Abstract
Abstract Cobb and Coker 488, late‐season (maturity group VIII) cultivars of soybean [Glycine max(L.) Merr], were grovn under irrigated and non‐irrigated conditions on a Norfolk loamy sand in a two‐year field experiment. Each cultivar was inoculated withBradyrhizobium japonicumstrains [USDA 3I1b110; Brazil 587; NifTAL 184 and 102 (NifTAL cultures of Brazil 587 and USDA 110, respectively); and North Carolina 1001, 1004, 1005, 1010, and 1029). Drought conditions were present both years, and irrigation significantly increased the overall yield (2.49 vs 1.92 Mg ha‐1). Coker 488 was significantly higher in seed yield than Cobb (2.55 vs 2.02 Mg ha‐1). Strain ofB.japonicumalso affected seed yields. NC1010‐inoculated soybean was significantly higher in seed yield rank than all other soybean at the P<0.01 level, when compared by single degree of freedom contrast (sdfc). The yield ranking of soybean inoculated with NC1001 was significantly lower than soybean inoculated with all other strains, when compared by sdfc (P<0.10). Other strains differed in responses which ranged from good to poor inoculants under specific water management conditions. For instance, under nonirrigated conditions, soybean inoculated with strains ofB.japonicumfrom North Carolina was significantly higher in seed yield than those inoculated with the cultures of USDA 110, B587, or the control, when compared by sdfc (P>0.03, 0.05, 0.06, respectively). Since soybean inoculated with either strain of USDA 110 was generally high in yield rank under irrigated conditions, their response to irrigation was large relative to soybean inoculated with the NC strain (P<0.04). Neither seed nitrogen nor xylem water potential was highly correlated to seed yield. Since seed yield and N content were not highly correlated, the amount of N accumulated in soybean dry mass and that removed in seed were not highly correlated. Thus, the amount of N returned to the soil would be affected by management combinations of late‐season determinate soybean cultivar,B.japonicumstrain, and irrigation
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Claims 11
Claim · model-written summary
Irrigation significantly increased soybean yield from 1.92 to 2.49 Mg ha‐1.
- Taxon
- soybean
Glycine maxt0 - Treatment
- irrigatione0
- Outcome
- overall yielde0
- Direction
- increasede0
- Value
- 2.49 vs 1.92 Mg ha‐1e0
- Comparator
- non‐irrigatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“were grovn under irrigated and non‐irrigated conditions on a Norfolk loamy sand in a two‐year field experiment. Each cultivar was inoculated withBradyrhizobium japonicumstrains [USDA 3I1b110; Brazil 587; NifTAL 184 and 102 (NifTAL cultures of Brazil 587 and USDA 110, respectively); and North Carolina 1001, 1004, 1005, 1010, and 1029). Drought conditions were present both years, and irrigation significantly increased the overall yield (2.49 vs 1.92 Mg ha‐1)”
t0“soybean”
Claim · model-written summary
Coker 488 had significantly higher seed yield than Cobb.
- Taxon
- soybeanGlycine maxt0
- Material
- Coker 488e0
- Outcome
- seed yielde0
- Direction
- highere0
- Value
- 2.55 vs 2.02 Mg ha‐1e0
- Comparator
- Cobbe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Coker 488 was significantly higher in seed yield than Cobb (2.55 vs 2.02 Mg ha‐1).”
t0“soybean”
Claim · model-written summary
Bradyrhizobium strain affected soybean seed yields.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Strain ofB.japonicume0
- Interactor
- B.japonicume0symbiont
- Outcome
- seed yieldse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Strain ofB.japonicumalso affected seed yields.”
t0“soybean”
Claim · model-written summary
NC1010 inoculation gave soybean significantly higher seed-yield rank than other inoculations.
- Taxon
- soybeanGlycine maxe0
- Treatment
- NC1010‐inoculatede0
- Interactor
- NC1010e0symbiont
- Outcome
- seed yield ranke0
- Direction
- highere0
- Comparator
- all other soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NC1010‐inoculated soybean was significantly higher in seed yield rank than all other soybean at the P<0.01 level”
Claim · model-written summary
NC1001 inoculation gave soybean significantly lower yield rank than other strains.
- Taxon
- soybeanGlycine maxe0
- Treatment
- inoculated with NC1001e0
- Interactor
- NC1001e0symbiont
- Outcome
- yield rankinge0
- Direction
- lowere0
- Comparator
- all other strainse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield ranking of soybean inoculated with NC1001 was significantly lower than soybean inoculated with all other strains”
Claim · model-written summary
North Carolina Bradyrhizobium strains gave higher nonirrigated soybean yield than USDA 110, B587 or control.
- Taxon
- soybeanGlycine maxe0
- Treatment
- strains ofB.japonicumfrom North Carolinae0
- Interactor
- B.japonicume0symbiont
- Outcome
- seed yielde0
- Direction
- highere0
- Comparator
- cultures of USDA 110, B587, or the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under nonirrigated conditions, soybean inoculated with strains ofB.japonicumfrom North Carolina was significantly higher in seed yield than those inoculated with the cultures of USDA 110, B587, or the control”
Claim · model-written summary
USDA 110 inoculated soybean had a larger irrigation response than NC-strain inoculated soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- irrigatione0
- Interactor
- NC straine0symbiont
- Outcome
- response to irrigatione0
- Direction
- largee0
- Comparator
- soybean inoculated with the NC straine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“their response to irrigation was large relative to soybean inoculated with the NC strain”
Claim · model-written summary
Soybean seed nitrogen was not highly correlated with seed yield.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- seed nitrogene0
- Outcome
- seed yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither seed nitrogen nor xylem water potential was highly correlated to seed yield.”
t0“soybean”
Claim · model-written summary
Soybean xylem water potential was not highly correlated with seed yield.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- xyleme0
- Outcome
- seed yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither seed nitrogen nor xylem water potential was highly correlated to seed yield.”
t0“soybean”
Claim · model-written summary
Nitrogen accumulated in soybean dry mass and nitrogen removed in seed were not highly correlated.
- Taxon
- soybeanGlycine maxe0
- Organ / stage
- seede0
- Outcome
- amount of N accumulated in soybean dry masse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the amount of N accumulated in soybean dry mass and that removed in seed were not highly correlated.”
Claim · model-written summary
The authors conclude that nitrogen returned to soil depends on soybean cultivar, rhizobial strain and irrigation.
- Taxon
- soybeanGlycine maxe0
- Treatment
- irrigatione0
- Interactor
- B.japonicume0symbiont
- Outcome
- amount of N returned to the soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the amount of N returned to the soil would be affected by management combinations of late‐season determinate soybean cultivar,B.japonicumstrain, and irrigation”
The same questions in other 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
- positive
- positive
- negative
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.