Abstract
Soybean yield and quality are sensitive to soil moisture.Potassium fertilizer application may enhance the effect of soil moisture on the quality and biomass/seed yield of soybean at different growth stages,but few reports have focused on it.In this study,pot-experiments were carried out to investigate the effect of water-potassium coupling on quality and biomass/seed yield of soybean.Three water supply levels and three potassium fertilizer application levels were applied at vegetative stage(V2-R1),flowering stage(R1-R3) and podding stage(R3-R5),respectively.The results showed that soil waterlogging at vegetative stage increased soybean protein content to a certain extent,however,both soil drought and waterlogging stress reduced the percentage of soybean protein/oil on other growth stages.Potassium fertilizer was beneficial to protein accumulation but not to oil accumulation,indicating that potassium fertilizer played an important role only when soil water content was suitably supplied.For all the stages,both drought and waterlogging conditions were found to decrease the yield of soybean,in which drought condition reduced the yield more significantly.The negative effect of soil drought condition at different stages on soybean yield showed in the order: podding stage flowering stagevegetative stage,and soil waterlogging had the similar negative effect on soybean yield.W2K3 was the treament with the highest biomass accumulation,and CK was the one with the optimal economic coefficient at all time for all the stages.In general,the soybean seed yield increased with increasing application of potassium fertilizer,and potassium fertilizer have the positive effect on soybean seed yield when the soil water content was controlled at vegetative stage,however,no effect was observed when the soil water content was controlled at flowering stage and podding stage.The interactive effect of water×potassium fertilizer on soybean seed yield was not found when water was controlled at vegetative stage,whereas the effect was significant as water was controlled at flowering stage and podding stage.
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Claims 16
Claim · model-written summary
Waterlogging at the vegetative stage increased protein content.
- Taxon
- soybean
Glycine maxe0 - Treatment
- soil waterlogging at vegetative stagee0
- Outcome
- protein contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil waterlogging at vegetative stage increased soybean protein content to a certain extent”
Claim · model-written summary
Drought and waterlogging at other stages reduced the protein and oil percentage.
- Taxon
- soybeanGlycine maxe0
- Treatment
- soil drought and waterlogging stresse0
- Outcome
- percentage of soybean protein/oile0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both soil drought and waterlogging stress reduced the percentage of soybean protein/oil on other growth stages.”
Claim · model-written summary
Potassium fertilizer favored protein accumulation.
Not reportedTaxonComparator
Verbatim
e0“Potassium fertilizer was beneficial to protein accumulation but not to oil accumulation”
Claim · model-written summary
Potassium fertilizer did not favor oil accumulation.
Not reportedTaxonComparator
Verbatim
e0“Potassium fertilizer was beneficial to protein accumulation but not to oil accumulation”
Claim · model-written summary
Drought decreased yield at all stages.
- Taxon
- soybeanGlycine maxe0
- Treatment
- droughte0
- Outcome
- yield of soybeane0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For all the stages,both drought and waterlogging conditions were found to decrease the yield of soybean,in which drought condition reduced the yield more significantly.”
Claim · model-written summary
Waterlogging decreased yield at all stages.
- Taxon
- soybeanGlycine maxe0
- Treatment
- waterlogginge0
- Outcome
- yield of soybeane0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For all the stages,both drought and waterlogging conditions were found to decrease the yield of soybean,in which drought condition reduced the yield more significantly.”
Claim · model-written summary
Drought reduced yield more than waterlogging.
Not reportedTaxonComparator
Verbatim
e0“drought condition reduced the yield more significantly.”
Claim · model-written summary
The drought penalty ranked podding above flowering above vegetative stage.
- Taxon
- soybeanGlycine maxe0
- Outcome
- negative effect of soil drought condition at different stages on soybean yielde0
- Qualifier
- podding stage flowering stagevegetative stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The negative effect of soil drought condition at different stages on soybean yield showed in the order: podding stage flowering stagevegetative stage”
Claim · model-written summary
Waterlogging showed a similar stage ranking for yield loss.
- Taxon
- soybeanGlycine maxe0
- Outcome
- negative effect on soybean yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and soil waterlogging had the similar negative effect on soybean yield.”
Claim · model-written summary
W2K3 gave highest biomass accumulation.
Not reportedTaxon
Verbatim
e0“W2K3 was the treament with the highest biomass accumulation”
Claim · model-written summary
CK gave the optimal economic coefficient.
Not reportedTaxon
Verbatim
e0“CK was the one with the optimal economic coefficient at all time for all the stages.”
Claim · model-written summary
Seed yield increased with potassium application.
- Taxon
- soybeanGlycine maxe0
- Treatment
- increasing application of potassium fertilizere0
- Outcome
- seed yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the soybean seed yield increased with increasing application of potassium fertilizer”
Claim · model-written summary
Potassium improved seed yield when water was controlled at vegetative stage.
- Taxon
- soybeanGlycine maxe0
- Treatment
- potassium fertilizere0
- Outcome
- seed yielde0
- Direction
- positive effecte0
- Qualifier
- soil water content was controlled at vegetative stagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium fertilizer have the positive effect on soybean seed yield when the soil water content was controlled at vegetative stage”
Claim · model-written summary
Potassium had no observed yield effect when water was controlled at flowering and podding stages.
Not reportedTaxonTreatmentComparator
Verbatim
e0“no effect was observed when the soil water content was controlled at flowering stage and podding stage.”
Claim · model-written summary
Water and potassium did not interact for yield at vegetative stage.
- Taxon
- soybeanGlycine maxe0
- Treatment
- water×potassium fertilizere0
- Outcome
- interactive effect of water×potassium fertilizer on soybean seed yielde0
- Direction
- not founde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The interactive effect of water×potassium fertilizer on soybean seed yield was not found when water was controlled at vegetative stage”
Claim · model-written summary
Water and potassium interacted significantly for yield at flowering and podding stages.
Not reportedTaxonTreatmentDirection
Verbatim
e0“whereas the effect was significant as water was controlled at flowering stage and podding stage.”
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See all 1,192 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.