Abstract
Abstract Soybean [ Glycine max (L.) Merr.] emergence is influenced by the interaction of initial seed zone soil water content and temperature. Stress due to soil water content that is great enough for seed imbibition but too low for radicle emergence from the testa reduces emergence. Previous research has not determined whether emergence is reduced by soil drying after the seeds have imbibed water. Our objective was to evaluate soybean emergence influenced by initial seed zone soil water content and soil drying at three day/night soil temperature regimes (17/8, 21/12, and 25/16°C) as the number of days of soil water deficit and temperature stress increased. The experiment was conducted under controlled temperature conditions using an incubator. Emergence depended on both initial seed zone soil water content and temperature. As the number of days of soil moisture deficit increased, soil drying reduced emergence at initial soil water contents of 0.07 and 0.09 kg kg −1 . If the radicle had emerged from the testa and the soil water content was reduced below the initial soil water content due to drying, emergence was reduced. If seed imbibition occurred, but the initial soil moisture was too dry for the radicle to emerge from the testa, emergence decreased as the number of days of stress increased. The results show that the influence of seedbed drying on percent emergence depended on the initial soil water content and the number of days until adequate soil water content was restored.
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Claims 4
Claim · model-written summary
Soybean emergence depended on both initial seed zone soil water content and temperature.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- initial seed zone soil water content and temperaturee1
- Outcome
- Emergencee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Emergence depended on both initial seed zone soil water content and temperature”
t0“Soybean”
Claim · model-written summary
As the number of days of soil moisture deficit increased, soil drying reduced soybean emergence at initial soil water contents of 0.07 and 0.09 kg kg-1.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- soil dryinge1
- Outcome
- emergencee1
- Direction
- reducede1
- Qualifier
- initial soil water contents of 0.07 and 0.09 kg kg −1e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“As the number of days of soil moisture deficit increased, soil drying reduced emergence at initial soil water contents of 0.07 and 0.09 kg kg −1”
t0“Soybean”
Claim · model-written summary
If the radicle had emerged and soil water content fell below the initial level due to drying, soybean emergence was reduced.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- dryinge1
- Outcome
- emergencee1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“If the radicle had emerged from the testa and the soil water content was reduced below the initial soil water content due to drying, emergence was reduced”
t0“Soybean”
Claim · model-written summary
If seed imbibition occurred but initial soil moisture was too dry for radicle emergence, soybean emergence decreased as the number of days of stress increased.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- number of days of stresse1
- Outcome
- emergencee1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“If seed imbibition occurred, but the initial soil moisture was too dry for the radicle to emerge from the testa, emergence decreased as the number of days of stress increased”
t0“Soybean”
The same questions in other papers
processing · growth · Glycine max (soybean)Positive and negative results
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