Abstract
Knowledge of the mineralisation and nutrient release of organic fertilisers is essential to ensure plant nutrient demand and availability, to increase N use efficiency and to minimise environmental risks. In 2018–2020, two similar field experiments were carried out on clay loam Cambisol with winter wheat (Triticum aestivum L.) grown without N application and applying liquid anaerobic digestate (LD), pig slurry (PS) and ammonium nitrate (AN) fertilizer with and without additional fertilization (N120 and N120+50). The aim of the research was to compare the effect of organic and mineral fertilizers on the variation of soil mineral nitrogen forms in the 0–30, 30–60 cm soil layers and N accumulation in wheat yield. Fertilizers applied during the previous growing season increased the nitrate and ammonium nitrogen (N-NO3 and N-NH4) content after the resumption of winter wheat vegetation. The dry period in spring (2019) had a negative impact on winter wheat N uptake. In a year of normal moisture content (2020), PS and LD fertilizers and the fertilizer application of the previous year (2019) significantly increased the N-NO3 content in the topsoil, while all applied fertilizers increased it in the deeper soil layer (by a factor of between 3.6 and 12.3), compared to unfertilized soil.
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Claims 6
Claim · model-written summary
Previous-season fertilizer increased soil nitrate and ammonium after winter wheat growth resumed.
- Taxon
- winter wheat
Triticum aestivume0 - Treatment
- Fertilizers applied during the previous growing seasone0
- Outcome
- nitrate and ammonium nitrogen (N-NO3 and N-NH4) contente0
- Direction
- increasede0
- Qualifier
- after the resumption of winter wheat vegetatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilizers applied during the previous growing season increased the nitrate and ammonium nitrogen (N-NO3 and N-NH4) content after the resumption of winter wheat vegetation”
Claim · model-written summary
Dry spring conditions in 2019 reduced winter wheat nitrogen uptake.
- Taxon
- winter wheatTriticum aestivume0
- Outcome
- winter wheat N uptakee0
- Direction
- negative impacte0
- Qualifier
- dry period in spring (2019)e0
- Setting
- spring (2019)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dry period in spring (2019) had a negative impact on winter wheat N uptake”
Claim · model-written summary
Pig slurry significantly increased topsoil nitrate in 2020.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- PSe0
- Outcome
- N-NO3 content in the topsoile0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In a year of normal moisture content (2020), PS and LD fertilizers and the fertilizer application of the previous year (2019) significantly increased the N-NO3 content in the topsoil”
t0“Winter Wheat”
Claim · model-written summary
Liquid digestate significantly increased topsoil nitrate in 2020.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- LD fertilizerse0
- Outcome
- N-NO3 content in the topsoile0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In a year of normal moisture content (2020), PS and LD fertilizers and the fertilizer application of the previous year (2019) significantly increased the N-NO3 content in the topsoil”
t0“Winter Wheat”
Claim · model-written summary
Previous-year fertilizer significantly increased topsoil nitrate in 2020.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- fertilizer application of the previous year (2019)e0
- Outcome
- N-NO3 content in the topsoile0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In a year of normal moisture content (2020), PS and LD fertilizers and the fertilizer application of the previous year (2019) significantly increased the N-NO3 content in the topsoil”
t0“Winter Wheat”
Claim · model-written summary
All applied fertilizers increased deeper-layer soil nitrate by a factor of 3.6 to 12.3 versus unfertilized soil.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- all applied fertilizerse0
- Outcome
- deeper soil layere0
- Direction
- increasede0
- Value
- a factor of between 3.6 and 12.3e0
- Comparator
- unfertilized soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all applied fertilizers increased it in the deeper soil layer (by a factor of between 3.6 and 12.3), compared to unfertilized soil”
t0“Winter Wheat”
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