Abstract
SUMMARYThe influence of inoculum level, soil fertility, soil temperature, and cotton cultivar on vesicular-arbuscular mycorrhizal development and plant growth were determined. In a phosphorus-deficient soil, inoculum levels of either 200 or 400 azygospores of Gigaspora margarita per plant significantly stimulated cotton growth, whereas rates of 10, 50, and 100 spores per plant had little or no effect. In a soil deficient in nitrogen and phosphorus, G. margarita increased plant growth only when sufficient nitrogen was added, but the mycorrhizal growth response was not as great as when both nitrogen and superphosphate were added to non-mycorrhizal plants. When phosphorus was deficient in the soil mix, mycorrhizal plants consistently had a higher content of this element in the foliage than did nonmycorrhizal cotton. Addition of superphosphate (25 μg or more of P/g of soil) to a soil containing 10 μg/g of phosphorus produced a growth increase at least equal to the growth response induced by G. margarita or Glomus etunicatus, and rates of 50 and 150 μg/g suppressed root infection. Maximum mycorrhizal development by G. margarita and subsequent cotton growth stimulation occurred at 30 and 24 C and was slight or absent at 19 or 14 C. Growth stimulation of five cotton cultivars inoculated with G. margarita varied considerably; Coker 310 and Stoneville 213 responded best, Acala 1517–70 and Deltapine 16 were marginally influenced, and Paymaster 909 was relatively unaffected.
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Claims 13
Claim · model-written summary
In a phosphorus-deficient soil, 200 or 400 azygospores of Gigaspora margarita per plant significantly stimulated cotton growth.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- inoculum levels of either 200 or 400 azygospores of Gigaspora margarita per plante0
- Interactor
- Gigaspora margarita
Gigaspora margaritae0symbiont - Outcome
- growthe0
- Direction
- stimulatede0
- Setting
- phosphorus-deficient soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In a phosphorus-deficient soil, inoculum levels of either 200 or 400 azygospores of Gigaspora margarita per plant significantly stimulated cotton growth”
Claim · model-written summary
In a phosphorus-deficient soil, rates of 10, 50 and 100 spores of Gigaspora margarita per plant had little or no effect on cotton growth.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- rates of 10, 50, and 100 spores per plante0
- Interactor
- Gigaspora margaritaGigaspora margaritae0symbiont
- Outcome
- growthe0
- Direction
- little or no effecte0
- Setting
- phosphorus-deficient soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In a phosphorus-deficient soil, inoculum levels of either 200 or 400 azygospores of Gigaspora margarita per plant significantly stimulated cotton growth, whereas rates of 10, 50, and 100 spores per plant had little or no effect”
Claim · model-written summary
In a soil deficient in nitrogen and phosphorus, G. margarita increased plant growth only when sufficient nitrogen was added, but the response was smaller than when both nitrogen and superphosphate were added to non-mycorrhizal plants.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- G. margaritae0
- Interactor
- G. margaritaGigaspora margaritae0symbiont
- Outcome
- plant growthe0
- Direction
- increasede0
- Qualifier
- only when sufficient nitrogen was added, but the mycorrhizal growth response was not as great as when both nitrogen and superphosphate were added to non-mycorrhizal plantse0
- Setting
- soil deficient in nitrogen and phosphoruse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth of Cotton”
e0“In a soil deficient in nitrogen and phosphorus, G. margarita increased plant growth only when sufficient nitrogen was added, but the mycorrhizal growth response was not as great as when both nitrogen and superphosphate were added to non-mycorrhizal plants”
Claim · model-written summary
When soil phosphorus was deficient, mycorrhizal cotton plants consistently had a higher foliar phosphorus content than nonmycorrhizal cotton.
