<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>In field experiment conducted in 2005-2007 the effect of a nitrogen source (ammonium nitrate, ammonium sulphate and ENTEC-26) in the amounts of 50, 100, 150, 100+50 kg N·ha<sup>-1</sup> in onion (<italic>Allium cepa</italic> L.) Wolska cv. grown from sets for early cropping were estimated. Results of the experiment showed that ENTEC-26 was equally good source of nitrogen as ammonium nitrate and less efficient than ammonium sulphate. Split application of ammonium sulphate and ammonium nitrate produced higher while of ENTEC-26 similar yield of onion in comparison to a preplant single dose of fertilizer. Onion fertilized with ammonium nitrate and ammonium sulphate had only slightly higher content of vitamin C in bulbs and leaves than that fertilized with ENTEC-26. Plants of onion fertilized with ENTEC-26 contained also slightly higher level of reducing sugars in bulbs than by using the other source of N</p></abstract>

In field experiment conducted in 2005-2007 the effect of a nitrogen source (ammonium nitrate, ammonium sulphate and ENTEC-26) in the amounts of 50, 100, 150, 100+50 kg N·ha-1 in onion (Allium cepa L.) Wolska cv. grown from sets for early cropping were estimated. Results of the experiment showed that ENTEC-26 was equally good source of nitrogen as ammonium nitrate and less efficient than ammonium sulphate. Split application of ammonium sulphate and ammonium nitrate produced higher while of ENTEC-26 similar yield of onion in comparison to a preplant single dose of fertilizer. Onion fertilized with ammonium nitrate and ammonium sulphate had only slightly higher content of vitamin C in bulbs and leaves than that fertilized with ENTEC-26. Plants of onion fertilized with ENTEC-26 contained also slightly higher level of reducing sugars in bulbs than by using the other source of N

The Effect of Nitrogen Fertilization on Yield and Nutritional Value of Onion Grown from Sets for Early Cropping

Department of Horticulture, Wroclaw University of Environmental and Life Sciences, pl. Grunwaldzki 24 A, 50-363 Wroclaw, Poland

Journal of Fruit and Ornamental Plant Research

In field experiment conducted in 2005-2007 the effect of a nitrogen source (ammonium nitrate, ammonium sulphate and ENTEC-26) in the amounts of 50, 100, 150,...

The Effect of Nitrogen Fertilization on Yield and Nutritional Value of Onion Grown from Sets for Early Cropping

Published Online: Jul 31, 2009

Page range: 145 - 151

DOI: https://doi.org/10.2478/v10032-009-0014-y

Keywords
nitrogen source, N rate, nutritional value

This content is open access.

The Effect of Nitrogen Fertilization on Yield and Nutritional Value of Onion Grown from Sets for Early Cropping

Published Online: Jul 31, 2009

Page range: 145 - 151

DOI: https://doi.org/10.2478/v10032-009-0014-y

Keywordsnitrogen source, N rate, nutritional value

This content is open access.

Keywords
nitrogen source, N rate, nutritional value