Influence of postharvest handling and surfactants on control of green mold of lemons by curing

Curing lemons at 32 C in a water-saturated atmosphere was evaluated for control of green mold to determine the effects of curing time, delay of treatment, and surfactants on efficacy. Fruit were inoculated with Penicillium digitatum by wounding with a tool dipped in a suspension of 10(6) spores per...

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Bibliographic Details
Published in:Phytopathology 1994-06, Vol.84 (6), p.612-616
Main Authors: Stange, R.R. Jr. (Massey University, Palmerston North, New Zealand.), Eckert, J.W
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
ALMACENAMIENTO EN FRIGORIFICOS
BIODETERIORATION
BIODETERIORO
Biological and medical sciences
CALIFORNIA
CALIFORNIE
CITRON
Citrus limon
Control
CONTROL DE ENFERMEDADES
CONTROLE DE MALADIES
Food industries
Fruit and vegetable industries
Fundamental and applied biological sciences. Psychology
Fungal plant pathogens
LIMON ACIDO
MANIPULACION
MANUTENTION
Other methods
PENICILLIUM DIGITATUM
PERDIDAS POSTCOSECHA
PERTE APRES RECOLTE
Phytopathology. Animal pests. Plant and forest protection
PROCESAMIENTO
STOCKAGE AU FROID
SURFACTANT
SURFACTANTES
TRAITEMENT
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Summary:Curing lemons at 32 C in a water-saturated atmosphere was evaluated for control of green mold to determine the effects of curing time, delay of treatment, and surfactants on efficacy. Fruit were inoculated with Penicillium digitatum by wounding with a tool dipped in a suspension of 10(6) spores per milliliter. For fruit inoculated 18 h prior to treatment, curing 36-48 h was required for optimal disease control. In two of three experiments, curing for 48 h resulted in disease control comparable to dipping in 1 g of imazalil per liter. The curing treatment could be delayed 24 h after inoculation without reducing the effectiveness of the treatment. When fruit inoculated 24 h earlier were immersed in water containing sodium dodecylbenzenesulfonate (SDBS) at 1 g/L and then cured 18 h, decay control was improved by 41-73% compared to the water-dipped cured control. The viability of P. digitatum conidia and germlings on potato-dextrose agar (PDA) was not affected by incubation at 30 C for 24 h or by plating onto PDA containing 40 micrograms of SDBS/ml. However, the combination of these two treatments resulted in mortalities of 66 and 92% for conidia and germlings, respectively, suggesting that the combination of these treatments was lethal
ISSN:0031-949X
1943-7684
DOI:10.1094/phyto-84-612