Existing Theories & Factors That Affects
Irrigation Systems Humidity, Moisture & Climate Change
Automated Irrigation System
Microcontroller Using Soil Moisture and
Soil Moisture Sensor Humidity Sensor
Humidity Sensor Development Tools
REVIEW OF RELATED STUDIES
This chapter aims to site some studies and theories that the researchers hold and come up with this project. The researchers includes the factors that affects plants deterioration, development tools and design that the researchers will be using in this study lastly the existing irrigation systems that the researchers consider to innovate.
This subtitle discusses the theories that the researchers will be supporting which is directly relevant to the research.
2.1.1 Theory of Relative Humidity
Relative humidity is the relationship between the actual water vapor pressure and the maximum possible water vapor pressure. As stated by PAGASA (Philippine Atmospheric, Geophysical and Astronomical Services Administration) “Due to high temperature and the surrounding bodies of water, the Philippines have a high relative humidity. The average monthly relative humidity varies between 71 percent in March and 85 percent in September”. Relative humidity contributes the cooling and dryness of the soil and if relative humidity exceeds on its normal range it affects the soil thus affecting the growth of plants.
2.1.2 Theory of Soil Moisture
Soil moisture conditions enhance the following related variables: net surface radiation, total heat flux from the surface into the atmosphere, and moist static energy in the atmospheric boundary layer. ( Soil Moisture Theory Elfatih A. B. Eltahir).
2.1.3 Theory of Irrigation