We were fortunate enough to be working in some areas of high agricultural production. The bright red soils in southern Brazil are certainly something that sticks in your mind. The camera doesn’t capture the true colour of them.
These soils are highly oxidised, which results in them having the bright red colours due to the presence of iron oxide. These Oxisols, as they are classified, have formed from high weathering of tropical, rain forest soils.
Due to the high concentration of oxides, phosphate availability can be a management issue, so similarly to Australia improved phosphate efficiency is a key focus.