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Published in Scientific Papers. Series B. Horticulture., Vol. LVII
Written by Constanţa ALEXE, Marian VINTILĂ, Simona POPESCU, Liana-Melania DUMITRU, Gheorghe LĂMURANU, Lenuţa CHIRA

The researchers performed at the Research and Development Institute for Processing and Marketing of the Horticultural Product-Bucharest. They had as object the study of some qualitative indicators (firmness, organoleptic appreciation, chemical composition, weight and qualitative losses) of Delta cultivar nectarines at harvest as well as their evolution during the valorisation process. The nectarines – Delta cultivar (an extra-early cultivar, created by the researchers from Research Station for Fruit Growing Constanţa, in collaborate with Rutgers University, New Jersey – S.U.A.), provided from experimental plots of R. S. F. G. Constanta. They were fertilized in different manners, with organic or chemical fertilizers, applied on soil and/or foliar. The nectarines were stored in three variants: at the ambient temperature (26-280C), in cold conditions (T = 2-4°C) and cold + modified atmosphere conditions, for 5, 25 and 30 days, respectively. It was found that the quality of the nectarines and their storage capacity varies according to the fertilisation regime and the conditions in the storage environment, especially the temperature and the gaseous composition of the air. Among the fertilisation variants, the V4 variant (soil + foliar chemical fertilisation) induces the best quality and storage capacity. Foliar fertilisers ensure not only an input of macro-and micro elements but also other organic substances which stimulate the metabolism of chlorophyll assimilation, the energetic delivery and finally, the fruit quality. Of the three storage methods (ambient temperature, cold room and cold room + modified atmosphere), the best results were obtained within the third method, which recorded the smallest losses during storage.

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