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Effect of Different Nutrition Solution Concentrations on Growth of Lettuce Under LED Light Condition
Author(s): 
Pages: 67-70
Year: Issue:  18
Journal: Northern Horticulture

Keyword:  light emitting diode(LED)nutrition solution concentrationlettucegrowth;
Abstract: Taking butter head lettuce as experimental material,effect of different nutrition solution(0.8mS/cm,1.0mS/cm,1.2mS/cm,1.4mS/cm,1.6mS/cm,1.8mS/cm)Yamazaki formula on growth of lettuce were studied under the LED light conditions.The results showed that plants had maximal fresh and dry weight of shoots and roots,leaf length and the number of leaves under 1.0mS/cm and 1.2mS/cm concentration treatments;while those were the lowest under 1.8mS/cm.It indicated that nitrate accumulation of lettuce increased with increasing of nutrient solution concentration.Based on the comprehensive analysis,EC value in 1.0-1.2 mS/cm was the optimal concentration for hydroponic lettuce.
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