Work

Effects of Annual Sprays of Succinic Acid-2,2-dimethylhydrazide on Vegetative Growth, Fruiting, Fruit Quality and Pre-Harvest Drop of ‘Delicious’ Apple Trees1

Year: 1971

Type: article

Abstract: Six consecutive, single, annual applications of succinic acid–2,2-dimethylhydrazide (SADH) were applied, commencing with 2-year-old trees, in mid-July (51-67 days after full bloom) or mid-August at rates of 1000, 2000 or 4000 ppm. Other trees in the same block received 3 consecutive annual applications of 500 or 1000 ppm SADH in mid-June (31-40 days after full bloom) or mid-July. All SADH treatments delayed fruit flesh softening and reduced the severity of watercore and pre-harvest drop, but had no effect on trunk circumference increase, amount of bloom and fruit set. There was no terminal growth suppression of practical significance. With the exception of 500 ppm in mid-June or mid-July, all SADH treatments depressed fruit size. SADH suppressed rate of fruit growth and induced the formation of flatter fruits with shortened, thickened stems.

Source: Journal of the American Society for Horticultural Science

DOI: 10.21273/jashs.96.5.687

Author: William J. Lord

Institution: University of Massachusetts Amherst

Language: English

Topic: Postharvest Quality and Shelf Life Management

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: hybrid

Estimated APC paid: $3,500