บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Postharvest physiological disorders, diseases and mineral concentrations of organically and conventionally grown McIntosh and Cortland apples.

DeEll, J. R.; Prange, R. K.;

Canadian Journal of Plant Science Year: 1993 Vol: 73 Issue: 1 Pages: 223-230 Ref: 28 ref.

1993

บทคัดย่อ

Postharvest physiological disorders, diseases and mineral concentrations of organically and conventionally grown McIntosh and Cortland apples.

Environmental effects and human health risks associated with synthetic chemicals have prompted several apple growers to convert to organic production. Organically and conventionally grown cv. McIntosh and cv. Cortland apples were stored in refrigerated (3 deg C) ambient air and controlled atmospheres (CA) and evaluated for 2 consecutive years. More of the conventionally grown apples were marketable after storage than of the organically grown apples. Organically grown apples had higher incidence of storage rots (Penicillium expansum, Botrytis cinerea and Gloeosporium perennans [Pezicula malicorticis]), apple scab (Venturia inaequalis) and russeting. Production method did not influence incidence of brown core. Organically grown McIntosh stored in ambient air for 8 months had the highest incidence of senescent breakdown. Conventionally grown McIntosh stored in CA for 8 months had the highest incidence of internal browning. Conventionally grown McIntosh stored in air had a higher incidence of scald

than organically grown McIntosh. After 4 months of storage in air, organically grown McIntosh had the highest incidence of splitting. Production method did not affect fruit Ca or Mg concentrations. Organically grown apples had higher P and K concentrations and lower N concentrations than conventionally grown apples.