<![CDATA[Indonesia needs to adopt the agricultural technique that gives high production to fulfill the need of its population. Automatic fertilizing with a drip irrigation system is one of the agricultural technologies to boost yield. Using this fertigation technology involves giving specific nutrients to plants based on their demands to conserve resource inputs. The potential for developing lettuce as an export commodity is highly encouraging. This study was to build an automatic fertigation device that includes a drip irrigation system, environmental management and to decide whether to test the device on green lettuce (Lactuca sativa L.). The research results are anticipated to be adopted and expanded in the community. The research began with designing and preparing instruments and materials; testing each instrument element; construction and programming; system testing tools; and evaluating lettuce plants. This instrument employs sensor components, microcontrollers, and actuators and is based on the IoT (Internet of Things). The results showed that the apparatus could function effectively following the program's specifications. However, the sensor could perform the tool's performance with high accuracy and be tracked by an Android smartphone. Testing the apparatus on lettuce plants showed that the plant tended to improve its height and yield in terms of fresh weight and economic weight compared to the plant watered manually. Moreover, there was less variation in the number of leaves of the plant.]]>
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