Fruit Thinning and Flower Induction with 1-Aminocyclopropane-1-carboxylic Acid (ACC Accede)

Abstract

Our trials with the new chemical thinner Accede (ACC)have shown that it gives mild thinning over a range of timings from petalfall to 20mm fruit size. At petal fall it is most effective when combined with 6-BA. At the later timings when fruits are larger than 15mm it can also stimulate return bloom of Honeycrisp.