Wireless Sensor Networks (WSNs) have attracted much attention in recent years. The potential applications of WSNs

are immense. They are used for collecting, storing and sharing sensed data. WSNs have been used for various applica-

tions including habitat monitoring, agriculture, nuclear reactor control, security and tactical surveillance. The WSN

system developed in this paper is for use in precision agriculture applications, where real time data of climatologically

and other environmental properties are sensed and control decisions are taken based on it to modify them. The architec-

ture of a WSN system comprises of a set of sensor nodes and a base station that communicate with each other and

gather local information to make global decisions about the physical environment. The sensor network is based on the

IEEE 802.15.4 standard and two topologies for this application. -Wireless Sensor Networks (WSNs) have attracted much attention in recent years. The potential applications of WSNs

are immense. They are used for collecting, storing and sharing sensed data. WSNs have been used for various applica-

tions　including　habitat　monitoring,　agriculture,　nuclear　reactor　control,　security　and　tactical　surveillance.　The　WSN

system developed in this paper is for use in precision agriculture applications, where real time data of climatologically

and other environmental properties are sensed and control decisions are taken based on it to modify them. The architec-

ture　of　a　WSN　system　comprises　of　a　set　of　sensor　nodes　and　a　base　station　that　communicate　with　each　other　and

gather local information to make global decisions about the physical environment. The sensor network is based on the

IEEE 802.15.4 standard and two topologies for this application.