Field Study Correlating Nutrient Absorption and Transpiration in Lettuce Hydroponics Using an IoT-Interfaced Solid-State Ion Sensor Array
學年 112
學期 2
出版（發表）日期 2024-05-17
作品名稱 Field Study Correlating Nutrient Absorption and Transpiration in Lettuce Hydroponics Using an IoT-Interfaced Solid-State Ion Sensor Array
作品名稱（其他語言）
著者 Peng, Jui-yu; Kao, Zhi-wei; Lin, Chi-yi
單位
出版者
著錄名稱、卷期、頁數 IEEE Sensors Letters 8(6)
摘要 The letter uses Internet-of-Things (IoT)-interfaced miniaturized ion sensors to monitor element-specific nutrient information during hydroponic cultivation in a greenhouse. The sensor provides insights into crop nutrient absorption efficiency and alterations in specific ion concentrations in response to vapor pressure deficit (VPD) fluctuations. Solid-contact ion-selective electrodes were fabricated into an ion sensor array and interfaced with wireless embedded systems to construct an IoT nutrient sensor system (IoNSS). The IoNSS framework included two different microcontrollers for nutrient solution sampling, sensing module controlling, automated procedure setting, and data recording: a private cloud server for data management and MQTT webpage-based interactive interfaces. The IoNSS enables real-time assessment of changes in electrical conductivity values and specific element concentrations ( NO3− , NH4+ , Ca 2+ , and K + ,) in nutrient solutions within a commercial hydroponic greenhouse. It also facilitates the determination of the NO3− / NH4+ ratio, aiding in tracking nitrogen fertilization absorbed by plants. Decreases in K + concentration measured by the IoNSS correlate with deviations from normal VPD levels, indicating leaf transpiration efficiency. Measurement of other ions reflects physiological disorders resulting from abnormal VPD. In summary, the IoNSS provides specific-element information crucial for adjusting environmental parameters and optimizing greenhouse environmental control strategies, thus advancing precision agriculture in hydroponic cultivation.
關鍵字 Ions;Hydroponics;Monitoring;Crops;Sensors;Nitrogen;Absorption
語言 en_US
ISSN 2475-1472
期刊性質 國外
收錄於 EI ESCI
產學合作
通訊作者
審稿制度 是
國別 USA
公開徵稿
出版型式 ,電子版
SDGS 消除飢餓,優質教育,產業創新與基礎設施,負責任的消費與生產