Published in Scientific Papers. Series B, Horticulture, Vol. LXV, Issue 1
Written by Denitsa HRISTOVA, Diyan GEORGIEV, Petya IVANOVA, Boryana STEFANOVA
During the period 2016-2017, in order to improve the soil fertility and the quality of the fruit production in the RIMSA - Troyan, a nourishing conventional and organic fertilizer was applied to the plum plantation with 'Stanleyʼ cultivar. The impact of the applied fertilizers and the drying process on the quality characteristics of the plums was determined. It was found that plums in the organic chicken manure fertilization variant had the highest sensory evaluation and high quantitative values on the colour indicators, such as brightness, red and yellow colour tone. After the drying process, it was found through a heat pump dryer that the applied temperature regime t = 43 ± 2°С and φ = 10%, had an impact on the quantitative values of fruit colour. In the case of dried fruits from bio fertilization, the red and yellow components of the colour increased, and for all other fruits from the variants, including the control, they decreased significantly. Dried fruits from conventional fertilization had the highest sensory score, while dried fruits from bio fertilization had the lowest.
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