After that the response will return to the sensorand the tool installed in the land will work automatically. For example, when the water level is inadequate, the sensor will beON and automatically send the notification to the android through applicationso the users will respond. In the application the users can see the moisture level in theland through sensor reading and rechecking by giving a certainresponse. An adequate amount of water is an important factor ofthe plants’ growth since water affects the moisture of the soil. Unfortunately, the smartphones inIndonesia are used only for less useful things, such as playing online games oraccessing forbidden sites.In theagricultural field, the plants’s growth is influenced by not only the weather,but also by the nutrient content of the soil, fertilization process, andadequate water supply. Indonesia is a country with the fourth largest smartphone users inthe world after China, India, and America. Unfortunately, however, theyare unable to utilize the technological advancement maximally.Asmartphone is a smart telephone equipped with various sophisticated features toaccess the internet, play online games, check emails, edit and write adocument. The development of technology accompanied with the emergence ofvarious sophisticated communication tools, for example a smartphone, causes achange in the life style of the Indonesian people. However, it is shown in the study conducted by Bank of Indonesia in 2007that 40% of the poor in Indonesia are, in fact, dominated by thosewho work in the sectors of agriculture, plantation, and fishery.One of the causes of the problem istechnology.

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