Chowrasia, who has limited starts on the European Tour, had one birdie against two bogeys in his 73.
Meanwhile, Joachim B Hansen moved into the clubhouse lead with a four under par 68, before heavy rain and the resulting flooded greens causes an overnight suspension.
After the beginning of the 23rd edition of the tournament was delayed by 24 hours, and a further one hour and 50 minutes on Friday morning, due to strong winds, the first round finally got underway at 9:40am on Friday at Clube de Golfe do Santo da Serra.
Hansen was one clear of Frenchmen Jean-Baptiste Gonnet and Adrien Saddier as well as Englishman Andrew Marshall, who all carded 69s.