Advancments in technologies can help solve many problems. Internet of Things (IoT), a recent technology, can be employed to tackle the problems with irrigation systems in Iraq that suffer from agricultural pests. Such pests are known as emergence of bushes and weeds, such as (Eichhornia and Ceratophyllum), that spread in waterways, stream and river back, estuaries, irrigation channels, gates, and systems.They basically impedethe flow of water and affect the fucntion of pumps, gates and sprinklers, and can evencause them to stop working. Agricultural pests, in addition, consume huge amounts of water that Iraq critically needs, especially in the years of drought and lack of rain.The present study shows the deisgn of a system, for monitoring and controlling the agricultural pests, that uses IoT Wi-Fi Photon board with a GUI (Graphical User Interface) which is supported with an early notification system.The reasons for the growth of these pests and their spread are discussed in this study. Moreover, there are two methods suggested to limit the emergence of the Ceratophyllum plant and detect of the Eichhornia from an early stage. The results showed that the proposed system is feasible.