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| Henriksen, Christian Bugge; Rasmussen, Jesper; Mølgaard, Jens Peter. |
| Field experiments were conducted on sand and sandy loam from 2000-2002 to determine how timing of ridging affects potato tuber yield and quality depending on soil type and the use of catch crops. On sand, ridging in winter increased nitrogen availability in the 0-50 cm soil layer in spring by 19% from 5.7 to 6.8 mg N/kg soil compared with ridging in autumn (P<0.001) and by 8% from 6.3 to 6.8 mg N/kg soil compared with ploughing in spring (P<0.05). With a total and marketable yield of 27,9 t/ha and 14,2 t/ha respectively, ridging in winter resulted in higher tuber yield than both ridging in autumn and ridging in autumn combined with tilting and re-establishment of ridges in winter. These yield results were comparable to spring ploughing, but because... |
| Tipo: Journal paper |
Palavras-chave: Production systems; Root crops; Soil tillage. |
| Ano: 2005 |
URL: http://orgprints.org/4292/1/4292.pdf |
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| Brandt, Kirsten; Mølgaard, Jens Peter. |
| The possible differences between organic and conventional plant products are examined from the view of possible effects on human health. It is concluded that nutritionally important differences relating to contents of minerals, vitamins, protein and carbohydrates are not likely, primarily since neither of these are deficient in typical first world diets, nor are present levels of pesticide residues in conventional products cause for concern. However, there is reason to believe that contents of many defence related secondary metabolites in the diet are lower than optimal for human health, even for those where too high levels are known to be harmful. High biological activity resulting in adverse effects on growth of animals and children may be directly... |
| Tipo: Journal paper |
Palavras-chave: Food security; Food quality and human health. |
| Ano: 2001 |
URL: http://orgprints.org/116/1/organic_food.pdf |
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| Henriksen, Christian Bugge; Mølgaard, Jens Peter; Rasmussen, Jesper. |
| Autumn ridging is a modified version of the ridge tillage system. Instead of setting up ridges during the growing season, they are established in autumn and left for the winter. Previous studies have documented positive effects of autumn ridging on potato yield and we hypothesize that applying subsoiling could enhance these effects. To determine the effect of autumn ridging and inter-row subsoiling on potato yield and quality a field experiment was conducted on sandy soil from 2001-2003. Autumn ridging showed comparable yields to ploughing and significantly reduced the incidence of black scurf from 2.5% to 2.2%. Inter-row subsoiling in the growing season significantly increased marketable potato tuber yield from 84.4 hkg/ha to 96.3 hkg/ha and reduced the... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Root crops Soil tillage. |
| Ano: 2004 |
URL: http://orgprints.org/4290/1/4290.pdf |
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| Mølgaard, Jens Peter. |
| Organic plant production is characterised by a relatively low level of nutrient supply. Compared to conventional farming this leads to an earlier completion of vegetative growth and an earlier onset of maturity processes. Therefore, in general organic plant products are more mature than conventionally produced plant products. Organic animal production is based on the use of roughage, outdoor production and a lower growth rate compared to conventional farming. As an effect of these production system differences a number of differences in food quality is predictable and some of these have been documented in the literature. The review is based on existing literature and ongoing projects comparing nutrients, secondary metabolites and foreign compounds in... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health. |
| Ano: 2004 |
URL: http://orgprints.org/3997/1/3997_Jens_Peter_Molgaard.pdf |
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