Abstract
The influence of soil moisture on the competitive relationship between yellow nutsedge and cotton was determined in an additive competition experiment where main plots were irrigation regimes and subplots were nutsedge densities. Increasing nutsedge density caused a significant linear decrease in seed cotton yield. Regression analysis indicated that approximately 9 (1993), 12 (1994), or 37 (1995) kg ha −1 of seed cotton yield was lost for each additional initial nutsedge tuber per meter of crop row. Both postharvest stem biomass, an indicator of total aboveground biomass, and seed cotton yield increased with increasing soil moisture in all 3 yr of the study. Increasing yellow nutsedge density reduced midseason cotton height in both wet and dry soil moisture regimes but only slightly reduced postharvest stem biomass in the wet treatment in 1995. There was an interaction between soil moisture regime and yellow nutsedge density only with respect to midseason cotton leaf water potentials. Soil moisture availability did not interact with the effect of yellow nutsedge density with respect to end of the season stem biomass or seed cotton yield.
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Claims 10
Claim · model-written summary
Increasing nutsedge density was associated with a significant linear decrease in seed cotton yield
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- Increasing nutsedge densitye0
- Interactor
- nutsedgee0weed
- Outcome
- seed cotton yielde0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yellow nutsedge (Cyperus esculentus) density on cotton (Gossypium hirsutum)”
e0“Increasing nutsedge density caused a significant linear decrease in seed cotton yield”
Claim · model-written summary
Postharvest stem biomass increased with increasing soil moisture in all 3 years
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- increasing soil moisturee1
- Outcome
- postharvest stem biomasse1
- Direction
- increasede1
- Qualifier
- in all 3 yr of the studye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yellow nutsedge (Cyperus esculentus) density on cotton (Gossypium hirsutum)”
e1“Both postharvest stem biomass, an indicator of total aboveground biomass, and seed cotton yield increased with increasing soil moisture in all 3 yr of the study”
Claim · model-written summary
Seed cotton yield increased with increasing soil moisture in all 3 years
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- increasing soil moisturee1
- Outcome
- seed cotton yielde1
- Direction
- increasede1
- Qualifier
- in all 3 yr of the studye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yellow nutsedge (Cyperus esculentus) density on cotton (Gossypium hirsutum)”
e1“Both postharvest stem biomass, an indicator of total aboveground biomass, and seed cotton yield increased with increasing soil moisture in all 3 yr of the study”
Claim · model-written summary
Each additional initial nutsedge tuber per meter of row was associated with a loss of about 9 kg ha−1 of seed cotton yield in 1993
- Taxon
- cottonGossypium hirsutumt0
- Interactor
- nutsedgee2weed
- Outcome
- seed cotton yielde2
- Direction
- loste2
- Value
- 9 (1993)e2
- Qualifier
- for each additional initial nutsedge tuber per meter of crop rowe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yellow nutsedge (Cyperus esculentus) density on cotton (Gossypium hirsutum)”
e2“Regression analysis indicated that approximately 9 (1993), 12 (1994), or 37 (1995) kg ha −1 of seed cotton yield was lost for each additional initial nutsedge tuber per meter of crop row”
Claim · model-written summary
Each additional initial nutsedge tuber per meter of row was associated with a loss of about 12 kg ha−1 of seed cotton yield in 1994
- Taxon
- cottonGossypium hirsutumt0
- Interactor
- nutsedgee2weed
- Outcome
- seed cotton yielde2
- Direction
- loste2
- Value
- 12 (1994)e2
- Qualifier
- for each additional initial nutsedge tuber per meter of crop rowe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yellow nutsedge (Cyperus esculentus) density on cotton (Gossypium hirsutum)”
e2“Regression analysis indicated that approximately 9 (1993), 12 (1994), or 37 (1995) kg ha −1 of seed cotton yield was lost for each additional initial nutsedge tuber per meter of crop row”
Claim · model-written summary
Each additional initial nutsedge tuber per meter of row was associated with a loss of about 37 kg ha−1 of seed cotton yield in 1995
- Taxon
- cottonGossypium hirsutumt0
- Interactor
- nutsedgee2weed
- Outcome
- seed cotton yielde2
- Direction
- loste2
- Value
- 37 (1995)e2
- Qualifier
- for each additional initial nutsedge tuber per meter of crop rowe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yellow nutsedge (Cyperus esculentus) density on cotton (Gossypium hirsutum)”
e2“Regression analysis indicated that approximately 9 (1993), 12 (1994), or 37 (1995) kg ha −1 of seed cotton yield was lost for each additional initial nutsedge tuber per meter of crop row”
Claim · model-written summary
Increasing yellow nutsedge density reduced midseason cotton height in both wet and dry soil moisture regimes
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Increasing yellow nutsedge densitye3
- Interactor
- yellow nutsedget0weed
- Outcome
- midseason cotton heighte3
- Direction
- reducede3
- Qualifier
- in both wet and dry soil moisture regimese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yellow nutsedge (Cyperus esculentus) density on cotton (Gossypium hirsutum)”
e3“Increasing yellow nutsedge density reduced midseason cotton height in both wet and dry soil moisture regimes but only slightly reduced postharvest stem biomass in the wet treatment in 1995”
Claim · model-written summary
Increasing yellow nutsedge density only slightly reduced postharvest stem biomass in the wet treatment in 1995
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Increasing yellow nutsedge densitye3
- Interactor
- yellow nutsedget0weed
- Outcome
- postharvest stem biomasse3
- Direction
- slightly reducede3
- Qualifier
- in the wet treatment in 1995e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yellow nutsedge (Cyperus esculentus) density on cotton (Gossypium hirsutum)”
e3“Increasing yellow nutsedge density reduced midseason cotton height in both wet and dry soil moisture regimes but only slightly reduced postharvest stem biomass in the wet treatment in 1995”
Claim · model-written summary
Soil moisture regime and yellow nutsedge density interacted for midseason cotton leaf water potential
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- soil moisture regime and yellow nutsedge densitye4
- Outcome
- midseason cotton leaf water potentialse4
- Qualifier
- interactione4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yellow nutsedge (Cyperus esculentus) density on cotton (Gossypium hirsutum)”
e4“There was an interaction between soil moisture regime and yellow nutsedge density only with respect to midseason cotton leaf water potentials”
Claim · model-written summary
Soil moisture availability did not interact with yellow nutsedge density for end-of-season stem biomass or seed cotton yield
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Soil moisture availabilitye5
- Outcome
- end of the season stem biomass or seed cotton yielde5
- Qualifier
- did not interacte5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“yellow nutsedge (Cyperus esculentus) density on cotton (Gossypium hirsutum)”
e5“Soil moisture availability did not interact with the effect of yellow nutsedge density with respect to end of the season stem biomass or seed cotton yield”