Colour parameters of fresh and dried plum fruit of cultivar ‘Tegera’, after application of some conventional and organic fertilizers

DENITSA HRISTOVA¹; DIYAN GEORGIEV¹; BORYANA BRASHLYANOVA²; PETYA IVANOV^2
1 Research Institute of Mountain Stockbreeding and Agriculture, 5600 Troyan, Bulgaria
² Food Research and Development Institute, 4003 Plovdiv, Bulgaria

Abstract

Hristova D., D. Georgiev, B. Brashlyanova and P. Ivanova, 2018. Colour parameters of fresh and dried plum fruit of cultivar ‘Tegera’, after application of some conventional and organic fertilizers, Bulg. J. Agric. Sci., 24 (Suppl. 2): 48-51

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; - b – blue 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.

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

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