Abstract
Abstract Previous investigations have demonstrated a response in soybean [ Glycine max (L.) Merr.] yields to supplemental water applications during reproductive development, but few have described the effects of irrigation during different development periods on fruiting patterns and vegetative development in relation to yields. Variables included in this field experiment were four moisture regimes — unirrigated, full season irrigation, irrigation begun at bloom stage, and irrigation begun at pod fill stage — and three cultivars, ‘Ransom’, ‘Hamptom 266A’, and ‘Coker 102’. Data were collected for seed yield, pod number and dry weight, dry weight of vegetative components during reproductive development and seasonal soil moisture status. The soil was a sandy loam (Rhodic Paleudult, clayey, kaolinitic, thermic family). Full season and bloom stage irrigation treatments produced higher yields than the unirrigated check except for Hamptom 266A in 1974. Yields from plants receiving the podfill stage irrigation treatment were higher than the unirrigated check in drier seasons of 1972 and 1973 but not in 1974. Irrigation beginning at pod fill produced yields equal to the full season and bloom stage treatments in some cases and somewhat lower yields in other cases. Higher yields and greater response to irrigation was obtained from shorter, less vegetative Ransom plants than the other two cultivars. Water applications prior to blooming greatly increased vegetative dry weight, and number as well as dry weight of pods. Beginning irrigation during reproductive development had little effect on vegetative dry weight, but usually resulted in a greater number of pods late in the season than the unirrigated check.
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 9
Claim · model-written summary
Full-season irrigation generally increased soybean yield over the unirrigated check.
- Taxon
- soybean
Glycine maxt0 - Treatment
- Full seasone0
- Outcome
- yieldse0
- Direction
- highere0
- Qualifier
- except for Hamptom 266A in 1974e0
- Comparator
- unirrigated checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Full season and bloom stage irrigation treatments produced higher yields than the unirrigated check except for Hamptom 266A in 1974.”
t0“Soybean”
Claim · model-written summary
Bloom-stage irrigation generally increased soybean yield over the unirrigated check.
- Taxon
- soybeanGlycine maxt0
- Treatment
- bloom stage irrigatione0
- Outcome
- yieldse0
- Direction
- highere0
- Qualifier
- except for Hamptom 266A in 1974e0
- Comparator
- unirrigated checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Full season and bloom stage irrigation treatments produced higher yields than the unirrigated check except for Hamptom 266A in 1974.”
t0“Soybean”
Claim · model-written summary
Pod-fill irrigation increased yields in drier 1972 and 1973 but not in 1974.
- Taxon
- soybeanGlycine maxt0
- Treatment
- podfill stage irrigation treatmente0
- Outcome
- Yieldse0
- Direction
- highere0
- Qualifier
- in drier seasons of 1972 and 1973 but not in 1974e0
- Comparator
- unirrigated checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields from plants receiving the podfill stage irrigation treatment were higher than the unirrigated check in drier seasons of 1972 and 1973 but not in 1974.”
t0“Soybean”
Claim · model-written summary
Pod-fill irrigation yields matched full-season and bloom-stage treatments in some cases and were lower in others.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Irrigation beginning at pod fille0
- Outcome
- yieldse0
- Direction
- equale0
- Qualifier
- in some cases and somewhat lower yields in other casese0
- Comparator
- full season and bloom stage treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation beginning at pod fill produced yields equal to the full season and bloom stage treatments in some cases and somewhat lower yields in other cases.”
t0“Soybean”
Claim · model-written summary
Ransom had higher yield and irrigation response than the two other cultivars.
- Taxon
- soybeanGlycine maxt0
- Material
- Ransome0
- Outcome
- yields and greater response to irrigatione0
- Direction
- Highere0
- Comparator
- the other two cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher yields and greater response to irrigation was obtained from shorter, less vegetative Ransom plants than the other two cultivars.”
t0“Soybean”
Claim · model-written summary
Pre-bloom irrigation increased vegetative dry weight.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Water applications prior to bloominge0
- Outcome
- vegetative dry weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water applications prior to blooming greatly increased vegetative dry weight, and number as well as dry weight of pods.”
t0“Soybean”
Claim · model-written summary
Pre-bloom irrigation increased pod number and dry weight.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Water applications prior to bloominge0
- Outcome
- number as well as dry weight of podse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water applications prior to blooming greatly increased vegetative dry weight, and number as well as dry weight of pods.”
t0“Soybean”
Claim · model-written summary
Irrigation during reproduction had little effect on vegetative dry weight.
- Taxon
- soybeanGlycine maxt0
- Treatment
- irrigation during reproductive developmente0
- Outcome
- vegetative dry weighte0
- Direction
- little effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Beginning irrigation during reproductive development had little effect on vegetative dry weight”
t0“Soybean”
Claim · model-written summary
Irrigation during reproduction usually increased late-season pod number.
- Taxon
- soybeanGlycine maxt0
- Treatment
- irrigation during reproductive developmente0
- Outcome
- number of podse0
- Direction
- greatere0
- Qualifier
- late in the seasone0
- Comparator
- unirrigated checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Beginning irrigation during reproductive development had little effect on vegetative dry weight, but usually resulted in a greater number of pods late in the season than the unirrigated check.”
t0“Soybean”
The same questions in other papers
climate site · yield · Glycine max (soybean)Results differ
35 papers in the same direction as this paper · 36 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
69 papers more in this group
See all 73 papers →irrigation · growth · Glycine max (soybean)Positive and negative results
34 papers in the same direction as this paper · 79 in the opposite direction
- positive
- positive
- positive
110 papers more in this group
See all 114 papers →irrigation · yield · Glycine max (soybean)Positive and negative results
263 papers in the same direction as this paper · 72 in the opposite direction · 7 reporting no difference from an alternative
- negative
- negative
- positive
339 papers more in this group
See all 343 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.