Auxigro

Auxigro is a growth-enhancer that is approved in the United States by the United States Environmental Protection Agency for spray on fruits, vegetables, and grains. It is a mixture of equal parts gamma-aminobutyric acid (GABA), casein hydrolysate and glutamic acid dissolved in water.

Auxigro contains monosodium glutamate (MSG). It increases yield of potato if applied soon after emergence but not later.