Much of the world's farmland is already at risk from palmer amaranth. The threat could spread further north as the climate warms.
Scientists are finding microbes that are good for crops but bad for weeds.
Scientists identified the key gene that helps certain rice varieties keep their heads above water.
Drones may spare groves from mass infestation.
Farmers, scientists and beekeepers are working to raise blue orchard mason bees to pollinate valuable orchard crops.
New study shows how sand sedges lure beneficial bacteria to their roots.