Soil pH is a measure of the acidity and alkalinity in soils. Furthermore, it represents an important water and energy storage component of the regional climate system. By controlling evapotranspiration, soil moisture impacts the partitioning of incoming radiation into sensible and latent heat flux. Soil moisture is a key variable in the climate system. Proper water management is possible through the use of this sensor technology. Use of correct Soil moisture sensors helps to ease out the pain which can monitors and keep records about the changes in soil moisture starting form cultivation to harvesting period of crops. It is important to know when to water and how much to water constantly for the better production of corps. Water plays an active role in the development of the crops. Now, better production of crop is essential to fulfill the demand. With increasing number of population but limited land resource, the demand for food is constantly increasing. The sensors which are used to measures the water content of soil are called Soil moisture sensors. Some of these systems provide continous data collection. Soil moisture can be measured or monitored more effectively and accurately using a variety of commercially available soil moisture monitoring systems. This could save water, use less energy, reduce pumping cost, increase yields, and help protect the environment from excess irrigation. Soil moisture is one way of determining when crops need irrigation and how much irrigation water to apply.

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