Abstract
In the extremely dry year of 2000 three variants of the static long-term experiment were selected: (1) unfertilized, (2) N [60 kg ha v m v 1 ] PK v + v animal manure and (3) N [120 kg ha v m v 1 ] PK v + v manure v + v clay. Micro plots were adjusted in the experimental plots. 15 N-addition was fertilized at 0, 60 and 120 kg ha v m v 1 N in each field plot annually. Half of the ammoniumsulphate was formulated with the nitrification inhibitor Dimethylpyrazoliumdihydrogenphosphate. Throughout the vegetation of winter rye, soil was sampled and intermediate crops were taken up at two-week intervals. After the harvest of the main crop, Perko was replanted. The nitrification delay of the DMPP-treatments was minimal. In comparison, the apparent 15 N-immobilization was in parts very high. In contrast to the standard doses of 120 kg ha v m v 1 N, there was a significant reduction in yields in the variants with 50 per cent N doses. At the 120 kg ha v m v 1 N rate of application the use of inhibitor obtained significant additional yields. With increasing soil quality the soil-borne N-uptake of the harvest mass in both fertilizing doses was raised.
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Claims 5
Claim · model-written summary
DMPP treatments minimally delayed nitrification.
- Taxon
- winter rye
Secale cerealet1 - Treatment
- DMPP-treatmentse0
- Outcome
- nitrification delaye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The nitrification delay of the DMPP-treatments was minimal”
t0“nitrogen”
t1“winter rye”
Claim · model-written summary
Apparent 15 N immobilization was in parts very high.
- Taxon
- winter ryeSecale cerealet1
- Outcome
- apparent 15 N-immobilizatione0
- Direction
- very highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the apparent 15 N-immobilization was in parts very high”
t0“nitrogen”
t1“winter rye”
Claim · model-written summary
Half N doses significantly reduced yield relative to the standard 120 kg rate.
- Taxon
- winter ryeSecale cerealet1
- Treatment
- 50 per cent N dosese0
- Outcome
- yieldse0
- Direction
- reductione0
- Comparator
- standard doses of 120 kg ha v m v 1 Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In contrast to the standard doses of 120 kg ha v m v 1 N, there was a significant reduction in yields in the variants with 50 per cent N doses”
t0“nitrogen”
t1“winter rye”
Claim · model-written summary
At 120 kg N, inhibitor use significantly increased yield.
- Taxon
- winter ryeSecale cerealet1
- Treatment
- use of inhibitore0
- Outcome
- yieldse0
- Direction
- additionale0
- Qualifier
- 120 kg ha v m v 1 Ne0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the 120 kg ha v m v 1 N rate of application the use of inhibitor obtained significant additional yields”
t0“nitrogen”
t1“winter rye”
Claim · model-written summary
Soil borne N uptake of harvest mass rose as soil quality increased at both fertilizer doses.
- Taxon
- winter ryeSecale cerealet1
- Outcome
- soil-borne N-uptake of the harvest masse0
- Direction
- raisede0
- Qualifier
- both fertilizing dosese0
- Setting
- soil qualitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With increasing soil quality the soil-borne N-uptake of the harvest mass in both fertilizing doses was raised”
t0“nitrogen”
t1“winter rye”
The same questions in other papers
nitrogen · yield · Secale cereale (rye)Positive and negative results
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- positive
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See all 28 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.