COLOUR PARAMETERS OF FRESH AND DRIED PLUM FRUIT OF CULTIVAR ‘TEGERA’, AFTER APPLICATION OF SOME CONVENTIONAL AND ORGANIC FERTILIZERS
Keywords:
plum, ferilization, brightness of colour, colour parametersAbstract
The influence of some fertilizers with conventional and biological application on the color parameters of fresh and dried plum fruits of ‘Tegera’ cultivar is studied. The trees are cultivated in a collection plantation of the Research Institute of Mountain Stockbreeding and Agriculture - Troyan. The indicators were reported by the CIE Lab system in three colour coordinates L - color brightness, + a - red color; + b - yellow color. It was found that in fresh fruit plums after the application of bio fertilizers the quantitative value was increased for two indicators: brightness of the colour and yellow colour tone compared to the control. Red and yellow colour values in dried fruit were higher for conventional fertilization.
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