A little curiosity goes a long way.

Yes—in an experiment with Aseman dryland wheat, zinc, iron, and combined foliar sprays significantly increased grain zinc and iron concentrations, protein content, and yield compared with a pure-water control. The combined spray increased grain yield by 42.48%, with grain protein reaching 11.45% versus 7.87% in the control.

Yes: the leading compound differed across the three preparations—(E)-2-decen-1-ol (23.60 %) in hydrodistilled oil, cis-3-hexenol (12.84 %) among free aroma volatiles, and linalool (74.50 %) in the glycosidically bound fraction.