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| Haase, Dipl.-Ing.agr. Thorsten; Schüler, Dr. Christian; Kölsch, Ing. Eberhard; Heß, Prof. Dr. Jürgen; Haase, Dr. Norbert U.. |
| The effect of different sources of K and N on graded yields, dry matter, reducing sugars and quality of french fries and crisps, respectively were examined in two maincrop varieties (AGRIA and MARLEN). Fertilizers applied were cattle manure, potassium sulphate (PS), PS + grinded horn, grinded horn (GH) and a control. Results of two-factorial field experiments (2002-2004) on a loamy sand are presented. Cultivar and fertilizer had a significant effect on final yield, combined mineral K and organic N (PSGH) being the most efficient fertilizer with regard to graded yields for crisp (>40 mm) and french fries production (>50 mm). K content of tubers could be increased, but dry matter was lowered by most fertilizers, so that only the unfertilized plots... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health Root crops Composting and manuring. |
| Ano: 2005 |
URL: http://orgprints.org/3830/1/3830.pdf |
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| Urbatzka, M Sc Peer; Graß, Dr. Rüdiger; Schüler, Dr. Christian; Trautz, Prof. Dieter; Heß, Prof. Jürgen. |
| In organic farming the cultivation of leguminous crops is one of the most important sources of nitrogen (N). However, regarding the amount of N fixed, there are hardly any published data for winter peas. Therefore, the N fixation of five regular leafed winter peas types and one semi-leafless spring pea cultivar in single and mixed cropping (with winter rye spring cereals respectively) was measured in four successive growing seasons (2003/04 – 2006/07) at the experimental farm of the University of Kassel and in two consecutive vegetation periods (2005/06 - 2006/07) at the experimental farm of the University of Applied Science in Osnabrueck. The amount of N fixed was calculated according to the extended difference method at the beginning of... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Crop combinations and interactions. |
| Ano: 2009 |
URL: http://orgprints.org/14383/1/Urbatzka_14383.pdf |
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