The initiative suggests grain handlers may be responding to pressure to support conservation efforts as China's appetite for soybeans drives acreage and production growth in Brazil.
The loans are targeted at farm operations based in Brazil's Cerrado, a vast tropical savanna where more than 105,000 square kilometers (40,540 square miles) of wild vegetation have been destroyed since 2008, according to government figures.
The Cerrado is one of the fastest growing soybean regions in Brazil, the world's second-largest producer and biggest exporter of the oilseeds.
Farmers are forecast to expand the country's soybean planted area for the 12th consecutive year, to just above 36 million hectares, amid strong demand from buyers in Asia in the 2018/2019 cycle that kicks off in September.