Abstract
In Central Slovenia within a long term static experiment IOSDV we investigated the impact of mineral nitrogen (N) fertilisation (0, 65, 130, 195 kg/ha) on the N content and the N amount in winter wheat (larger roots, stems, spikes and leaves) in EC 81/82 and EC 90/91, employing three systems of management: farmyard manure ploughing in before forecrop maize, straw ploughing in and green manure, no organic fertilisation. At EC 81/82 the N content in larger roots was around twice as high as the N content in stems and around twice as low as the N content in spikes and leaves. There was 80% of the whole N amount in plant located in the spikes and leaves (33-168 kg/ha) in EC 81/82 and 90% in EC 90/91. Calculated N recovery from mineral fertiliser was 68-87%; it increased with the increasing N rates in the system with farmyard manure ploughing in and in the system with no organic fertilisation, but not in the system with straw ploughing in and green manure. Between EC 81/82 and EC 90/91 wheat gained from 4 to 34 kg N/ha, but there were more important translocations of N inside the plants, which were higher at higher mineral N rates. There was a significant impact of management system on the N uptake at the highest mineral N rate.
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Claims 11
Claim · model-written summary
Root nitrogen content was about twice stem nitrogen content at EC 81/82.
- Taxon
- wheat
Triticum aestivumt0 - Organ / stage
- larger rootse0
- Outcome
- N content in larger rootse0
- Direction
- twice as highe0
- Value
- around twicee0
- Comparator
- stemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At EC 81/82 the N content in larger roots was around twice as high as the N content in stems”
t0“wheat plant”
Claim · model-written summary
Root nitrogen content was about half that in spikes and leaves.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- spikes and leavese0
- Outcome
- N content in spikes and leavese0
- Direction
- twice as lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“around twice as low as the N content in spikes and leaves”
t0“wheat plant”
Claim · model-written summary
Spikes and leaves held 80% of plant nitrogen at EC 81/82.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- spikes and leavese0
- Outcome
- whole N amount in plant located in the spikes and leavese0
- Value
- 80%e0
- Qualifier
- EC 81/82e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“80% of the whole N amount in plant located in the spikes and leaves (33-168 kg/ha) in EC 81/82”
t0“wheat plant”
Claim · model-written summary
Spikes and leaves held 90% of plant nitrogen at EC 90/91.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- whole N amount in plant located in the spikes and leavese1
- Value
- 90%e0
- Qualifier
- EC 90/91e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“90% in EC 90/91”
t0“wheat plant”
e1“whole N amount in plant located in the spikes and leaves”
Claim · model-written summary
Calculated nitrogen recovery from mineral fertilizer was 68–87%.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- N recovery from mineral fertilisere0
- Value
- 68-87%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Calculated N recovery from mineral fertiliser was 68-87%”
t0“wheat plant”
Claim · model-written summary
Nitrogen recovery rose with rate under farmyard manure.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- increasing N ratese0
- Outcome
- N recovery from mineral fertilisere1
- Direction
- increasede0
- Qualifier
- farmyard manure ploughing ine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it increased with the increasing N rates in the system with farmyard manure ploughing in”
t0“wheat plant”
e1“N recovery from mineral fertiliser”
Claim · model-written summary
Nitrogen recovery rose with rate without organic fertilization.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- no organic fertilisatione0
- Outcome
- N recovery from mineral fertilisere2
- Direction
- increasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the system with no organic fertilisation”
t0“wheat plant”
e1“it increased with the increasing N rates”
e2“N recovery from mineral fertiliser”
Claim · model-written summary
Nitrogen recovery did not increase with rate under straw and green manure.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- straw ploughing in and green manuree0
- Outcome
- N recovery from mineral fertilisere1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but not in the system with straw ploughing in and green manure”
t0“wheat plant”
e1“N recovery from mineral fertiliser”
Claim · model-written summary
Wheat gained 4 to 34 kg N/ha between EC 81/82 and EC 90/91.
- Taxon
- wheatTriticum aestivume0
- Outcome
- Ne0
- Direction
- gainede0
- Value
- 4 to 34 kg N/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Between EC 81/82 and EC 90/91 wheat gained from 4 to 34 kg N/ha”
Claim · model-written summary
Internal nitrogen translocation was greater at higher nitrogen rates.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- higher mineral N ratese0
- Outcome
- translocations of N inside the plantse0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“translocations of N inside the plants, which were higher at higher mineral N rates”
t0“wheat plant”
Claim · model-written summary
Management significantly affected nitrogen uptake at the highest rate.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- management systeme0
- Outcome
- N uptakee0
- Qualifier
- highest mineral N ratee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant impact of management system on the N uptake at the highest mineral N rate”
t0“wheat plant”