Improvement in grass-seed attachments to grain-drills
For example, farmers can use mechanical seed drills to plant seeds into the soil rather than scattering them on the surface by hand, so that wild birds cannot eat them. Also, they can use advanced cultivation methods like greenhouse...
hairycallus. Thecallusis usually best developed in spikelets with an awn that twists when atmospheric humidity changes. As the awn twists, it drills the spikelet into the soil. When atmospheric humidity changes again and the awn untwists, the spikelet is held in the ground by the callus hairs...