Influence of Atomization Nozzles and Spraying Intervals on Growth, Biomass Yield, and Nutrient Uptake of Butter-Head Lettuce under Aeroponics System

The atomized nutrient solution droplet sizes and spraying intervals can impact the chemical properties of solution, biomass yield, root-to-shoot ratio uptake aeroponically cultivated plants. In this study, four different nozzles having N1 = 11.24, N2 26.35, N3 17.38 N4 4.89 µm were selected misted at three 30, 45 60 min, with a 5 min time. measured parameters power hydrogen (pH) electrical conductivity (EC) values shoot root growth, roots to shoots (fresh dry), yield uptake. results indicated that presented significantly lower changes in than those N2, N4, resulting stable lateral growth increased yield. Also, increasing interval using nozzles. nozzle also revealed significant effect on phosphorous, potassium magnesium by plants proposed intervals. However, ultrasonic showed nonsignificant all respect last, research experiment validates applicability air-assisted (N1) misting 30-min time for cultivation butter-head lettuce aeroponic systems.