Abstract
High density planting system have the potential for increased yields in high yielding, high input production systems. To attain higher yields in high density planting system in cotton relative to conventional spaced cotton must depend on increased biomass production or partitioning to boll. The present experiment was conducted for two consecutive seasons to analyse the morpho- phenological characters and leaf CO2 exchange rates of cotton in five different spacings i.e. 45 x 10 cm2, 45 x 15 cm2,45 x 20 cm2, 45 x 30 cm2 and 60 x 30 cm2 in two American cotton genotypes i.e NDLH1938 and NH 615.Wider spacing produced significantly higher growth attributes like boll number (26.3) sympodia (12.4), leaf photosynthetic rate (26.25 μmol m-2 sec-1) at peak bloom stage, stomatal conductance (422.58 μmol H2O m-2 sec-1) and transpiration rate (4.89 mmol H2O m-2sec-1) at boll formation stage.While in closer spacings early square formation and flowering was observed, but dry matter partitioning was slower and total biomass production was significantly low (78.6gm) and consequently the boll weight was less (3.2gm) leading to decreased economic yield. The effect of plant density on leaf area index is additive and varied with plant density from about 4.24- 5.78. Even though the density of plants was increased there is seldom increment in kapas yield as the partitioning is affected due to decrease in leaf CO2 exchange rates.
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Claims 12
Claim · model-written summary
Wider spacing produced significantly higher growth attributes like boll number (26.3) sympodia (12.4), leaf photosynthetic rate (26.25 μmol m-2 sec-1) at peak bloom stage, stomatal conductance (422.58 μmol H2O m-2 sec-1) and transpiration rate (4.89 mmol H2O m-2sec-1) at boll formation stage.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- Wider spacinge0
- Outcome
- boll numbere0
- Direction
- highere0
- Value
- 26.3e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wider spacing produced significantly higher growth attributes like boll number (26.3) sympodia (12.4), leaf photosynthetic rate (26.25 μmol m-2 sec-1) at peak bloom stage, stomatal conductance (422.58 μmol H2O m-2 sec-1) and transpiration rate (4.89 mmol H2O m-2sec-1) at boll formation stage.”
t0“Cotton”
Claim · model-written summary
Wider spacing produced significantly higher growth attributes like boll number (26.3) sympodia (12.4), leaf photosynthetic rate (26.25 μmol m-2 sec-1) at peak bloom stage, stomatal conductance (422.58 μmol H2O m-2 sec-1) and transpiration rate (4.89 mmol H2O m-2sec-1) at boll formation stage.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Wider spacinge0
- Outcome
- sympodiae0
- Direction
- highere0
- Value
- 12.4e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wider spacing produced significantly higher growth attributes like boll number (26.3) sympodia (12.4), leaf photosynthetic rate (26.25 μmol m-2 sec-1) at peak bloom stage, stomatal conductance (422.58 μmol H2O m-2 sec-1) and transpiration rate (4.89 mmol H2O m-2sec-1) at boll formation stage.”
t0“Cotton”
Claim · model-written summary
Wider spacing produced significantly higher growth attributes like boll number (26.3) sympodia (12.4), leaf photosynthetic rate (26.25 μmol m-2 sec-1) at peak bloom stage, stomatal conductance (422.58 μmol H2O m-2 sec-1) and transpiration rate (4.89 mmol H2O m-2sec-1) at boll formation stage.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- peak bloom stagee0
- Treatment
- Wider spacinge0
- Outcome
- leaf photosynthetic ratee0
- Direction
- highere0
- Value
- 26.25 μmol m-2 sec-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wider spacing produced significantly higher growth attributes like boll number (26.3) sympodia (12.4), leaf photosynthetic rate (26.25 μmol m-2 sec-1) at peak bloom stage, stomatal conductance (422.58 μmol H2O m-2 sec-1) and transpiration rate (4.89 mmol H2O m-2sec-1) at boll formation stage.”
