Production of rocket (Eruca sativa Mill.) on plug trays and on a floating system in relation to reduced nitrate content

Authors

  • Marijana JAKŠE University of Ljubljana, Biotechnical Faculty, Agronomy department, Jamnikarjeva 101, S1 - 1111 Ljubljana, Slovenia
  • Janez HACIN niversity of Ljubljana, Biotechnical Faculty, Department of Food science and technology, Jamnikarjeva 101, S1 - 1111 Ljubljana, Slovenia
  • Nina KACJAN MARŠIĆ University of Ljubljana, Biotechnical Faculty, Agronomy department, Jamnikarjeva 101, S1 - 1111 Ljubljana, Slovenia

DOI:

https://doi.org/10.14720/aas.2013.101.1.14947

Keywords:

fertigation, biostimulant, rock-wool flocks, vermiculite

Abstract

The effect of the growth system on the yield and nitrate content of rocket (Eruca sativa Mill.) was evaluated in two experiments. In the first experiment, different sizes of cells in plug trays and different fertilization treatments were tested. In the second, a floating system was used with different substrates and the nitrate content in rocket leaves was analysed. The size of the cells did not affect the yield of rocket significantly but the yield was notably higher (2.02 - 2.21 kg m-2) when plugs were fertigated once per week with 6:12:36 + ME + natural biostimulant in comparison with plugs fertigated only with a water soluble fertilizer (1.53 - 1.74 kg m-2). The best yield was obtained in vermiculite and perlite in 20 ml cells (2.13 and 1.89 kg m-2). The different substrates used in the floating system had no effect on the dry matter content, which was on average 13.7 % and was significantly lower than the dry matter content of leaves grown in peat (19.1 %). The nitrate content in leaves measured a day before and 10 days after the replacement of the nutrient solution with tap water, fell greatly from 4,288-6,764 mg NO3 kg-1 FW to 52-634 mg NO3 kg-1 FW.

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Published

9. 04. 2013

Issue

Section

Original Scientific Article

How to Cite

JAKŠE, M., HACIN, J., & KACJAN MARŠIĆ, N. (2013). Production of rocket (Eruca sativa Mill.) on plug trays and on a floating system in relation to reduced nitrate content. Acta Agriculturae Slovenica, 101(1), 59–68. https://doi.org/10.14720/aas.2013.101.1.14947

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