Abstract
The improvement of nitrogen use efficiency (NUE) in potato (Solanum tuberosum L.) can reduce the required N input.As a result, economic benefits will increase, and environmental pollution will decrease due to N loss.The aim of the study was to determine the NUE of potato genotypes and to evaluate the relationship of NUE with the tuber yield, starch yield, and starch content at different N fertiliser rates.During a two-year experiment, the performance of 19 potato genotypes was evaluated by different farming practices involving the varying levels of N fertiliser rates.These practices included the integrated farming (IF) system with three different N fertiliser rates and the organic farming (OF) system without N fertilisation.The N fertilisation in both farming systems was stated as plant-available N in soil and as N added with a fertiliser.A significant effect of the genotype and the farming system on the tested traits was determined.The potato genotype tuber yield correlation with NUE was high or moderate in the farming system with different N fertiliser rates in both years.The tuber yield of potato grown in the farming system with a comparatively higher N fertilisation usually did not increase significantly; therefore, a decrease in genotype NUE was detected.The correlation between starch yield and NUE was high and strong in both farming systems, although high and moderately strong correlation was determined between tuber yield and starch yield.NUE had a weak correlation with the starch content in potato tubers, so genotype characteristics and growing conditions had the greatest influence on this trait.An increase in N fertilisation did not lead to an increase in starch yield due to a decrease in starch content and a slight insignificant increase in tuber yield.However, genotypes with higher NUE produced a higher tuber yield and starch yield than genotypes with relatively lower NUE, even in the farming systems with different N fertiliser rates in both experimental years.
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Claims 14
Claim · model-written summary
Genotype significantly affected tested potato traits.
- Taxon
- potato
Solanum tuberosumt0 - Material
- genotypee0
- Outcome
- tested traitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant effect of the genotype and the farming system on the tested traits was determined.”
t0“potato”
Claim · model-written summary
Farming system significantly affected tested potato traits.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- farming systeme0
- Outcome
- tested traitse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant effect of the genotype and the farming system on the tested traits was determined.”
t0“potato”
Claim · model-written summary
Potato tuber yield correlated highly or moderately with nitrogen use efficiency across fertiliser rates in both years.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- different N fertiliser ratese0
- Outcome
- tuber yield correlation with NUEe0
- Qualifier
- in both yearse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The potato genotype tuber yield correlation with NUE was high or moderate in the farming system with different N fertiliser rates in both years.”
Claim · model-written summary
Higher nitrogen fertilisation usually did not significantly increase tuber yield.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- higher N fertilisatione0
- Outcome
- tuber yielde0
- Direction
- did not increasee0
- Qualifier
- usuallye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tuber yield of potato grown in the farming system with a comparatively higher N fertilisation usually did not increase significantly”
Claim · model-written summary
Higher nitrogen fertilisation decreased genotype nitrogen use efficiency.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- higher N fertilisatione0
- Outcome
- genotype NUEe0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tuber yield of potato grown in the farming system with a comparatively higher N fertilisation usually did not increase significantly; therefore, a decrease in genotype NUE was detected”
t0“potato”
Claim · model-written summary
Starch yield and nitrogen use efficiency had a high, strong correlation in both farming systems.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- correlation between starch yield and NUEe0
- Setting
- both farming systemse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The correlation between starch yield and NUE was high and strong in both farming systems”
t0“potato”
Claim · model-written summary
Tuber yield and starch yield had a high, moderately strong correlation.
- Taxon
- potatoSolanum tuberosumt0
- Organ / stage
- tubere0
- Outcome
- correlation was determined between tuber yield and starch yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high and moderately strong correlation was determined between tuber yield and starch yield”
t0“potato”
Claim · model-written summary
Nitrogen use efficiency correlated weakly with potato tuber starch content.
- Taxon
- potatoSolanum tuberosume0
- Organ / stage
- tuberse0
- Outcome
- starch contente0
- Qualifier
- weak correlatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NUE had a weak correlation with the starch content in potato tubers”
Claim · model-written summary
Genotype characteristics and growing conditions most strongly influenced potato tuber starch content.
- Taxon
- potatoSolanum tuberosumt0
- Material
- genotypee0
- Outcome
- starch contente0
- Qualifier
- growing conditionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NUE had a weak correlation with the starch content in potato tubers, so genotype characteristics and growing conditions had the greatest influence on this trait”
t0“potato”
Claim · model-written summary
Increasing nitrogen fertilisation did not increase starch yield.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- increase in N fertilisatione0
- Outcome
- starch yielde0
- Direction
- did not lead to an increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An increase in N fertilisation did not lead to an increase in starch yield”
t0“potato”
Claim · model-written summary
Increasing nitrogen fertilisation decreased starch content.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- N fertilisatione0
- Outcome
- starch contente0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An increase in N fertilisation did not lead to an increase in starch yield due to a decrease in starch content and a slight insignificant increase in tuber yield”
t0“potato”
Claim · model-written summary
Increasing nitrogen fertilisation produced a slight nonsignificant increase in tuber yield.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- N fertilisatione0
- Outcome
- tuber yielde0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An increase in N fertilisation did not lead to an increase in starch yield due to a decrease in starch content and a slight insignificant increase in tuber yield”
t0“potato”
Claim · model-written summary
Higher NUE genotypes had higher tuber yield than lower NUE genotypes across fertiliser systems and years.
- Taxon
- potatoSolanum tuberosumt0
- Material
- genotypes with higher NUEe0
- Outcome
- tuber yielde0
- Direction
- highere0
- Comparator
- genotypes with relatively lower NUEe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genotypes with higher NUE produced a higher tuber yield and starch yield than genotypes with relatively lower NUE, even in the farming systems with different N fertiliser rates in both experimental years”
t0“potato”
Claim · model-written summary
Higher NUE genotypes had higher starch yield than lower NUE genotypes across fertiliser systems and years.
- Taxon
- potatoSolanum tuberosumt0
- Material
- genotypes with higher NUEe0
- Outcome
- starch yielde0
- Direction
- highere0
- Comparator
- genotypes with relatively lower NUEe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genotypes with higher NUE produced a higher tuber yield and starch yield than genotypes with relatively lower NUE, even in the farming systems with different N fertiliser rates in both experimental years”
t0“potato”
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