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For wheat rust, however, which is windborne as opposed to being carried by seed, it is not always the case that new strains come from outside the region.

Poland cites a litany of diseases to which the grass is resistant, with names like a lineup of underground rock bands: barley yellow dwarf, mosaic virus, wheat rust.

In the 1950s, wheat rust spread through North America and destroyed up to 40% of the crop.

Look, I got a new spray for the wheat rust.

Often, the spaces are hermetically sealed to prevent common plant diseases, like wheat rust, from blowing through.