Increased quality and prolonged storage of sweet potatoes in Israel

The predominant sweet potato [Ipomoea batatas (L.) Lam] variety grown in Israel, ‘Georgia Jet’, is hard to store for longer than 1 month because of its low dry matter content (16%). Curing processing is a common pre-storage treatment for sweet potatoes to prevent decay. Although an effective disease...

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Bibliographic Details
Published in:Phytoparasitica 1998-12, Vol.26 (4), p.307-312
Main Authors: Afek, U, Orenstein, Janeta, Nuriel, E
Format: Article
Language:English
Subjects:
Atomizing
Combined treatment
Curing
Decay
Dry matter
Fogging
Food contamination & poisoning
Food quality
Ipomoea batatas
Iprodione
Israel
Mist
Plant diseases
Plant pathology
Potatoes
Roots
Solanum tuberosum
Spraying
Storage
Sweet potatoes
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Summary:The predominant sweet potato [Ipomoea batatas (L.) Lam] variety grown in Israel, ‘Georgia Jet’, is hard to store for longer than 1 month because of its low dry matter content (16%). Curing processing is a common pre-storage treatment for sweet potatoes to prevent decay. Although an effective disease preventative in other varieties, it was not effective with Georgia Jet. In experiments conducted during 1995–97 it was proven possible to store var. Georgia Jet for 5 months by means of disinfecting the roots with iprodione in conjunction with the curing procedure. At the end of the storage period, 14% of the roots had decayed following this combined treatment (Exp. 1): 9% suffered soft decay and had to be discarded, and 5% had dry decay, which left them suitable for the local market. Compared with these figures, decay levels following single treatments were 61% with curing, 60% with iprodione and 100% in the control group. Three methods of iprodione application were also tested (Exp. 2): dipping, spraying, and ‘Tabor’ Atomizing System fogging which produces an extremely fine mist (droplet size < 10μ. The fogging method proved to be the most effective, with 4% dry decay and 6% soft decay after 5 months of storage.
ISSN:0334-2123
1876-7184
DOI:10.1007/BF02981445