Development Of Aeroponics Lettuce Root Zone Cooling System Based On Internet Of Things And Aeroponics Experiments

Currently,in the conventional aeroponic system the collection of data for crop performance is quite slow,where such data is typically collected manually.Correspondingly,the root zone temperature is one of the most important factors affecting plant growth in an aeroponics cultivation.Therefore,our study aims to obtain temperature and relative humidity data inside aeroponic system based on the Internet of things(Io T)and automatically cooling the root zone using a novel low-cost effective technique for cooling via a cooling fan connected to the Arduino board.The results revealed that the newly designed system could monitor and record the data in real-time on an internet server per hour.However,displayed it on the smartphone application,and sends the temperature and humidity data to the personal email weekly as an excel sheet.This system was able to maintain the temperatures inside the roots chamber between28.7-29.2 ℃ while the maximum external temperature was 38.1 ℃,and the average temperature in the traditional aeroponics system was fluctuating between 29.5-31.5 ℃.Our newly automated cooled root zone system showed an optimization of lettuce growth characteristics.It significantly increased the lettuce absorbance of inorganic nutrients such as N,P,K by 45.5,66.6,45%,respectively.Also revealed an increment of fresh weight,total chlorophyll,ascorbic acid,total carbohydrate,and total amino acids by 131,26.2,41.9,30.7,6.2%,respectively in comparison with the conventional aeroponic system.In addition,had a significant increment in antioxidant assays(DPPH,and FRAP assays)Therefore,our study may play a significant role in the aeroponic monitoring and control,for providing more suitable growth parameters and achieve least human interaction.