RANCANG BANGUN SISTEM KONTROL OTOMATIS SENSOR KELEMBABAN TANAH PADA MEDIA TANAM POLYBAG

Abstract

Abstact
Soil Moisture is the amount of water stored between the pores of the soil. Soil
moisture conditions are very dynamic, this is caused by absorption through the soil
surface of transpiration and percolation. Knowing the differences in surface soil
moisture can help optimize soil management in a field, so that productivity can be
maintained. Water obtained by the soil consists of two ways, namely naturally from
rainwater and artificial processes such as irrigation. One of the factors that affect
soil moisture is watering. Watering is something that cannot be released in
maintaining soil moisture. One effort that can be done is to provide irrigation water,
namely by using an automatic system based on a microcontroller using sensors to do
watering according to water needs without having to use human power/operators.
This research was conducted at the Greenhouse of the Faculty of Agriculture,
University of Sam Ratulangi for one day. Data collection was carried out at intervals
of two hours with three treatments namely A 70% humidity standard, B 80% humidity
standard, C 90% humidity standard indicating that the irrigation system using the
Arduino Uno microcontroller can detect changes/decreases in soil moisture in the
experimental polybags, and can respond and command watering activities to restore
relative humidity conditions.
Keyword : soil moisture, humidity, automatic control