Shoppers attending Jan Powers Farmers Market at the Brisbane Powerhouse on Saturday have been pictured flouting social-distancing rules, despite market organisers outlining and encouraging all market-goers to follow recommended precautions just hours earlier.

The breaches came as the number of coronavirus cases in Queensland hit 900 after an overnight increase of 27. However, Health Minister Steven Miles said the rate of increase had slowed by more than half in the past week.

Shoppers at Jan Powers Farmers Market at the Brisbane Powerhouse on Saturday ignore the social-distancing requirements. Credit:Reece D'Alessandro - Nine News Queensland

On Friday, Jan Powers Farmers Market posted on Facebook that its Brisbane Powerhouse and Manly sites would be open the next day, but with COVID-19 precautions in place, such as social distancing, hand-washing stations, no seating, pre-packaged products, and only takeaway food available.

The organisers told customers to "come in, get what you need, be quick". They asked shoppers to stay 1.5 metres apart and recommended having only one person per household attend the markets.