ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Influence of harvesting date, DPA treatment and storage conditions on scald appearance Granny Smith from sandy soil

Gvozdenovic D. and Magazin N.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.107

2004

บทคัดย่อ

Scald is economically most important nonparasite disease which can occur in storage chamber. In conditions of Suboticko-horgoska sandy terrain (north of Serbia) o­n sandy soil ripening of Granny Smith is much faster then in other regions with black soils. Practically, scald is unavoidably in these conditions unless we use post ripening in storage chambers and store apples. With this option fruit quality decrease especially because of reduced acids content and change of fruits colour.

As we had known that the end of October is critical when observing first frosts in this region, we set a trial with three picking dates in October two DPA concentrations (1200 and 1800 ppm) with adding irol and storage in NA and CA conditions.

Trials had shown that for apples from sands both DPA concentrations were very effective in all three picking times in NA and CA conditions of storage. Although scald appearance in control treatment is CA conditions was highly reduced in terms of intensity and number of appearance, treatment with DPA is needed probably with lower concentration than it is used.