Published in Scientific Papers. Series B. Horticulture, Vol. LVI
Written by Beatrice SARKADI (MĂGURAN), Olimpia IORDĂNESCU
Peaches have a complex chemical composition, among all known components they contain 0.30-0.65 g total minerals, of which magnesium, calcium and iron being predominant, but also manganese, copper and zinc. The high content of vitamins, organic acids, manganese and potassium salts, which help in cardiac, vascular and renal diseases, and the richness of monosugars, compounds of copper, cobalt and calcium, which help in anaemia, liver diseases and obesity, all these make peaches and nectarines very important and special fruits. This article deals with the impact of chemical thinning with Ethrel in different concentrations upon the content of minerals in fruits, meaning: magnesium, iron, cobalt, manganese, copper and zinc. Data were collected in 2006 from an orchard in Periam locality, Timis County, where there are cultivated 2 varieties of peach – Spring Lady and Maja, and 2 nectarine varieties – Caldesi 2000 and Nectaross. The trees were planted at a distance of 4.0 x 2.5 m, having a density of 1000 trees/ha and the crown system is Palm Spindelbusch. The soil was maintained clean by mechanical hoes and Roundup 360 SL herbicide. Chemical thinning with Ethrel was done at 25 days after fruit binding, moment when the ovule (the future stone) had 10-12 mm, being done in four different concentrations: 125 ppm, 250 ppm, 350 ppm and 500 ppm. The results obtained showed that the content of metals in fruits varied from one variant to another, but the values did not surpass the maximum limits. The best results for each variety were obtained in those variants where thinning was done in concentrations of 250 ppm, 350 ppm and 500 ppm, but these values correlated with other physical-chemical features and the productions obtained, determine us to recommend for chemical thinning the use of Ethrel in concentrations of 250 ppm or 350 ppm.
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{tag}meta name="citation_title" content=" Researches on the impact of chemical fruit thinning with ethrel upon minerals’ content in fruits of some peach and nectarine varieties cultivated in Periam, Timiş county"{/tag} {tag}meta name="citation_journal_title" content="Scientific Papers. Series B. Horticulture"{/tag} {tag}meta name="citation_publication_date" content="2012"{/tag} {tag}meta name="citation_author" content="Beatrice SARKADI (MĂGURAN)" {/tag} {tag}meta name="citation_author" content=" Olimpia IORDĂNESCU " {/tag}
chemical composition
