Effect of concentration of nutrient solution on sunflower growth in hydroponic system
2011
Kongsamai, B. | Kaewsomboon, N., Kasetsart Univ., Kamphaeng Saen Campus, Nakhom Pathom 73140 (Thailand). Dept. of Agronomy | Simantara, P., Kasetsart Univ., Kamphaeng Saen Campus, Nakhom Pathom 73140 (Thailand). Dept. of Farm Mechanics
The effect of nutrient concentration on sunflower grown using hydroponic system under greenhouse conditions was investigated. Plug transplants of three hybrid sunflower varieties, Opera, Pacific 77 and Artuel, were grown in 40 L-rectangular plastic tray container supplied with 10L of 'Enshi' nutrient solution. Three concentrations, 0.25X, 0.5X and 1X of the full strenth Enshi solution were evaluated weekly for 4 weeks in term of dry weight of leaf, stem and root, number of leaf, leaf area per plant, plant height, root length, stem diameter, chlorophyll content using SPAD-502 meter and NPK content in plant. The experiment was conducted using split-plot (main plots were concentrations and subplots were varieties) in RCB [randomized complete block design] with 4 replications. The result indicated that the effect of the concentration of Enshi solution on dry weight of leaf, stem and root, number of leaf, leaf area per tree, SPAD value and nutrient accumulation of nitrogen and phosphorus in leaf and stem were greatest at 1X of the full strength solution. In conclusion, the full strength of Enshi solution is the optimal nutrient concentration for culturing sunflower seeding in hydroponic system under greenhouse condition.
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