- Taxon
- cottonGossypium hirsutume0
- Organ / stage
- foliagee0
- Treatment
- mycorrhizal plantse0
- Outcome
- content of this element in the foliagee0
- Direction
- highere0
- Comparator
- nonmycorrhizal cottone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When phosphorus was deficient in the soil mix, mycorrhizal plants consistently had a higher content of this element in the foliage than did nonmycorrhizal cotton”
Claim · model-written summary
Superphosphate at 25 ug P/g soil or more in a soil with 10 ug/g phosphorus produced a growth increase at least equal to the response induced by G. margarita or Glomus etunicatus.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Addition of superphosphate (25 μg or more of P/g of soil)e0
- Interactor
- G. margaritaGigaspora margaritae0symbiont
- Second interactor
- Glomus etunicatuse0symbiont
- Outcome
- growthe0
- Direction
- at least equale0
- Comparator
- growth response induced by G. margarita or Glomus etunicatuse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth of Cotton”
e0“Addition of superphosphate (25 μg or more of P/g of soil) to a soil containing 10 μg/g of phosphorus produced a growth increase at least equal to the growth response induced by G. margarita or Glomus etunicatus”
Claim · model-written summary
Superphosphate rates of 50 and 150 ug/g suppressed root infection.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- rates of 50 and 150 μg/ge0
- Outcome
- root infectione0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Growth of Cotton”
e0“rates of 50 and 150 μg/g suppressed root infection”
Claim · model-written summary
Maximum mycorrhizal development by G. margarita and subsequent cotton growth stimulation occurred at 30 and 24 C.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- 30 and 24 Ce0
- Interactor
- G. margaritaGigaspora margaritae0symbiont
- Outcome
- Maximum mycorrhizal development by G. margarita and subsequent cotton growth stimulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum mycorrhizal development by G. margarita and subsequent cotton growth stimulation occurred at 30 and 24 C and was slight or absent at 19 or 14 C”
Claim · model-written summary
Mycorrhizal development by G. margarita and cotton growth stimulation were slight or absent at 19 or 14 C.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- 19 or 14 Ce0
- Interactor
- G. margaritaGigaspora margaritae0symbiont
- Outcome
- Maximum mycorrhizal development by G. margarita and subsequent cotton growth stimulatione0
- Qualifier
- slight or absente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum mycorrhizal development by G. margarita and subsequent cotton growth stimulation occurred at 30 and 24 C and was slight or absent at 19 or 14 C”
Claim · model-written summary
Growth stimulation by G. margarita was among the best in cotton cultivar Coker 310.
- Taxon
- cottonGossypium hirsutume0
- Material
- Coker 310e1
- Interactor
- G. margaritaGigaspora margaritae0symbiont
- Outcome
- Growth stimulatione0
- Qualifier
- responded beste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth stimulation of five cotton cultivars inoculated with G. margarita”
e1“Coker 310 and Stoneville 213 responded best”
Claim · model-written summary
Growth stimulation by G. margarita was among the best in cotton cultivar Stoneville 213.
- Taxon
- cottonGossypium hirsutume0
- Material
- Stoneville 213e1
- Interactor
- G. margaritaGigaspora margaritae0symbiont
- Outcome
- Growth stimulatione0
- Qualifier
- responded beste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth stimulation of five cotton cultivars inoculated with G. margarita”
e1“Coker 310 and Stoneville 213 responded best”
Claim · model-written summary
Cotton cultivar Acala 1517–70 was marginally influenced by G. margarita inoculation.
- Taxon
- cottonGossypium hirsutume0
- Material
- Acala 1517–70e1
- Interactor
- G. margaritaGigaspora margaritae0symbiont
- Outcome
- Growth stimulatione0
- Qualifier
- marginally influencede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth stimulation of five cotton cultivars inoculated with G. margarita”
e1“Acala 1517–70 and Deltapine 16 were marginally influenced”
Claim · model-written summary
Cotton cultivar Deltapine 16 was marginally influenced by G. margarita inoculation.
- Taxon
- cottonGossypium hirsutume0
- Material
- Deltapine 16e1
- Interactor
- G. margaritaGigaspora margaritae0symbiont
- Outcome
- Growth stimulatione0
- Qualifier
- marginally influencede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth stimulation of five cotton cultivars inoculated with G. margarita”
e1“Acala 1517–70 and Deltapine 16 were marginally influenced”
Claim · model-written summary
Cotton cultivar Paymaster 909 was relatively unaffected by G. margarita inoculation.
- Taxon
- cottonGossypium hirsutume0
- Material
- Paymaster 909e1
- Interactor
- G. margaritaGigaspora margaritae0symbiont
- Outcome
- Growth stimulatione0
- Qualifier
- relatively unaffectede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth stimulation of five cotton cultivars inoculated with G. margarita”
e1“Paymaster 909 was relatively unaffected”
The same questions in other papers
Gigaspora margarita · growth · Gossypium hirsutum (cotton)Results agree
2 papers in the same direction as this paper
- positive
- positive
inoculation · growth · Gossypium hirsutum (cotton)Positive and negative results
60 papers in the same direction as this paper · 12 in the opposite direction
- negative
- negative
- no effect
69 papers more in this group
See all 73 papers →phosphorus · Gigaspora margarita · Gossypium hirsutum (cotton)Results agree
1 paper in the same direction as this paper
- positive
mycorrhiza · molecular: metabolites · Gossypium hirsutum (cotton)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.