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.
2007
Volume 10
Issue 2
Topic:
Environmental Development
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Janik G. 2007. DIURNAL DYNAMICS OF WATER INTAKE BY ROOTS OF CELERIAC , EJPAU 10(2), #21.
Available Online: http://www.ejpau.media.pl/volume10/issue2/abs-21.html

DIURNAL DYNAMICS OF WATER INTAKE BY ROOTS OF CELERIAC

Grzegorz Janik
Institute of Environment Management and Protection, Wrocław University of Environmental and Life Sciences, Poland

 

ABSTRACT



The study presented in this paper was concerned with the search for a method for determination of the temporal and spatial distribution of the intensity of water intake by celeriac roots. A field experiment carried out permitted the demonstration of the applicability of the TDR technique for the determination of the dynamics of moisture in the active layer of soil surrounding celeriac roots. Knowledge of the dynamics was used to design a water balance in which the only unknown was the amount of water taken up by the crop under study. It was found that water intake by celeriac roots takes place primarily close to the axis of symmetry of the plant, in the layer immediately adjacent to the main root. Moreover, it was found that approx. 90% of water is taken in by the plant during the daylight period. The information may be treated as indicative in the design of irrigation systems placement – e.g. of drip-irrigation lines, and of the timing of their operation. Ultimately, it was demonstrated that drip-irrigation lines should be located as close as possible to the centre point of celeriac roots and coincide as much as possible with the axis of symmetry of the plant, and that the irrigation systems should be turned on only during the daytime.

Key words: TDR technique, root celery, water requirements.


Grzegorz Janik
Institute of Environment Management and Protection,
Wrocław University of Environmental and Life Sciences, Poland
Plac Grunwaldzki 24, 50-363 Wrocław, Poland
Phone: 071 320 55 38, 320 55 39, 515 181 259
email: janik@miks.ar.wroc.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.