Thorup-Kristensen, Kristian (2004) Ny lovende efterafgrøde. [New promising catch crop.] Økologisk Jordbrug, 2004, 24 (309), p. 10.
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Summary
Når efterafgrøder etableres ved undersåning i korn, er det i praksis stort set altid rajgræs der anvendes. Men forsøg med forskellige efterafgrøder har vist at der kan være store fordele ved at vælge andre arter, både i miljøeffekt, i eftervirkning og i andre forhold. Vi har derfor undersøgt en række plantearter udsået som undersåede efterafgrøder i vårbyg. Flere af arterne har vist lovende egenskaber, der er bl.a. identificeret arter med markant dybere rodvækst end vi opnår med rajgræs. Farvevajd, som er en lille korsblomstret plante har vist sig velegnet til undersåning. Den er meget lovende, da den kombinerer en meget dyb rodvækst med lavt C/N forhold i biomassen og dermed en bedre eftervirkning end de fleste andre efterafgrøder.
Summary translation
A number of plant species have been tested as undersown catch crops in spring cereals. The aim was to find alternatives to grasses as undersown catch crops, we looked especially for crops with deeper rooting. We identified a number of promising species, including chicory, sorrel and dyers woad, which all had rooting depths of 2 meters or more. Dyers woad seems to be the most promising with very deep rooting and fast N release for the succeeding crop. Rooting depth of ryegrass and white clover were both limited to the upper 1 meter of the soil.
| EPrint Type: | Newspaper or magazine article |
|---|---|
| Keywords: | catch crop; rooting depth; chicory; dyers woad; Nmin; nitrogen uptake; sorrel |
| Subjects: | Crop husbandry > Production systems |
| Research affiliation: | Denmark > DARCOF II (2000-2005) > I.10 (VegCatch) Organic vegetable cultivation methods and use of catch crops |
| Deposited By: | Thorup-Kristensen, Professor Kristian |
| ID Code: | 3885 |
| Deposited On: | 22 Oct 2004 |
| Last Modified: | 12 Apr 2010 07:30 |
| Document Language: | Danish/Dansk |
| Status: | Published |
| Refereed: | Not peer-reviewed |
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