Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
2008
Volume 11
Issue 4
Topic:
Horticulture
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Ochmian I. , Grajkowski J. , Skupień K. 2008. EFFECT OF THREE SUBSTRATES ON FRUIT AND LEAF CHEMICAL COMPOSITION OF HIGHBUSH BLUEBERRY 'SIERRA' CULTIVAR, EJPAU 11(4), #12.
Available Online: http://www.ejpau.media.pl/volume11/issue4/abs-12.html

EFFECT OF THREE SUBSTRATES ON FRUIT AND LEAF CHEMICAL COMPOSITION OF HIGHBUSH BLUEBERRY 'SIERRA' CULTIVAR

Ireneusz Ochmian1, Józef Grajkowski2, Katarzyna Skupień3
1 Department of Horticulture, West Pomeranian University of Technology in Szczecin
2 Department of Pomology, Agricultural University of Szczecin, Poland
3 Laboratory of Plant Raw Materials Processing and Storage, Agricultural University, Szczecin, Poland

 

ABSTRACT


The objective of the study was to assess the influence of peat, sawdust and cocoa husk substrates on leaf and fruit chemical composition of blueberry 'Sierra' cv. Regarding minerals content, the plants grown in cocoa husk substrate displayed the highest content of N, P, K both in leaves (25.35, 1.22, and 9.19 g kg-1, respectively) and berries (16.22, 1.21, and 7.90 g kg-1 respectively) as well as Mn in the leaves (115.5 mg kg-1). The berries obtained from bushes cultivated in sawdust showed the highest Ca (1.73 g kg-1), Mg (1.25 g kg-1), Zn (10.75 mg kg-1), and Fe (60.49 mg kg-1) content in the leaves, and Cu in the leaves and berries (1.97 and 2.40 mg kg-1, respectively). On the other hand, fruit originating from bushes grown in peat sub-strate had greatest leaf and berry S status (2.18 and 1.48 mg kg-1, respectively) and Ca and Mg content in fruit (0.14 and 0.42 g kg-1, respectively). In contrast, the substrates did not affect considerably Fe and Mn content in berries. Comparing nutritive value of fruit it could be concluded that the usage of sawdust substrate yielded the berries of highest soluble solids (15.3%), total sugar (12.58 g 100g-1), titratable acidity (1.16%) and antioxidant capacity (42.35 µmol Trolox g-1). However, the greatest amount of vitamin C (34.1 mg 100g-1) was found in berries originating from the plants grown in peat substrate. No effect of substrate was observed regarding juice extraction efficiency (88.1-88.7%). The all berries did not surpass allowed nitrate and nitrite levels.

Key words: Vaccinium corymbosum, fruit chemical composition, macro- and microelements, mulch.


Ireneusz Ochmian
Department of Horticulture, West Pomeranian University of Technology in Szczecin
phone +48 91 449 61 61
Słowackiego 17, 71-434 Szczecin
POLAND
email: ochir@o2.pl

Józef Grajkowski
Department of Pomology,
Agricultural University of Szczecin, Poland
8 Janosika, 71-432 Szczecin, Poland
Phone: (+48 91) 422-08-51 ex. 325
email: jgrajkowski@o2.pl

Katarzyna Skupień
Laboratory of Plant Raw Materials Processing and Storage,
Agricultural University, Szczecin, Poland
Słowackiego 17, 71-434 Szczecin, Poland
Phone: (+48 91) 425-03-43
email: kskupien@agro.ar.szczecin.pl

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.