Influence of Atomization Nozzles and Spraying Intervals on Growth, Biomass Yield, and Nutrient Uptake of Butter-Head Lettuce under Aeroponics System
| Autor: | Sher Ali Shaikh, Waqar Ahmed Qureshi, Jiedong Chen, Imran Ali Lakhiar, Mazhar Hussian Tunio, Jianmin Gao, Kashif Ali Solangi |
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| Rok vydání: | 2021 |
| Předmět: |
Aeroponics
aeroponics Magnesium Potassium Nozzle Lateral root lcsh:S food and beverages chemistry.chemical_element food security nutrients management Ultrasonic nozzle lcsh:Agriculture Horticulture climate change Nutrient soilless cultivation chemistry Shoot air-assisted atomizer Agronomy and Crop Science root characteristics |
| Zdroj: | Agronomy, Vol 11, Iss 97, p 97 (2021) Agronomy Volume 11 Issue 1 |
| ISSN: | 2073-4395 |
| DOI: | 10.3390/agronomy11010097 |
| Popis: | The atomized nutrient solution droplet sizes and spraying intervals can impact the chemical properties of the nutrient solution, biomass yield, root-to-shoot ratio and nutrient uptake of aeroponically cultivated plants. In this study, four different nozzles having droplet sizes N1 = 11.24, N2 = 26.35, N3 = 17.38 and N4 = 4.89 µ m were selected and misted at three nutrient solution spraying intervals of 30, 45 and 60 min, with a 5 min spraying time. The measured parameters were power of hydrogen (pH) and electrical conductivity (EC) values of the nutrient solution, shoot and root growth, ratio of roots to shoots (fresh and dry), biomass yield and nutrient uptake. The results indicated that the N1 presented significantly lower changes in chemical properties than those of N2, N3 and N4, resulting in stable lateral root growth and increased biomass yield. Also, the root-to-shoot ratio significantly increased with increasing spraying interval using N1 and N4 nozzles. The N1 nozzle also revealed a significant effect on the phosphorous, potassium and magnesium uptake by the plants misted at proposed nutrient solution spraying intervals. However, the ultrasonic nozzle showed a nonsignificant effect on all measured parameters with respect to spraying intervals. In the last, this research experiment validates the applicability of air-assisted nozzle (N1) misting at a 30-min spraying interval and 5 min of spraying time for the cultivation of butter-head lettuce in aeroponic systems. |
| Databáze: | OpenAIRE |
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