Abstract
This study aimed on the increasing nitrogen use efficiency (NUE) of maize via the use of high temperature produced biochar (700 °C). Maize was grown to maturity on two contrasting soils (acidic Cambisol and neutral Chernozem) in pots with a treatment of biochar co-applied with ammonium sulphate stabilised by a nitrification inhibitor (3,4-dimethylpyrazole-phosphate, DMPP) or un-stabilised. The combination of biochar with ammonium sulphate containing DMPP increased maize biomass yield up to 14%, N uptake up to 34% and NUE up to 13.7% compared to the sole application of ammonium sulphate containing DMPP. However, the combination of biochar with un-stabilised ammonium sulphate (without DMPP) had a soil-specific influence and increased maize biomass only by 3.8%, N uptake by 27% and NUE by 11% only in acidic Cambisol. Further, the biochar was able to increase the uptake of phosphorus (P) and potassium (K) in both stabilised and un-stabilised treatments of ammonium sulphate. Generally, this study demonstrated a superior effect from the combined application of biochar with ammonium sulphate containing DMPP, which improved NUE, uptake of P, K and increased maize biomass yield. Such a combination may lead to higher efficiency of fertilisation practices and reduce the amount of N fertiliser to be applied.
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Claims 8
Claim · model-written summary
Biochar combined with DMPP-stabilised ammonium sulphate increased maize biomass yield by up to 14% compared with the sole stabilised fertiliser.
- Treatment
- combination of biochar with ammonium sulphate containing DMPPe1
- Outcome
- maize biomass yielde1
- Direction
- increasede1
- Value
- 14%e1
- Comparator
- the sole application of ammonium sulphate containing DMPPe1
- Setting
- in potse0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“improves nitrogen use efficiency in maize”
e0“Maize was grown to maturity on two contrasting soils (acidic Cambisol and neutral Chernozem) in pots with a treatment of biochar co-applied with ammonium sulphate stabilised by a nitrification inhibitor (3,4-dimethylpyrazole-phosphate, DMPP) or un-stabilised”
e1“The combination of biochar with ammonium sulphate containing DMPP increased maize biomass yield up to 14%, N uptake up to 34% and NUE up to 13.7% compared to the sole application of ammonium sulphate containing DMPP”
Claim · model-written summary
Biochar combined with DMPP-stabilised ammonium sulphate increased maize N uptake by up to 34% compared with the sole stabilised fertiliser.
- Treatment
- combination of biochar with ammonium sulphate containing DMPPe1
- Outcome
- N uptakee1
- Direction
- increasede1
- Value
- 34%e1
- Comparator
- the sole application of ammonium sulphate containing DMPPe1
- Setting
- in potse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“improves nitrogen use efficiency in maize”
e0“Maize was grown to maturity on two contrasting soils (acidic Cambisol and neutral Chernozem) in pots with a treatment of biochar co-applied with ammonium sulphate stabilised by a nitrification inhibitor (3,4-dimethylpyrazole-phosphate, DMPP) or un-stabilised”
e1“The combination of biochar with ammonium sulphate containing DMPP increased maize biomass yield up to 14%, N uptake up to 34% and NUE up to 13.7% compared to the sole application of ammonium sulphate containing DMPP”
Claim · model-written summary
Biochar combined with DMPP-stabilised ammonium sulphate increased nitrogen use efficiency by up to 13.7% compared with the sole stabilised fertiliser.
- Treatment
- combination of biochar with ammonium sulphate containing DMPPe1
- Outcome
- NUEe1
- Direction
- increasede1
- Value
- 13.7%e1
- Comparator
- the sole application of ammonium sulphate containing DMPPe1
- Setting
- in potse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“improves nitrogen use efficiency in maize”
e0“Maize was grown to maturity on two contrasting soils (acidic Cambisol and neutral Chernozem) in pots with a treatment of biochar co-applied with ammonium sulphate stabilised by a nitrification inhibitor (3,4-dimethylpyrazole-phosphate, DMPP) or un-stabilised”
e1“The combination of biochar with ammonium sulphate containing DMPP increased maize biomass yield up to 14%, N uptake up to 34% and NUE up to 13.7% compared to the sole application of ammonium sulphate containing DMPP”
Claim · model-written summary
Biochar combined with un-stabilised ammonium sulphate increased maize biomass by 3.8% in acidic Cambisol only.
- Treatment
- combination of biochar with un-stabilised ammonium sulphate (without DMPP)e2
- Outcome
- maize biomasse2
- Direction
- increasede2
- Value
- 3.8%e2
- Qualifier
- soil-specific influencee2
- Setting
- acidic Cambisole2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“improves nitrogen use efficiency in maize”
e2“However, the combination of biochar with un-stabilised ammonium sulphate (without DMPP) had a soil-specific influence and increased maize biomass only by 3.8%, N uptake by 27% and NUE by 11% only in acidic Cambisol”
Claim · model-written summary
Biochar combined with un-stabilised ammonium sulphate increased maize N uptake by 27% in acidic Cambisol only.
- Treatment
- combination of biochar with un-stabilised ammonium sulphate (without DMPP)e2
- Outcome
- N uptakee2
- Direction
- increasede2
- Value
- 27%e2
- Qualifier
- soil-specific influencee2
- Setting
- acidic Cambisole2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“improves nitrogen use efficiency in maize”
e2“However, the combination of biochar with un-stabilised ammonium sulphate (without DMPP) had a soil-specific influence and increased maize biomass only by 3.8%, N uptake by 27% and NUE by 11% only in acidic Cambisol”
Claim · model-written summary
Biochar combined with un-stabilised ammonium sulphate increased NUE by 11% in acidic Cambisol only.
- Treatment
- combination of biochar with un-stabilised ammonium sulphate (without DMPP)e2
- Outcome
- NUEe2
- Direction
- increasede2
- Value
- 11%e2
- Qualifier
- soil-specific influencee2
- Setting
- acidic Cambisole2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“improves nitrogen use efficiency in maize”
e2“However, the combination of biochar with un-stabilised ammonium sulphate (without DMPP) had a soil-specific influence and increased maize biomass only by 3.8%, N uptake by 27% and NUE by 11% only in acidic Cambisol”
Claim · model-written summary
Biochar increased the uptake of phosphorus and potassium in both stabilised and un-stabilised ammonium sulphate treatments.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“improves nitrogen use efficiency in maize”
e3“Further, the biochar was able to increase the uptake of phosphorus (P) and potassium (K) in both stabilised and un-stabilised treatments of ammonium sulphate”
Claim · model-written summary
The combination of biochar with DMPP-stabilised ammonium sulphate may lead to higher efficiency of fertilisation practices and allow less N fertiliser to be applied.
- Outcome
- efficiency of fertilisation practicese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“improves nitrogen use efficiency in maize”
e4“Such a combination may lead to higher efficiency of fertilisation practices and reduce the amount of N fertiliser to be applied”
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