A new disease is plaguing cornfields across the Midwest. Phyllachora maydis is the fungus that causes a corn disease called ...

That includes the fungus tar spot. Showing up as black speckled dots on plant leaves, tar spot has the potential of severely reducing yield, with some reported losses of 20 bu. to up to 100 bu ...

and if we’re not to that black layer timeframe, then we’re going to lose some of that weight in that that ear,” says Telenko. Tar spot starts in the leaf, and once it consumes the leaf ...