EJPAU 2012. Lipa T. EFFECT OF CULTIVAR, POSITION OF FRUITS IN TREE-CROWN AND OF SUMMER PRUNING ON SURFACE TEMPERATURE OF APPLES AND PEARS

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.

2012
Volume 15
Issue 2

Topic:

Horticulture

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Lipa T. 2012. EFFECT OF CULTIVAR, POSITION OF FRUITS IN TREE-CROWN AND OF SUMMER PRUNING ON SURFACE TEMPERATURE OF APPLES AND PEARS, EJPAU 15(2), #03.
Available Online: http://www.ejpau.media.pl/volume15/issue2/abs-03.html

EFFECT OF CULTIVAR, POSITION OF FRUITS IN TREE-CROWN AND OF SUMMER PRUNING ON SURFACE TEMPERATURE OF APPLES AND PEARS

Tomasz Lipa
Department of Pomology, University of Life Sciences in Lublin

ABSTRACT

Extensive studies (2006–2009) on the influence of apple and pear fruit surface temperature, in dependence on the fruit position in tree canopy and summer pruning, were conducted in a commercial orchard in Lublin district, Poland. There was a significant effect of fruit position in the canopy on heat accumulation in fruit surface. Fruits born in southern part of the canopy were more heated than those from other tree parts. It was found that a blush contributed to an increase of fruit temperature, especially those from southern parts of the canopy. Summer pruning significantly contributed to heat accumulation in apples. The percentage of fruits from summer pruned trees characterized by temperature >35°C was more than doubled in comparison with fruit from not treated trees.

Key words: temperature of apple, pear, summer pruning, blush.

Tomasz Lipa
Department of Pomology, University of Life Sciences in Lublin
Leszczyńskiego 58,
20-068 Lublin, Poland

email: tomasz.lipa@up.lublin.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.