This paper presents an Intelligent Informatics Platform, which feed information for decision making in a Precision Agriculture environment. One major challenge faced by agriculture in Malaysia is crop productivity. There is a clear need for Information and Communications Technology (ICT) adoption in the management of crops. ICT can help not only in the monitoring of the crop, but also to provide assistance in the form of decision support for the plantation operators. Various sensors being deployed at the plantation, together with observations from the farmers and rules defined by the domain expert, Intelligent Informatics Platform (I2P) will be able to produce advices for the farm operators on the condition of the crops and also the mitigation plan if the system identified any problems. This is made possible with the use of ontology with OWL and SWRL reasoning.