This paper focuses on devising an efficient, economical and automated solution for irrigation through a Mobile Irrigation Care Unit (MICU). MICU is equipped with wireless sensor network based smart field monitoring system mounted on a solar powered vehicle. Fields requiring water management and pest control can be monitored by MICU that essentially carries pesticide module and water tank meticulously managed through a powerful feedback and control mechanism. Our contribution towards irrigation engineering is to design a system that efficiently monitors and manages the irrigation requirements as well as pest controlling in the field while keeping the affordability, in terms of cost, as the same time.