Abstract
Abstract Seasonal dynamics of total soil nitrogen, ammonium and nitrate ions contents were evaluated for a processing potato field experiment conducted on three sites with different altitudes. Fertilization levels of 100 and 200 kg N ha−1 applied before potato crop planting were compared. Content of soil ammonium and nitrate ions ranged from 1.5 to 149 mg kg−1 and from 3.0 to 108 mg kg−1 on soil dry matter basis, respectively and showed strong seasonal dynamics with a rapid increase of the content during June and subsequent fall down to initial values. The nitrogen fertilization level had minimal effect on seasonal dynamic of total soil nitrogen, ammonium and nitrate ions contents. The higher fertilization level significantly increased crude protein content in potato tubers and yield of crude protein per area unit. The factors of starch content in potato tubers and yield per area unit were affected negatively by the higher dose of nitrogen fertilization. It could be concluded that the dose of 100 kg N ha−1 is sufficient for production of potato tubers with high content of both crude protein and starch, especially in production areas with higher altitude. The dose of 200 N is justifiable only in production areas with lower altitude (below 400 m a.s.l.) that are not so suitable for accumulation of crude protein and starch in potato tubers.
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 8
Claim · model-written summary
Soil ammonium ranged from 1.5 to 149 mg kg−1 with seasonal dynamics in the processing potato field.
- Taxon
- potato
Solanum tuberosume5 - Outcome
- soil ammoniume1
- Value
- 1.5 to 149 mg kg−1e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Content of soil ammonium and nitrate ions ranged from 1.5 to 149 mg kg−1 and from 3.0 to 108 mg kg−1 on soil dry matter basis, respectively”
e5“Fertilization levels of 100 and 200 kg N ha−1 applied before potato crop planting were compared”
Claim · model-written summary
Soil nitrate ranged from 3.0 to 108 mg kg−1 with seasonal dynamics in the processing potato field.
- Taxon
- potatoSolanum tuberosume5
- Outcome
- nitrate ionse1
- Value
- 3.0 to 108 mg kg−1e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Content of soil ammonium and nitrate ions ranged from 1.5 to 149 mg kg−1 and from 3.0 to 108 mg kg−1 on soil dry matter basis, respectively”
e5“Fertilization levels of 100 and 200 kg N ha−1 applied before potato crop planting were compared”
Claim · model-written summary
Soil ammonium and nitrate ion content increased rapidly during June and then fell back to initial values.
- Taxon
- potatoSolanum tuberosume5
- Outcome
- Content of soil ammonium and nitrate ionse1
- Direction
- increasee2
- Comparator
- initial valuese2
- Setting
- during Junee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Content of soil ammonium and nitrate ions ranged from 1.5 to 149 mg kg−1 and from 3.0 to 108 mg kg−1 on soil dry matter basis, respectively”
e2“showed strong seasonal dynamics with a rapid increase of the content during June and subsequent fall down to initial values”
e5“Fertilization levels of 100 and 200 kg N ha−1 applied before potato crop planting were compared”
Claim · model-written summary
The nitrogen fertilization level had minimal effect on the seasonal dynamics of total soil nitrogen.
- Taxon
- potatoSolanum tuberosume5
- Treatment
- nitrogen fertilization levele3
- Outcome
- seasonal dynamic of total soil nitrogene3
- Direction
- no_changeinferrede3
- Qualifier
- minimal effecte3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The nitrogen fertilization level had minimal effect on seasonal dynamic of total soil nitrogen, ammonium and nitrate ions contents”
e5“Fertilization levels of 100 and 200 kg N ha−1 applied before potato crop planting were compared”
Claim · model-written summary
The higher N fertilization level significantly increased crude protein content and crude protein yield per area in potato tubers.
- Taxon
- potatoSolanum tuberosume4
- Treatment
- higher fertilization levele4
- Outcome
- crude protein content in potato tubers and yield of crude protein per area unite4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The higher fertilization level significantly increased crude protein content in potato tubers and yield of crude protein per area unit”
Claim · model-written summary
The higher N fertilization dose decreased starch content and yield per area in potato tubers.
- Taxon
- potatoSolanum tuberosume6
- Treatment
- higher dose of nitrogen fertilizatione6
- Outcome
- starch content in potato tubers and yield per area unite6
- Direction
- decreaseinferrede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The factors of starch content in potato tubers and yield per area unit were affected negatively by the higher dose of nitrogen fertilization”
Claim · model-written summary
A dose of 100 kg N ha−1 is sufficient for potato tubers with high crude protein and starch content, especially at higher altitude.
Verbatim
e7“It could be concluded that the dose of 100 kg N ha−1 is sufficient for production of potato tubers with high content of both crude protein and starch, especially in production areas with higher altitude”
Claim · model-written summary
A dose of 200 N is justifiable only in lower-altitude production areas.
- Taxon
- potatoSolanum tuberosume5
- Outcome
- dose of 200 N is justifiablee6
- Setting
- production areas with lower altitude (below 400 m a.s.l.)e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The dose of 200 N is justifiable only in production areas with lower altitude (below 400 m a.s.l.)”
e5“Fertilization levels of 100 and 200 kg N ha−1 applied before potato crop planting were compared”
The same questions in other papers
fertilization · quality: sugar starch · Solanum tuberosum (potato)Results differ
18 papers in the same direction as this paper · 42 in the opposite direction
- positive
- positive
- positive
57 papers more in this group
See all 61 papers →fertilization · soil: chemistry · Solanum tuberosum (potato)Positive and negative results
2 papers in the same direction as this paper · 23 in the opposite direction
- positive
- positive
- positive
22 papers more in this group
See all 26 papers →fertilization · quality: protein · Solanum tuberosum (potato)Results agree
22 papers in the same direction as this paper
- positive
- positive
- positive
19 papers more in this group
See all 23 papers →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.