EJPAU 2005. Wadas W. , Jabłońska-Ceglarek R. , Kosterna E. THE NITRATES CONTENT IN EARLY POTATO TUBERS DEPENDING ON GROWING CONDITIONS

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.

2005
Volume 8
Issue 1

Topic:

Horticulture

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Wadas W. , Jabłońska-Ceglarek R. , Kosterna E. 2005. THE NITRATES CONTENT IN EARLY POTATO TUBERS DEPENDING ON GROWING CONDITIONS, EJPAU 8(1), #26.
Available Online: http://www.ejpau.media.pl/volume8/issue1/abs-26.html

THE NITRATES CONTENT IN EARLY POTATO TUBERS DEPENDING ON GROWING CONDITIONS

Wanda Wadas¹, Romualda Jabłońska-Ceglarek², Edyta Kosterna¹
¹ Department of Vegetable Crops, Podlasie University in Siedlce, Poland
² Department of Vegetable Crops, Podlasie University in Siedlce, Poland

ABSTRACT

The effect of the potato cultivation way (without covering and under agrotextile covering in period from planting to the plant heigh of 15 cm) and the level of nitrogen fertilization (without nitrogen, 30, 60, 90 kg N ha^-1) on the nitrates content in tubers of very early potato cultivars ('Aster', 'Drop') was estimated. The potatoes were harvested after 60 and 75 days from planting.

The forceing of plant vegetation by agrotextile covering resulted in a decrease of the nitrates content in tubers, especially at a very early date of potato harvest. After 60 days from planting the nitrates content in tubers of potato cultivated under cover was lower on average by 8.78 mg NaNO₃ kg^-1 f. w. (5.54%), in comparison to the cultivation without plant covering. After two-week delay of potato harvest the result of the use of cover were smaller and non-statistically confirmed.

With increasing the level of nitrogen fertilization followed increase the nitrates content in tubers. Higher increase this form of nitrogen content, as a result of increasing the dose of nitrogen, was found in tubers of 'Aster' cultivar, than of the 'Drop'. The nitrates content in tubers of 'Aster' cultivar was higher on average by 25.33 mg NaNO₃ kg^-1 f. w. (16.87%) after 60 days from planting, and by 25.55 mg NaNO₃ kg^-1 f. w. (18.02%) after 75 days from planting, in comparison of the `Drop´ cultivar.

Key words: early potato, agrotextile cover, nitrogen fertilization, nitrates.

Wanda Wadas
Department of Vegetable Crops,
Podlasie University in Siedlce, Poland
14 B. Prusa Street, 08-110 Siedlce, Poland
tel. (+48 25) 643 12 76
email: wwadas@ap.siedlce.pl

Romualda Jabłońska-Ceglarek
Department of Vegetable Crops,
Podlasie University in Siedlce, Poland
14 B. Prusa Street, 08-110 Siedlce, Poland
Phone: (+48 25) 643 12 76
email: rjablon@ap.siedlce.pl

Edyta Kosterna
Department of Vegetable Crops,
Podlasie University in Siedlce, Poland
14 B. Prusa Street, 08-110 Siedlce, Poland
tel. (+48 25) 643 12 76

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