Presented herein is a method for predicting suitable times for performing a soil engaging operation within a field. Ethylene and at least one copolymer can be polymerized in the presence of one or more catalysts, polypropylene particles, and one or more halocarbon compounds to produce an impact copolymer that includes the polypropylene particles and an ethylene copolymer. In this communication request, a timer value of a system timer included in the terminal apparatus is incorporated.