Abstract
The monitoring was carried on in the years 1996-2000 in the international IOSDV (Internationale Ökologische Stickstoff Dauer Versuche) field trial running since 1983 in Lukavec, Pelhřimov district. In the given locality, there are low fertility sandy-loamy cambisoils, long-term average annual rainfall 653 mm, average annual temperature 7°C, altitude 620 m. In the field trials there were introduced different organic fertilizations and graduate N-doses. According to the complex diffusion analysis, statistically significant for the yields of winter wheat after potatoes was the impact of N fertilization, years, and double interactions, with the exception of different organic fertilization. The N doses up to 120 kg.ha-1 after potatoes proved to be optimal from the viewpoint of winter wheat yields and quality. The situation was similar for winter barley. The results of diffusion analysis for individual years were analogical also in straw yields of both cereals. The highest N dose to potatoes (200 kg.ha-1) resulted in the highest tuber yields, but the starch content was significantly lower. Graduated N doses increased in cereals the numbers of ears per m2, but the mass of 1000 grains mostly decreased. In addition, N content in grain and straw increased with N doses, while pH annually decreased by 0.1 to 0.4. On plots without organic fertilization the N-balance was equilibrated with the annual application of 120 kg N.ha-1 with straw embedding after cereals at 90 kg N.ha-1 and on plots with stall dung to potatoes already at 70 kg N.ha-1. On plots without N fertilization, the balance was passive also in P and K on plots without organic fertilization. A balance surplus was obtained already with the annual application of 15 kg P.ha-1 and 83 kg K.ha-1 and organic fertilization. With the annual fertilization with 22 kg P.ha-1 and 83 kg K.ha-1 and stall dung (30 t.ha-1) once every three years the P and K content increased annually by 1 to 3 mg.kg-1 of soil. Maximum levels of crop growing profitability were obtained with those doses of fertilizers with which also an equilibrated balance of nutrients was obtained.
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Claims 17
Claim · model-written summary
N fertilization had a statistically significant impact on winter wheat yields after potatoes.
- Taxon
- winter wheat
Triticum aestivume1 - Treatment
- N fertilizatione1
- Outcome
- yieldse1
- Setting
- Lukavece0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“field trial running since 1983 in Lukavec”
e1“According to the complex diffusion analysis, statistically significant for the yields of winter wheat after potatoes was the impact of N fertilization, years, and double interactions, with the exception of different organic fertilization”
Claim · model-written summary
Different organic fertilization had no significant impact on winter wheat yields after potatoes.
- Taxon
- winter wheatTriticum aestivume1
- Treatment
- different organic fertilizatione1
- Outcome
- yieldse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“According to the complex diffusion analysis, statistically significant for the yields of winter wheat after potatoes was the impact of N fertilization, years, and double interactions, with the exception of different organic fertilization”
Claim · model-written summary
N doses up to 120 kg.ha-1 after potatoes were optimal for winter wheat yields and quality.
- Taxon
- winter wheatTriticum aestivume2
- Treatment
- N doses up to 120 kg.ha-1e2
- Outcome
- yields and qualitye2
- Direction
- optimale2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The N doses up to 120 kg.ha-1 after potatoes proved to be optimal from the viewpoint of winter wheat yields and quality”
Claim · model-written summary
The situation was similar for winter barley: N doses up to 120 kg.ha-1 were optimal for yields and quality.
- Taxon
- winter barley
.jpg?width=60)
Hordeum vulgaree3 - Treatment
- N dosese2
- Outcome
- yields and qualitye2
- Direction
- similare3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e2“The N doses up to 120 kg.ha-1 after potatoes proved to be optimal from the viewpoint of winter wheat yields and quality”
e3“The situation was similar for winter barley”
Claim · model-written summary
Straw yields of both cereals showed analogical results across individual years.
Verbatim
e4“The results of diffusion analysis for individual years were analogical also in straw yields of both cereals”
Claim · model-written summary
The highest N dose to potatoes (200 kg.ha-1) gave the highest tuber yields.
