October 28 (SeeNews) - Croatian fertiliser producer Petrokemija [ZSE:PTKM-R-A] said on Thursday its consolidated net profit plummeted to 16 million kuna ($2.5 million/2.1 million euro) in the first nine months of 2021, from 314 million kuna in the same period of 2020, on rising natural gas prices and CO2 emission allowances, shrinking demand and an overhaul of its production capacities.