Grey mould (Botrytis cinerea Pers. Fr) on petunia and ageratum in the production of seedlings
Keywords:
ageratum; cultivation; grey mould; petuniaAbstract
In greenhouse without heating petunia and ageratum plants have been tested. They were inoculated with solution of three concentrations (1 x 105, 0.5 x 105 and 0.1 x 105 cm3) inoculums of B. cinerea Pers. The pathogen was cultivated on potato-dextrose agar, and we calculated attacked plant surface using McKinney’s formula. The symptoms of disease have been described (on leaves and flowers) and has been found that when we increase the pathogen , the percentage of the surface attacked grow and disease spread was more quickly. The appearance of botrytis on seedlings before planting in open areas is during a period where climatic conditions are favorable for pathogen and disease development and can cause losses or completely destroyed them and also the decorativeness will be goes down.
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