The 2011–12 Plunket Shield season was the 86th season Competition of official first class domestic cricket in New Zealand .

The Plunket Shield and other domestic cricket in New Zealand has traditionally been broadcast Expressing_publicly ball-by-ball by Radio New Zealand ( RNZ ) and more recently by Radio Sport after parts of RNZ were privatised Change in the 1990s .

This season marked Process_end a historic milestone when Radio Sport decided Deciding to not provide Supply any live commentary of the Plunket Shield , .