Abstract
Soy is currently the main crop in the national market, occupying around 35 million hectares planted (1.4 times the size of the state of São Paulo) and generating annual revenue of approximately R$ 110 billion. The disease that most plagues this crop is Asian rust (Phakopsora pachyrhizi), a biotrophic fungus that spreads through spores in the air and that, without correct defensive managem…