Abstract
BACKGROUND: The effect of water-absorbing soil amendments on photosynthesis characteristics and tuber nutritional quality was investigated in a field experiment in a semi-arid region in northern China in 2010-2012. Treatments included two synthetic water-absorbing amendments, potassium polyacrylate (PAA) and polyacrylamide (PAM), and one natural amendment, humic acid (HA), both as single amendments and compound amendments (HA combined with PAA or PAM), and a no amendment control. RESULTS: Soil amendments had a highly significant effect (P ≤ 0.01) on photosynthesis characteristics, dry biomass, crop root/shoot (R/S) ratio and tuber nutritional quality. They improved both dry biomass above ground and dry biomass underground in the whole growing season by 4.6-31.2 and 1.1-83.1% respectively in all three years. Crop R/S ratio was reduced in the early growing season by 2.0-29.4% and increased in the later growing season by 2.3-32.6%. Soil amendments improved leaf soil plant analysis development value, net photosynthesis rate, stomatal conductance and transpiration rate by 1.4-17.0, 5.1-45.9, 2.4-90.6 and 2.0-22.6% respectively and reduced intercellular CO2 concentration by 2.1-19.5% in all three years. CONCLUSION: Amendment treatment with PAM + HA always had the greatest effect on photosynthesis characteristics and tuber nutritional quality among all amendment treatments and thus merits further research.
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 10
Claim · model-written summary
Amendments increased aboveground dry biomass by 4.6–31.2%.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- amendmentse0
- Outcome
- dry biomass above grounde1
- Direction
- improvede1
- Value
- 4.6-31.2e1
- Comparator
- no amendment controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato”
e0“Treatments included two synthetic water-absorbing amendments”
e1“They improved both dry biomass above ground and dry biomass underground in the whole growing season by 4.6-31.2 and 1.1-83.1% respectively in all three years”
e2“no amendment control”
Claim · model-written summary
Amendments increased underground dry biomass by 1.1–83.1%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- amendmentse0
- Outcome
- dry biomass undergrounde1
- Direction
- improvede1
- Value
- 1.1-83.1%e1
- Comparator
- no amendment controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato”
e0“Treatments included two synthetic water-absorbing amendments”
e1“They improved both dry biomass above ground and dry biomass underground in the whole growing season by 4.6-31.2 and 1.1-83.1% respectively in all three years”
e2“no amendment control”
Claim · model-written summary
Amendments reduced the early-season root-to-shoot ratio by 2.0–29.4%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- amendmentse0
- Outcome
- Crop R/S ratioe1
- Direction
- reducede1
- Value
- 2.0-29.4%e1
- Comparator
- no amendment controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato”
e0“Treatments included two synthetic water-absorbing amendments”
e1“Crop R/S ratio was reduced in the early growing season by 2.0-29.4% and increased in the later growing season by 2.3-32.6%”
e2“no amendment control”
Claim · model-written summary
Amendments increased the late-season root-to-shoot ratio by 2.3–32.6%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- amendmentse0
- Outcome
- Crop R/S ratioe1
- Direction
- increasede1
- Value
- 2.3-32.6%e1
- Comparator
- no amendment controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato”
e0“Treatments included two synthetic water-absorbing amendments”
e1“Crop R/S ratio was reduced in the early growing season by 2.0-29.4% and increased in the later growing season by 2.3-32.6%”
e2“no amendment control”
Claim · model-written summary
Amendments improved leaf SPAD value by 1.4–17.0%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- amendmentse0
- Outcome
- leaf soil plant analysis development valuee1
- Direction
- improvede1
- Value
- 1.4-17.0e1
- Comparator
- no amendment controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato”
e0“Treatments included two synthetic water-absorbing amendments”
e1“Soil amendments improved leaf soil plant analysis development value, net photosynthesis rate, stomatal conductance and transpiration rate by 1.4-17.0, 5.1-45.9, 2.4-90.6 and 2.0-22.6% respectively”
e2“no amendment control”
Claim · model-written summary
Amendments improved net photosynthesis rate by 5.1–45.9%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- amendmentse0
- Outcome
- net photosynthesis ratee1
- Direction
- improvede1
- Value
- 5.1-45.9e1
- Comparator
- no amendment controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato”
e0“Treatments included two synthetic water-absorbing amendments”
e1“Soil amendments improved leaf soil plant analysis development value, net photosynthesis rate, stomatal conductance and transpiration rate by 1.4-17.0, 5.1-45.9, 2.4-90.6 and 2.0-22.6% respectively”
e2“no amendment control”
Claim · model-written summary
Amendments improved stomatal conductance by 2.4–90.6%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- amendmentse0
- Outcome
- stomatal conductancee1
- Direction
- improvede1
- Value
- 2.4-90.6e1
- Comparator
- no amendment controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato”
e0“Treatments included two synthetic water-absorbing amendments”
e1“Soil amendments improved leaf soil plant analysis development value, net photosynthesis rate, stomatal conductance and transpiration rate by 1.4-17.0, 5.1-45.9, 2.4-90.6 and 2.0-22.6% respectively”
e2“no amendment control”
Claim · model-written summary
Amendments improved transpiration rate by 2.0–22.6%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- amendmentse0
- Outcome
- transpiration ratee1
- Direction
- improvede1
- Value
- 2.0-22.6%e1
- Comparator
- no amendment controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato”
e0“Treatments included two synthetic water-absorbing amendments”
e1“Soil amendments improved leaf soil plant analysis development value, net photosynthesis rate, stomatal conductance and transpiration rate by 1.4-17.0, 5.1-45.9, 2.4-90.6 and 2.0-22.6% respectively”
e2“no amendment control”
Claim · model-written summary
Amendments reduced intercellular CO2 concentration by 2.1–19.5%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- amendmentse0
- Outcome
- intercellular CO2 concentratione1
- Direction
- reducede1
- Value
- 2.1-19.5%e1
- Comparator
- no amendment controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato”
e0“Treatments included two synthetic water-absorbing amendments”
e1“reduced intercellular CO2 concentration by 2.1-19.5% in all three years”
e2“no amendment control”
Claim · model-written summary
PAM plus HA had the greatest effect on photosynthesis and tuber quality among amendments.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- PAM + HAe0
- Outcome
- photosynthesis characteristics and tuber nutritional qualitye0
- Direction
- greateste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“potato”
e0“Amendment treatment with PAM + HA always had the greatest effect on photosynthesis characteristics and tuber nutritional quality among all amendment treatments”
The same questions in other papers
other · growth · Solanum tuberosum (potato)Positive and negative results
32 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
30 papers more in this group
See all 34 papers →other · physiology: gas exchange · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
other · physiology: photosynthesis · Solanum tuberosum (potato)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.