Details
| Original language | English |
|---|---|
| Pages (from-to) | 237-251 |
| Number of pages | 15 |
| Journal | Plant and soil |
| Volume | 382 |
| Issue number | 1-2 |
| Publication status | Published - 29 May 2014 |
Abstract
Background and aims: The low N availability in organic cropping systems requires an efficient use of the limited N sources. The study aimed to analyze the N efficiency of organically fertilized white cabbage on a crop and crop rotation basis. Methods: Effects of soil-incorporated lupine seedlings and seed meal on the N use efficiency (NUE) and individual NUE components of cabbage were investigated in field experiments. Cabbage was followed by beetroot to quantify residual fertilizer effects. Results: Generally, NUE decreased with increasing N availability. Nitrogen uptake efficiency, however, was low at low N supply and increased curvilinearly to an asymptotic maximum. Variation in harvest index between and within experimental years was explained by differences in thermal growing time and initial cabbage growth, respectively. The increase in beetroot N supply by fertilizer treatments averaged 18 % of applied lupine seed N corresponding to 63 % of the incremental N in cabbage residues. Conclusions: Dry matter partitioning alters during cabbage yield formation in favor of the harvest residue fraction if abiotic stress like water shortage occurs directly after crop establishment, being associated with reduced NUE. The residual effect depends largely on the re-utilization of incremental fertilizer N in cabbage residues and thus on the short-term net N mineralization of organic fertilizers.
Keywords
- Brassica oleracea convar. capitata, Harvest index, N uptake efficiency, N use efficiency components, Organic fertilizer, residual N effect
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Soil Science
- Agricultural and Biological Sciences(all)
- Plant Science
Sustainable Development Goals
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In: Plant and soil, Vol. 382, No. 1-2, 29.05.2014, p. 237-251.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Nitrogen use efficiency of organically fertilized white cabbage and residual effects on subsequent beetroot
AU - Katroschan, Kai Uwe
AU - Uptmoor, Ralf
AU - Stützel, Hartmut
PY - 2014/5/29
Y1 - 2014/5/29
N2 - Background and aims: The low N availability in organic cropping systems requires an efficient use of the limited N sources. The study aimed to analyze the N efficiency of organically fertilized white cabbage on a crop and crop rotation basis. Methods: Effects of soil-incorporated lupine seedlings and seed meal on the N use efficiency (NUE) and individual NUE components of cabbage were investigated in field experiments. Cabbage was followed by beetroot to quantify residual fertilizer effects. Results: Generally, NUE decreased with increasing N availability. Nitrogen uptake efficiency, however, was low at low N supply and increased curvilinearly to an asymptotic maximum. Variation in harvest index between and within experimental years was explained by differences in thermal growing time and initial cabbage growth, respectively. The increase in beetroot N supply by fertilizer treatments averaged 18 % of applied lupine seed N corresponding to 63 % of the incremental N in cabbage residues. Conclusions: Dry matter partitioning alters during cabbage yield formation in favor of the harvest residue fraction if abiotic stress like water shortage occurs directly after crop establishment, being associated with reduced NUE. The residual effect depends largely on the re-utilization of incremental fertilizer N in cabbage residues and thus on the short-term net N mineralization of organic fertilizers.
AB - Background and aims: The low N availability in organic cropping systems requires an efficient use of the limited N sources. The study aimed to analyze the N efficiency of organically fertilized white cabbage on a crop and crop rotation basis. Methods: Effects of soil-incorporated lupine seedlings and seed meal on the N use efficiency (NUE) and individual NUE components of cabbage were investigated in field experiments. Cabbage was followed by beetroot to quantify residual fertilizer effects. Results: Generally, NUE decreased with increasing N availability. Nitrogen uptake efficiency, however, was low at low N supply and increased curvilinearly to an asymptotic maximum. Variation in harvest index between and within experimental years was explained by differences in thermal growing time and initial cabbage growth, respectively. The increase in beetroot N supply by fertilizer treatments averaged 18 % of applied lupine seed N corresponding to 63 % of the incremental N in cabbage residues. Conclusions: Dry matter partitioning alters during cabbage yield formation in favor of the harvest residue fraction if abiotic stress like water shortage occurs directly after crop establishment, being associated with reduced NUE. The residual effect depends largely on the re-utilization of incremental fertilizer N in cabbage residues and thus on the short-term net N mineralization of organic fertilizers.
KW - Brassica oleracea convar. capitata
KW - Harvest index
KW - N uptake efficiency
KW - N use efficiency components
KW - Organic fertilizer
KW - residual N effect
UR - http://www.scopus.com/inward/record.url?scp=84906942859&partnerID=8YFLogxK
U2 - 10.1007/s11104-014-2133-6
DO - 10.1007/s11104-014-2133-6
M3 - Article
AN - SCOPUS:84906942859
VL - 382
SP - 237
EP - 251
JO - Plant and soil
JF - Plant and soil
SN - 0032-079X
IS - 1-2
ER -