Red onion growth monitoring system in hydroponics environment

Abstract

Red onion plants using hydroponic method is a method performed by cultivating plants using water, nutrients, and oxygen with no soil required. Hydroponics method is an alternative solution to grow onions in limited soil. The changes in air temperature, bright light, plant temperature and humidity greatly affect hydroponic growth. Red onion plants using hydroponic planting medium is a method performed by cultivating plants using water, nutrients, and oxygen with no soil required. Hydroponics method is an alternative solution to grow onions in the limited land. The changes in air temperature, bright light, plant temperature and humidity greatly affect hydroponic growth. The difficulty of knowing the environmental conditions of hydroponic planting media, often makes the hydroponic farmers fail in the middle of the process of plant growth. This monitoring system uses water temperature sensor, air temperature sensor, Light Sensor, GSM SIM800L, LM2596Relay module and Arduino Uno as a microcontroller. The result of tests conducted for eight weeks on the onion environment monitoring by taking into account the water temperature, humidity, air temperature, and light intensity. The leaves amount and height acquired from the test is 12 leaves with 29 cm of height.