Abstract
Abstract Greenhouse studies were conducted to determine the effects of simulated acid precipitation on growth, yield, and nutrient content of soybean [ Glycine max (L.) Merr.] and snap bean ( Phaseolus vulgaris L.). Twenty cultivars of soybean and twelve cultivars of snap bean were grown in pots and treated with simulated precipitation at pH 2.5, 3.5, 4.5, or 5.6 (control). Soybean and snap bean plants were treated with simulated precipitation once a week beginning until fruit maturity. Soybean plants showed leaf scorching and yellowing of leaves at pH 2.5 and 3.5, whereas snap bean did not show any visible symptoms. Soybean and snap bean cultivars responded differently to acid precipitation treatments. ‘McNair 700’ and ‘Pioneer 5482’ soybean and ‘Commodore’ bush and ‘Provider’ bush snap bean cultivars yields were decreased significantly under acid treatments. Eighteen soybean and 10 snap bean cultivars were unaffected. In general, acid precipitation treatments resulted in a greater number of soybean pods without seed compared to the control. Treatments at pH 3.5 and 2.5 affected soybean and snap bean growth and yield more than the other pH levels. Potassium content of soybean shoot decreased significantly under acid precipitation treatments, whereas Ca, Mg, and micronutrient contents were not affected by low pH treatment. Nutrient content of snap bean was unaffected by acidity.
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Claims 12
Claim · model-written summary
Soybean leaves scorched and yellowed at pH 2.5 and 3.5.
- Taxon
- Soybean
Glycine maxe0 - Treatment
- pH 2.5 and 3.5e0
- Outcome
- leaf scorching and yellowing of leavese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean plants showed leaf scorching and yellowing of leaves at pH 2.5 and 3.5”
Claim · model-written summary
Snap bean showed no visible symptoms at the specified acidic pH levels.
Not reportedTreatmentComparator
Verbatim
e0“whereas snap bean did not show any visible symptoms.”
Claim · model-written summary
Soybean cultivars McNair 700 and Pioneer 5482 had significantly lower yields under acid treatments.
- Taxon
- soybeanGlycine maxe0
- Material
- ‘McNair 700’ and ‘Pioneer 5482’e0
- Treatment
- acid treatmentse0
- Outcome
- yieldse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘McNair 700’ and ‘Pioneer 5482’ soybean and ‘Commodore’ bush and ‘Provider’ bush snap bean cultivars yields were decreased significantly under acid treatments.”
Claim · model-written summary
Snap bean cultivars Commodore and Provider had significantly lower yields under acid treatments.
- Taxon
- snap beane0
- Material
- ‘Commodore’ bush and ‘Provider’ bushe0
- Treatment
- acid treatmentse0
- Outcome
- yieldse0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“‘McNair 700’ and ‘Pioneer 5482’ soybean and ‘Commodore’ bush and ‘Provider’ bush snap bean cultivars yields were decreased significantly under acid treatments.”
Claim · model-written summary
Yields of eighteen soybean cultivars were unaffected.
- Taxon
- soybeanGlycine maxe0
- Outcome
- cultivarse0
- Direction
- unaffectede0
- Value
- Eighteene0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Eighteen soybean and 10 snap bean cultivars were unaffected.”
Claim · model-written summary
Yields of ten snap bean cultivars were unaffected.
Not reportedTreatmentComparator
Verbatim
e0“Eighteen soybean and 10 snap bean cultivars were unaffected.”
Claim · model-written summary
Acid precipitation produced more soybean pods without seed than the control.
- Taxon
- soybeanGlycine maxe0
- Treatment
- acid precipitation treatmentse0
- Outcome
- soybean pods without seede0
- Direction
- greatere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“acid precipitation treatments resulted in a greater number of soybean pods without seed compared to the control.”
Claim · model-written summary
pH 3.5 and 2.5 affected soybean growth and yield more than other pH levels.
- Taxon
- soybeanGlycine maxe0
- Treatment
- pH 3.5 and 2.5e0
- Outcome
- growth and yielde0
- Direction
- moree0
- Comparator
- other pH levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatments at pH 3.5 and 2.5 affected soybean and snap bean growth and yield more than the other pH levels.”
Claim · model-written summary
pH 3.5 and 2.5 affected snap bean growth and yield more than other pH levels.
Verbatim
e0“Treatments at pH 3.5 and 2.5 affected soybean and snap bean growth and yield more than the other pH levels.”
Claim · model-written summary
Acid precipitation significantly decreased potassium content in soybean shoots.
- Taxon
- soybeanGlycine maxe0
- Treatment
- acid precipitation treatmentse0
- Outcome
- Potassium content of soybean shoote0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium content of soybean shoot decreased significantly under acid precipitation treatments”
Claim · model-written summary
Low pH did not affect soybean shoot calcium, magnesium or micronutrient contents.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- low pH treatmente0
- Outcome
- Ca, Mg, and micronutrient contentse0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ca, Mg, and micronutrient contents were not affected by low pH treatment.”
t0“Soybean”
Claim · model-written summary
Acidity did not affect snap bean nutrient content.
Not reportedComparator
Verbatim
e0“Nutrient content of snap bean was unaffected by acidity.”
The same questions in other papers
ph · nutrient: content · Phaseolus vulgaris (common bean)Positive and negative results
3 papers in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 papers →ph · nutrient: content · Glycine max (soybean)Positive and negative results
10 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
10 papers more in this group
See all 14 papers →rainfall · nutrient: content · Glycine max (soybean)Results agree
2 papers in the same direction as this paper
- negative
- negative
ph · crop injury · Glycine max (soybean)Results agree
3 papers in the same direction as this paper
- negative
- negative
- negative
rainfall · organism · Glycine max (soybean)Results agree
3 papers in the same direction as this paper
- negative
- negative
- no effect
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.