Brazilian President Jair Bolsonaro has said he won't use pens made by French company Bic following his spat with President Emmanuel Macron over fires in the Amazon.

Bolsonaro said Friday he would sign presidential pardons for imprisoned police officers using Brazilian pen-maker Compactor.

"No more Bic," said the far-right president who has faced international criticism over devastating fires in Brazil's Amazon region.

Bic headquarters declined to comment on Saturday, saying only that Bic pens sold in Brazil are made in a factory in Manaus in the Amazon.

On Thursday, Bolsonaro said he would "use Compactor pens, not Bic... because Bic is French."

Bolsonaro and Marcon have had a series of clashes since Macron suggested that fires in the Amazon were an "international crisis," which Bolsonaro said undermined Brazil's sovereignty.

Bolsonaro has also partially backtracking on a decree that banned most fires for land-clearing for 60 days, now saying the ban will only apply to the Amazon region.

The government on Friday published a decree saying fires for agriculture outside the Amazon region would be allowed with authorisation from state environmental authorities. A day earlier, it published a ban on such fires nationwide in response to an international outcry over fires in the Amazon.

Brazil's National Space Research Institute says fires have increased about 80% in Brazil this year when compared to the same period last year. A little over half those fires are in the Amazon.

The European Space Agency's Copernicus satellite program showed smoke from the Amazon fires reaching Brazil's southeast coast, thousands of kilometers away.