Control of postharvest storage rots of apples and pears in The Netherlands

M. Wenneker, J. Köhl, P.J. van Leeuwen, K.T.K. Pham, A.C.R. van Schaik

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

Postharvest diseases are a major problem in long storage of apples and pears in The Netherlands. Despite intensive preharvest spraying programs significant losses occur. Over 150 heavily affected many apples (mainly 'Elstar') and pears (mainly 'Conference') from packinghouses in different regions of The Netherlands were evaluated for decay symptoms and causal organisms. Assessments showed that the most important pathogens are Neofabraea spp. (apples and pears) and Cadophora spp. (pears). Infection by these two pathogens occurs in the orchard but remains latent until storage. Other pathogens such as Botrytis spp., Pencillium spp., Fusarium spp., Alternaria spp., and Cladosporium spp. were isolated at low frequencies and are considered of minor importance. However, new problems with sooty blotch and lenticel rot of apple were noticed, most likely caused by other, not yet identified pathogens. Pathogenicity testing and characterization of isolates are on-going. For major pathogens, qPCR assays are developed. Samples of substrates (e.g., leaves, cankers, soil) were monthly taken from 10 apple and 10 pear orchards in 2012. Samples were assessed using the qPCR assays for presence and dynamics of pathogen populations. This information on the pathogen life cycles is needed for the development of innovative strategies to prevent postharvest losses. Storage conditions may significantly influence disease development. Recently, the project “KWALIFRUIT” was launched to identify the optimum harvest stage of pome fruit and optimal storage conditions for maximum fruit quality and storage life and minimal postharvest losses.
Original languageEnglish
Pages (from-to)189-194
JournalActa Horticulturae
Volume1144
DOIs
Publication statusPublished - 2016

Fingerprint

pears
Netherlands
apples
pathogens
postharvest losses
storage conditions
Neofabraea
orchards
Cadophora
cankers (plants)
pome fruits
packing houses
postharvest diseases
Cladosporium
Botrytis
Alternaria
assays
quality of life
spraying
signs and symptoms (plants)

Cite this

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abstract = "Postharvest diseases are a major problem in long storage of apples and pears in The Netherlands. Despite intensive preharvest spraying programs significant losses occur. Over 150 heavily affected many apples (mainly 'Elstar') and pears (mainly 'Conference') from packinghouses in different regions of The Netherlands were evaluated for decay symptoms and causal organisms. Assessments showed that the most important pathogens are Neofabraea spp. (apples and pears) and Cadophora spp. (pears). Infection by these two pathogens occurs in the orchard but remains latent until storage. Other pathogens such as Botrytis spp., Pencillium spp., Fusarium spp., Alternaria spp., and Cladosporium spp. were isolated at low frequencies and are considered of minor importance. However, new problems with sooty blotch and lenticel rot of apple were noticed, most likely caused by other, not yet identified pathogens. Pathogenicity testing and characterization of isolates are on-going. For major pathogens, qPCR assays are developed. Samples of substrates (e.g., leaves, cankers, soil) were monthly taken from 10 apple and 10 pear orchards in 2012. Samples were assessed using the qPCR assays for presence and dynamics of pathogen populations. This information on the pathogen life cycles is needed for the development of innovative strategies to prevent postharvest losses. Storage conditions may significantly influence disease development. Recently, the project “KWALIFRUIT” was launched to identify the optimum harvest stage of pome fruit and optimal storage conditions for maximum fruit quality and storage life and minimal postharvest losses.",
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Control of postharvest storage rots of apples and pears in The Netherlands. / Wenneker, M.; Köhl, J.; van Leeuwen, P.J.; Pham, K.T.K.; van Schaik, A.C.R.

In: Acta Horticulturae, Vol. 1144, 2016, p. 189-194.

Research output: Contribution to journalArticleAcademicpeer-review

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