t0“Cotton”
Claim · model-written summary
Wider spacing produced significantly higher growth attributes like boll number (26.3) sympodia (12.4), leaf photosynthetic rate (26.25 μmol m-2 sec-1) at peak bloom stage, stomatal conductance (422.58 μmol H2O m-2 sec-1) and transpiration rate (4.89 mmol H2O m-2sec-1) at boll formation stage.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Wider spacinge0
- Outcome
- stomatal conductancee0
- Direction
- highere0
- Value
- 422.58 μmol H2O m-2 sec-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wider spacing produced significantly higher growth attributes like boll number (26.3) sympodia (12.4), leaf photosynthetic rate (26.25 μmol m-2 sec-1) at peak bloom stage, stomatal conductance (422.58 μmol H2O m-2 sec-1) and transpiration rate (4.89 mmol H2O m-2sec-1) at boll formation stage.”
t0“Cotton”
Claim · model-written summary
Wider spacing produced significantly higher growth attributes like boll number (26.3) sympodia (12.4), leaf photosynthetic rate (26.25 μmol m-2 sec-1) at peak bloom stage, stomatal conductance (422.58 μmol H2O m-2 sec-1) and transpiration rate (4.89 mmol H2O m-2sec-1) at boll formation stage.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Wider spacinge0
- Outcome
- transpiration ratee0
- Direction
- highere0
- Value
- 4.89 mmol H2O m-2sec-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wider spacing produced significantly higher growth attributes like boll number (26.3) sympodia (12.4), leaf photosynthetic rate (26.25 μmol m-2 sec-1) at peak bloom stage, stomatal conductance (422.58 μmol H2O m-2 sec-1) and transpiration rate (4.89 mmol H2O m-2sec-1) at boll formation stage.”
t0“Cotton”
Claim · model-written summary
in closer spacings early square formation and flowering was observed
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- closer spacingse0
- Outcome
- early square formation and floweringe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in closer spacings early square formation and flowering was observed”
t0“Cotton”
Claim · model-written summary
but dry matter partitioning was slower and total biomass production was significantly low (78.6gm) and consequently the boll weight was less (3.2gm) leading to decreased economic yield.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- closer spacingse1
- Outcome
- dry matter partitioninge0
- Direction
- slowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but dry matter partitioning was slower and total biomass production was significantly low (78.6gm) and consequently the boll weight was less (3.2gm) leading to decreased economic yield.”
t0“Cotton”
e1“in closer spacings early square formation and flowering was observed”
Claim · model-written summary
total biomass production was significantly low (78.6gm)
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- closer spacingse1
- Outcome
- total biomass productione0
- Direction
- lowe0
- Value
- 78.6gme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total biomass production was significantly low (78.6gm)”
t0“Cotton”
e1“in closer spacings early square formation and flowering was observed”
Claim · model-written summary
the boll weight was less (3.2gm)
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- closer spacingse1
- Outcome
- boll weighte0
- Direction
- lesse0
- Value
- 3.2gme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the boll weight was less (3.2gm)”
t0“Cotton”
e1“in closer spacings early square formation and flowering was observed”
Claim · model-written summary
leading to decreased economic yield.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- closer spacingse1
- Outcome
- economic yielde0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leading to decreased economic yield.”
t0“Cotton”
e1“in closer spacings early square formation and flowering was observed”
Claim · model-written summary
The effect of plant density on leaf area index is additive and varied with plant density from about 4.24- 5.78.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- plant densitye0
- Outcome
- leaf area indexe0
- Direction
- variede0
- Value
- 4.24- 5.78e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of plant density on leaf area index is additive and varied with plant density from about 4.24- 5.78.”
t0“Cotton”
Claim · model-written summary
Even though the density of plants was increased there is seldom increment in kapas yield as the partitioning is affected due to decrease in leaf CO2 exchange rates.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- density of plants was increasede0
- Outcome
- kapas yielde0
- Direction
- seldom incremente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Even though the density of plants was increased there is seldom increment in kapas yield as the partitioning is affected due to decrease in leaf CO2 exchange rates.”
t0“Cotton”
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density · physiology: photosynthesis · Gossypium hirsutum (cotton)Positive and negative results
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See all 171 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.