VG is a substituted amino acid derived via fermenting the naturally occurring antibiotic rhizobitoxine. After its activity was discovered in 1972, it received a federal Experimental Use Permit in 1995 and a Section 2C label in 1997. It is formulated by Valent BioSciences as a 15% active ingredient wettable powder under the trade name ReTain. AVG is approved for organic use, but check acceptability with individual certifiers. AVG temporarily inhibits ethylene biosynthesis by blocking the vital enzyme ACC synthase, required in the ethylene synthesis pathway. This contrasts with NAA, which acts strictly as an abscission control agent, and often hastens […]