Details
| Original language | English |
|---|---|
| Pages (from-to) | 125-142 |
| Number of pages | 18 |
| Journal | Biological Agriculture and Horticulture |
| Volume | 33 |
| Issue number | 2 |
| Early online date | 31 Jan 2017 |
| Publication status | Published - 2017 |
Abstract
Legumes represent an important N source in organic vegetable rotations. Since the amount of N2 fixed as well as N mineralisation from legume biomass are highly variable, N availability does often not match the requirements of following crops. The production of grain legume seeds followed by their temporary storage and application as N fertilizer may represent a flexible and controllable alternative to traditional legume green manures. In two field experiments, narrow-leaved lupine was investigated as N source for subsequent white cabbage and beetroot and was compared to two grass-clover treatments, in which cut herbage was either removed from the sward or remained as mulch. Symbiotic N2 fixation was highest for cut grass-clover, averaging about 350 kg ha−1. Mulching reduced N2 fixation by on average 57%. Lupine N2 fixation was largely comparable to that of mulched grass-clover swards. Net N mineralisation from grass-clover residues within the year of their incorporation was positively related to the percentage of clover (R2 = 0.93). Application of coarsely milled lupine seeds on plots previously cropped with lupines resulted in an N supply for cabbage being higher or equal to that after mulched grass-clover. Residual effects on the N supply for beetroot, grown in the third rotational year following white cabbage, averaged −2 and 28 kg N ha−1 for lupine and grass-clover, respectively. In conclusion, lupines may provide a highly flexible N source alternative to frequently mulched grass-clover swards. Further attention should be directed towards the utilization of cut forage legume herbage as mobile N source.
Keywords
- apparent net N mineralisation, grass-clover sward management, lupine seed meal, Lupinus angustifoliusL, symbiotic N fixation, vegetable crop rotation
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Agronomy and Crop Science
- Agricultural and Biological Sciences(all)
- Horticulture
Sustainable Development Goals
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In: Biological Agriculture and Horticulture, Vol. 33, No. 2, 2017, p. 125-142.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Narrow-leaved lupine as an N source alternative to grass-clover swards in organic vegetable rotations
AU - Katroschan, Kai Uwe
AU - Stützel, Hartmut
N1 - Publisher Copyright: © 2017 Informa UK Limited, trading as Taylor & Francis Group. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2017
Y1 - 2017
N2 - Legumes represent an important N source in organic vegetable rotations. Since the amount of N2 fixed as well as N mineralisation from legume biomass are highly variable, N availability does often not match the requirements of following crops. The production of grain legume seeds followed by their temporary storage and application as N fertilizer may represent a flexible and controllable alternative to traditional legume green manures. In two field experiments, narrow-leaved lupine was investigated as N source for subsequent white cabbage and beetroot and was compared to two grass-clover treatments, in which cut herbage was either removed from the sward or remained as mulch. Symbiotic N2 fixation was highest for cut grass-clover, averaging about 350 kg ha−1. Mulching reduced N2 fixation by on average 57%. Lupine N2 fixation was largely comparable to that of mulched grass-clover swards. Net N mineralisation from grass-clover residues within the year of their incorporation was positively related to the percentage of clover (R2 = 0.93). Application of coarsely milled lupine seeds on plots previously cropped with lupines resulted in an N supply for cabbage being higher or equal to that after mulched grass-clover. Residual effects on the N supply for beetroot, grown in the third rotational year following white cabbage, averaged −2 and 28 kg N ha−1 for lupine and grass-clover, respectively. In conclusion, lupines may provide a highly flexible N source alternative to frequently mulched grass-clover swards. Further attention should be directed towards the utilization of cut forage legume herbage as mobile N source.
AB - Legumes represent an important N source in organic vegetable rotations. Since the amount of N2 fixed as well as N mineralisation from legume biomass are highly variable, N availability does often not match the requirements of following crops. The production of grain legume seeds followed by their temporary storage and application as N fertilizer may represent a flexible and controllable alternative to traditional legume green manures. In two field experiments, narrow-leaved lupine was investigated as N source for subsequent white cabbage and beetroot and was compared to two grass-clover treatments, in which cut herbage was either removed from the sward or remained as mulch. Symbiotic N2 fixation was highest for cut grass-clover, averaging about 350 kg ha−1. Mulching reduced N2 fixation by on average 57%. Lupine N2 fixation was largely comparable to that of mulched grass-clover swards. Net N mineralisation from grass-clover residues within the year of their incorporation was positively related to the percentage of clover (R2 = 0.93). Application of coarsely milled lupine seeds on plots previously cropped with lupines resulted in an N supply for cabbage being higher or equal to that after mulched grass-clover. Residual effects on the N supply for beetroot, grown in the third rotational year following white cabbage, averaged −2 and 28 kg N ha−1 for lupine and grass-clover, respectively. In conclusion, lupines may provide a highly flexible N source alternative to frequently mulched grass-clover swards. Further attention should be directed towards the utilization of cut forage legume herbage as mobile N source.
KW - apparent net N mineralisation
KW - grass-clover sward management
KW - lupine seed meal
KW - Lupinus angustifoliusL
KW - symbiotic N fixation
KW - vegetable crop rotation
UR - http://www.scopus.com/inward/record.url?scp=85011303915&partnerID=8YFLogxK
U2 - 10.1080/01448765.2017.1285250
DO - 10.1080/01448765.2017.1285250
M3 - Article
AN - SCOPUS:85011303915
VL - 33
SP - 125
EP - 142
JO - Biological Agriculture and Horticulture
JF - Biological Agriculture and Horticulture
SN - 0144-8765
IS - 2
ER -