Abstract
S ummary An experiment to determine the effects of simulated acidic rain, applied at two frequencies and durations, on seed yields of two commercial cultivars of soybeans was performed during the summer of 1983. Plants were shielded from all ambient rainfalls automatically by two moveable exclusion covers and exposed to simulated rainfalls in quantities equal to the average amount of rainfall that occurs at the site during the growing season. Seed yields of soybeans (cv. Amsoy) exposed twice weekly to simulated rain of pH 41, 3.3 and 2.7 were, respectively, 0, 10 and 17 % below yields of plants exposed to simulated rain of pH 5.6. The linear treatment‐response function of seed yield versus rainfall pH for Amsoy was + 9.18 + 0.74x and had a correlation coefficient of 0.86 y is seed mass per plant and x is the pH of the simulated rain). The linear component of pH treatment differences showed a highly significant decrease in yield ( P = 0.0034). For Amsoy plants exposed to simulated rainfalls daily, plants exposed to pH 4.1, 3.3 and 2.7 exhibited yields 10, 19 and 12%, respectively, below those exposed to simulated rainfalls of pH 56. A treatment‐response function ( P = O.0713) of seed yield vs rainfall pH was y + 7.35 + 0.56x and had a correlation coefficient of 0.84. Seed yields of the Williams cultivar were not affected by rainfall acidity. In both cultivars the daily, short duration rainfall regimen resulted in significantly lower yields compared with the twice weekly, longer duration rainfalls. The major portion of the differences in seed yield can be accounted for by the observed differences in number of pods per plant.
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
Twice weekly rain at pH 41 gave Amsoy yield 0% below pH 5.6.
- Taxon
- soybeans
Glycine maxe0 - Material
- Amsoye0
- Treatment
- simulated rain of pH 41e0
- Outcome
- Seed yieldse0
- Direction
- belowe0
- Value
- 0e0
- Comparator
- simulated rain of pH 5.6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed yields of soybeans (cv. Amsoy) exposed twice weekly to simulated rain of pH 41, 3.3 and 2.7 were, respectively, 0, 10 and 17 % below yields of plants exposed to simulated rain of pH 5.6”
Claim · model-written summary
Twice weekly rain at pH 3.3 gave Amsoy yield 10% below pH 5.6.
- Taxon
- soybeansGlycine maxe0
- Material
- Amsoye0
- Treatment
- simulated rain of pH 41, 3.3 and 2.7e0
- Outcome
- Seed yieldse0
- Direction
- belowe0
- Value
- 10e0
- Comparator
- simulated rain of pH 5.6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed yields of soybeans (cv. Amsoy) exposed twice weekly to simulated rain of pH 41, 3.3 and 2.7 were, respectively, 0, 10 and 17 % below yields of plants exposed to simulated rain of pH 5.6”
Claim · model-written summary
Twice weekly rain at pH 2.7 gave Amsoy yield 17% below pH 5.6.
- Taxon
- soybeansGlycine maxe0
- Material
- Amsoye0
- Treatment
- simulated rain of pH 41, 3.3 and 2.7e0
- Outcome
- Seed yieldse0
- Direction
- belowe0
- Value
- 17 %e0
- Comparator
- simulated rain of pH 5.6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed yields of soybeans (cv. Amsoy) exposed twice weekly to simulated rain of pH 41, 3.3 and 2.7 were, respectively, 0, 10 and 17 % below yields of plants exposed to simulated rain of pH 5.6”
Claim · model-written summary
Amsoy yield had a positive linear association with rainfall pH under twice weekly rain.
- Taxon
- SOYBEANGlycine maxt0
- Material
- Amsoye0
- Outcome
- seed yielde0
- Value
- 0.86e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The linear treatment‐response function of seed yield versus rainfall pH for Amsoy was + 9.18 + 0.74x and had a correlation coefficient of 0.86”
t0“SOYBEAN”
Claim · model-written summary
Amsoy yields under daily rain were 10% lower at pH 4.1 than pH 56.
- Taxon
- SOYBEANGlycine maxt0
- Material
- Amsoye0
- Treatment
- pH 4.1e0
- Outcome
- yieldse0
- Direction
- belowe0
- Value
- 10e0
- Comparator
- pH 56e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For Amsoy plants exposed to simulated rainfalls daily, plants exposed to pH 4.1, 3.3 and 2.7 exhibited yields 10, 19 and 12%, respectively, below those exposed to simulated rainfalls of pH 56”
t0“SOYBEAN”
Claim · model-written summary
Amsoy yields under daily rain were 19% lower at pH 3.3 than pH 56.
- Taxon
- SOYBEANGlycine maxt0
- Material
- Amsoye0
- Treatment
- pH 4.1, 3.3 and 2.7e0
- Outcome
- yieldse0
- Direction
- belowe0
- Value
- 19e0
- Comparator
- pH 56e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For Amsoy plants exposed to simulated rainfalls daily, plants exposed to pH 4.1, 3.3 and 2.7 exhibited yields 10, 19 and 12%, respectively, below those exposed to simulated rainfalls of pH 56”
t0“SOYBEAN”
Claim · model-written summary
Amsoy yields under daily rain were 12% lower at pH 2.7 than pH 56.
- Taxon
- SOYBEANGlycine maxt0
- Material
- Amsoye0
- Treatment
- pH 4.1, 3.3 and 2.7e0
- Outcome
- yieldse0
- Direction
- belowe0
- Value
- 12%e0
- Comparator
- pH 56e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For Amsoy plants exposed to simulated rainfalls daily, plants exposed to pH 4.1, 3.3 and 2.7 exhibited yields 10, 19 and 12%, respectively, below those exposed to simulated rainfalls of pH 56”
t0“SOYBEAN”
Claim · model-written summary
Williams seed yields were not affected by rainfall acidity.
- Taxon
- SOYBEANGlycine maxt0
- Material
- Williamse0
- Treatment
- rainfall aciditye0
- Outcome
- Seed yieldse0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed yields of the Williams cultivar were not affected by rainfall acidity”
t0“SOYBEAN”
Claim · model-written summary
Daily rainfall produced significantly lower yields than twice weekly rainfall in both cultivars.
- Taxon
- SOYBEANGlycine maxt0
- Treatment
- daily, short duration rainfall regimene0
- Outcome
- yieldse0
- Direction
- lowere0
- Comparator
- twice weekly, longer duration rainfallse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both cultivars the daily, short duration rainfall regimen resulted in significantly lower yields compared with the twice weekly, longer duration rainfalls”
t0“SOYBEAN”
Claim · model-written summary
Differences in pod number accounted for most seed yield differences.
- Taxon
- SOYBEANGlycine maxt0
- Organ / stage
- podse0
- Outcome
- differences in seed yielde0
- Qualifier
- observed differences in number of pods per plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The major portion of the differences in seed yield can be accounted for by the observed differences in number of pods per plant”
t0“SOYBEAN”
The same questions in other papers
rainfall · yield · Glycine max (soybean)Results differ
23 papers in the same direction as this paper · 14 in the opposite direction
- positive
- negative
- negative
34 papers more in this group
See all 38 papers →ph · yield · Glycine max (soybean)Positive and negative results
12 papers in the same direction as this paper · 13 in the opposite direction
- negative
- negative
- no effect
22 papers more in this group
See all 26 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.