at an irrigation frequency of five times a day.