Document Detail

Effect of different chemical and mechanical defolation methods on the skin quality of potatoes.
MedLine Citation:
PMID:  15756866     Owner:  NLM     Status:  MEDLINE    
Without foliage destruction an efficient harvest is impossible. Potatoes for the fresh market are often harvested when the foliage is still heavy green due to tuber size and starch content that must be limited. Tubers from immature vines are typically very susceptible to skinning and mechanical injury during harvest. Young tubers from immature vines need more time after foliage destruction to set periderm than tubers from senescent vines where the formation of periderm is already started. Spray schemes based on metoxuron, carfentrazone-ethyl and diquat at a dose of 300 g/ha caused slower leaf and stem desiccation. Over the 3 growing seasons it could be concluded that mechanical foliage destruction in combination with carfentrazone-ethyl + mineral oil promoted periderm formation better than the other desiccation schemes tested. A split treatment with diquat at 300 g/ha or carfentrazone-ehtyl + mineral oil followed by a second application of diquat or carfentrazone-ethyl can led to a slower periderm formation and even give secondary growth. A double treatment of diquat (300 g/ha) or carfentrazone-ethyl + mineral oil followed by diquat (600 g/ha) after 3 days gave satisfactory results. Rhizoctonia tuber infection increased with a longer field period after treatment. In general the increase was more pronounced for the spray schemes where skin set of the tubers was less fast.
G Haesaert; V Derycke; B Deroo; J Latré
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Communications in agricultural and applied biological sciences     Volume:  69     ISSN:  1379-1176     ISO Abbreviation:  Commun. Agric. Appl. Biol. Sci.     Publication Date:  2004  
Date Detail:
Created Date:  2005-03-10     Completed Date:  2005-04-14     Revised Date:  2006-12-14    
Medline Journal Info:
Nlm Unique ID:  101200320     Medline TA:  Commun Agric Appl Biol Sci     Country:  Belgium    
Other Details:
Languages:  eng     Pagination:  757-63     Citation Subset:  IM    
Hogeschool Gent, Department of Biotechnology, Landscape Architecture and Agriculture Voskenslaan 270, BE-9000 Gent, Belgium.
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MeSH Terms
Defoliants, Chemical / pharmacology*
Diquat / toxicity
Methylurea Compounds / toxicity
Plant Diseases / virology
Plant Leaves / drug effects,  physiology*
Plant Roots / physiology*
Solanum tuberosum / drug effects,  growth & development,  physiology*
Triazoles / toxicity
Viruses / drug effects,  isolation & purification
Reg. No./Substance:
0/3-(3-chloro-4-methoxyphenyl)-1,1-dimethylurea; 0/Defoliants, Chemical; 0/Methylurea Compounds; 0/Triazoles; 0/carfentrazone-ethyl; 2764-72-9/Diquat

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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