- Taxon
- potatoes
Solanum tuberosume5 - Treatment
- The highest N dose to potatoes (200 kg.ha-1)e5
- Outcome
- tuber yieldse5
- Direction
- higheste5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The highest N dose to potatoes (200 kg.ha-1) resulted in the highest tuber yields”
Claim · model-written summary
The highest N dose to potatoes (200 kg.ha-1) significantly lowered starch content.
- Taxon
- potatoesSolanum tuberosume6
- Treatment
- highest N dose to potatoes (200 kg.ha-1)e6
- Outcome
- starch contente6
- Direction
- lowere6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The highest N dose to potatoes (200 kg.ha-1) resulted in the highest tuber yields, but the starch content was significantly lower”
Claim · model-written summary
Graduated N doses increased the number of ears per m2 in cereals.
Not reportedComparator
Verbatim
e7“Graduated N doses increased in cereals the numbers of ears per m2, but the mass of 1000 grains mostly decreased”
Claim · model-written summary
Graduated N doses mostly decreased the mass of 1000 grains in cereals.
- Taxon
- cerealse7
- Treatment
- Graduated N dosese7
- Outcome
- the mass of 1000 grainse7
- Direction
- mostly decreasede7
Not reportedComparator
Verbatim
e7“Graduated N doses increased in cereals the numbers of ears per m2, but the mass of 1000 grains mostly decreased”
Claim · model-written summary
N content in grain and straw increased with N doses.
Not reportedComparator
Verbatim
e7“Graduated N doses increased in cereals the numbers of ears per m2, but the mass of 1000 grains mostly decreased”
e6“In addition, N content in grain and straw increased with N doses, while pH annually decreased by 0.1 to 0.4”
Claim · model-written summary
Soil pH decreased annually by 0.1 to 0.4 under the N doses tested.
Not reportedTaxon
Verbatim
e0“In addition, N content in grain and straw increased with N doses, while pH annually decreased by 0.1 to 0.4”
Claim · model-written summary
Without organic fertilization, the N balance was equilibrated with an annual application of 120 kg N.ha-1.
Not reportedTaxon
Verbatim
e0“On plots without organic fertilization the N-balance was equilibrated with the annual application of 120 kg N.ha-1”
Claim · model-written summary
With stall dung to potatoes at 70 kg N.ha-1, the N balance was equilibrated.
- Taxon
- potatoesSolanum tuberosume1
- Treatment
- stall dung to potatoes already at 70 kg N.ha-1e1
- Outcome
- N-balancee0
- Direction
- equilibratede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On plots without organic fertilization the N-balance was equilibrated with the annual application of 120 kg N.ha-1”
e1“on plots with stall dung to potatoes already at 70 kg N.ha-1”
Claim · model-written summary
Without N fertilization, the P and K balance was passive on plots without organic fertilization.
Not reportedTaxon
Verbatim
e0“On plots without N fertilization, the balance was passive also in P and K on plots without organic fertilization”
Claim · model-written summary
A balance surplus was obtained with 15 kg P.ha-1 and 83 kg K.ha-1 per year together with organic fertilization.
Not reportedTaxon
Verbatim
e0“A balance surplus was obtained already with the annual application of 15 kg P.ha-1 and 83 kg K.ha-1 and organic fertilization”
Claim · model-written summary
P and K content in soil increased annually by 1 to 3 mg.kg-1 with stall dung applied every three years.
- Treatment
- annual fertilization with 22 kg P.ha-1 and 83 kg K.ha-1 and stall dung (30 t.ha-1) once every three yearse0
- Outcome
- P and K contente0
- Direction
- increasede0
- Value
- 1 to 3 mg.kg-1e0
Not reportedTaxonComparator
Verbatim
e0“With the annual fertilization with 22 kg P.ha-1 and 83 kg K.ha-1 and stall dung (30 t.ha-1) once every three years the P and K content increased annually by 1 to 3 mg.kg-1 of soil”
Claim · model-written summary
Maximum crop growing profitability was reached with fertilizer doses that also gave an equilibrated nutrient balance.
- Outcome
- crop growing profitabilitye0
- Direction
- Maximum levelse0
- Qualifier
- equilibrated balance of nutrientse0
Not reportedTaxon
Verbatim
e0“Maximum levels of crop growing profitability were obtained with those doses of fertilizers with which also an equilibrated balance of nutrients was obtained”
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