COLOUR PARAMETERS OF FRESH AND DRIED PLUM FRUIT OF CULTIVAR TEGERA, AFTER APPLICATION OF SOME CONVENTIONAL AND ORGANIC FERTILIZERS

Boryana Brashlyanova, Denitsa Hristova, Petya Ivanova, Diyan Georgiev

Abstract: 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 Moun¬tain 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 fertil¬izers 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.

Keywords: brightness of colour; colour parameters; ferilization; plum

Date published: 2018-06-01