Abstract
Abstract This study was conducted to determine the effect of N fertilizer and irrigation management on potato ( Solanum tuberosum L.) tuber NO 3 ‐N levels and the relationship to the potential health hazard created by high nitrate levels in food products. ‘Russet Burbank’ potatoes grown using different N fertilizer rates, methods of application, and irrigation levels were analyzed for NO 3 ‐N concentration. The NO 3 ‐N concentration in the tubers on a wet weight basis varied from 36 to 131, 34 to 75, and 25 to 50 ppm in the 3 years of this study. The NO 3 ‐N concentration for each year of study was found to be directly related to the level of applied N fertilizer. The initial concentration and increase in NO 3 ‐N due to N fertilizer varied with the season. The addition of manure did not increase the NO 3 ‐N level above those to be expected from similar quantities of inorganic sources of N. Phosphorus fertilizer did not increase the NO 3 ‐N level. The NO 3 ‐N concentration in the tubers where more water was applied at each irrigation was less than on the lower level of applied water at each N rate. These data indicate that greater NO 3 ‐N levels in the tubers will result by increasing N fertilization rates. The levels of NO 3 ‐N obtained in this study were not expected to contribute substantially to the methemoglobinemia health hazard.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Potato tuber nitrate ranged 36–131, 34–75, and 25–50 ppm across three years.
- Taxon
- Potato
Solanum tuberosumt0 - Outcome
- NO 3 ‐N concentration in the tuberse0
- Value
- 36 to 131, 34 to 75, and 25 to 50 ppme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The NO 3 ‐N concentration in the tubers on a wet weight basis varied from 36 to 131, 34 to 75, and 25 to 50 ppm in the 3 years of this study.”
t0“Potato”
Claim · model-written summary
Tuber nitrate was directly related to applied N fertilizer each year.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- applied N fertilizere0
- Outcome
- NO 3 ‐N concentratione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The NO 3 ‐N concentration for each year of study was found to be directly related to the level of applied N fertilizer.”
t0“Potato”
Claim · model-written summary
Initial nitrate and fertilizer-related increase varied by season.
- Taxon
- PotatoSolanum tuberosumt0
- Outcome
- increase in NO 3 ‐Ne0
- Direction
- increasee0
- Setting
- seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The initial concentration and increase in NO 3 ‐N due to N fertilizer varied with the season.”
t0“Potato”
Claim · model-written summary
Manure did not increase nitrate beyond similar inorganic N quantities.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- manuree0
- Outcome
- NO 3 ‐N levele0
- Direction
- did not increasee0
- Comparator
- similar quantities of inorganic sources of Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of manure did not increase the NO 3 ‐N level above those to be expected from similar quantities of inorganic sources of N.”
t0“Potato”
Claim · model-written summary
Phosphorus fertilizer did not increase tuber nitrate.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- Phosphorus fertilizere0
- Outcome
- NO 3 ‐N levele0
- Direction
- did not increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus fertilizer did not increase the NO 3 ‐N level.”
t0“Potato”
Claim · model-written summary
More irrigation water lowered tuber nitrate at each N rate.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- more water was applied at each irrigatione0
- Outcome
- NO 3 ‐N concentration in the tuberse0
- Direction
- less thane0
- Comparator
- lower level of applied watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The NO 3 ‐N concentration in the tubers where more water was applied at each irrigation was less than on the lower level of applied water at each N rate.”
t0“Potato”
Claim · model-written summary
Studied tuber nitrate levels were not expected to substantially contribute to methemoglobinemia hazard.
- Taxon
- PotatoSolanum tuberosumt0
- Outcome
- levels of NO 3 ‐Ne0
- Qualifier
- not expected to contribute substantially to the methemoglobinemia health hazarde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The levels of NO 3 ‐N obtained in this study were not expected to contribute substantially to the methemoglobinemia health hazard.”
t0“Potato”
The same questions in other papers
irrigation · molecular: metabolites · Solanum tuberosum (potato)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
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.