Developed and manufactured by Valent BioSciences in the USA, it is distributed in Britain by Interfram UK.
According to Interfarm technical manager Dr David Stormonth: "MaxCel prevents fruitlets below a certain size from developing further, while fruitlets above a certain size will grow on successfully. Expensive hand-thinning costs are reduced and fruit size is increased."
It also promotes strong blooming the following year, he added. Only one application is needed per season, but at temperatures above 15 degsC.