Abstract
To investigate the effect of different irrigation levels on yield and yield components of two cotton cultivar, a two-year experiment (2006-2007) was carried out at Agricultural Research Center of Kabotarabad, Isfahan, Iran. In this experiment, the strip split-plot design, as randomized complete blocks with four replications, was used. Main plots consisted of six levels of irrigation (T1 to T6, based on cumulative evaporation from Class A pan, at three growth periods of cotton) and subplots were two cotton cultivars (B557 and Tabladyla). Results indicated significant effects of irrigation level on yield. The T6 treatment (irrigation at three stages: from four-leaf stage to early flowering, flowering until boll opening, and beginning of boll opening until the end of growth, based on 150, 70 and 110 mm cumulative evaporation from Class A pan) was superior to other treatments in terms of lint yield and water use efficiency (5113 kg/ha and 0.52 kg/m3, respectively). Higher boll weight and number per plant was the main reason for significant yield advantage in this treatment. Significant difference between the two experimental cultivars and interaction of cultivar and irrigation treatments, in terms of different traits, was not observed. B557 cultivar, with 3237 kg/ha lint yield in the first harvest, produced significantly higher yield than Tabladyla cultivar, with 2481 kg/ha lint yield. The results of this study showed that deficit irrigation at vegetative growth stage (four-leaf stage to early flowering) of cotton not only led to improved yield, but also saved considerable amount of irrigation water.
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Claims 8
Claim · model-written summary
Irrigation level significantly affected yield.
- Taxon
- Cotton
Gossypium hirsutumt0 - Treatment
- irrigation levele0
- Outcome
- yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results indicated significant effects of irrigation level on yield”
t0“Cotton Cultivars”
Claim · model-written summary
T6 had superior lint yield of 5113 kg/ha.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- T6 treatmente0
- Outcome
- lint yielde0
- Direction
- superiore0
- Value
- 5113 kg/hae0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The T6 treatment (irrigation at three stages: from four-leaf stage to early flowering, flowering until boll opening, and beginning of boll opening until the end of growth, based on 150, 70 and 110 mm cumulative evaporation from Class A pan) was superior to other treatments in terms of lint yield and water use efficiency (5113 kg/ha and 0.52 kg/m3, respectively)”
t0“Cotton Cultivars”
Claim · model-written summary
T6 had superior water use efficiency of 0.52 kg/m3.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- T6 treatmente0
- Outcome
- water use efficiencye0
- Direction
- superiore0
- Value
- 0.52 kg/m3e0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The T6 treatment (irrigation at three stages: from four-leaf stage to early flowering, flowering until boll opening, and beginning of boll opening until the end of growth, based on 150, 70 and 110 mm cumulative evaporation from Class A pan) was superior to other treatments in terms of lint yield and water use efficiency (5113 kg/ha and 0.52 kg/m3, respectively)”
t0“Cotton Cultivars”
Claim · model-written summary
Higher boll weight and boll number accounted for the yield advantage of T6.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- yield advantagee0
- Qualifier
- Higher boll weight and number per plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher boll weight and number per plant was the main reason for significant yield advantage in this treatment”
t0“Cotton Cultivars”
Claim · model-written summary
Overall cultivar differences and cultivar-by-irrigation interactions were not significant.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- Significant difference between the two experimental cultivars and interaction of cultivar and irrigation treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant difference between the two experimental cultivars and interaction of cultivar and irrigation treatments, in terms of different traits, was not observed”
t0“Cotton Cultivars”
Claim · model-written summary
B557 had significantly higher first-harvest lint yield than Tabladyla.
- Taxon
- CottonGossypium hirsutumt0
- Material
- B557e0
- Outcome
- lint yielde0
- Direction
- highere0
- Value
- 3237 kg/hae0
- Qualifier
- 2481 kg/ha lint yielde0
- Comparator
- Tabladylae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B557 cultivar, with 3237 kg/ha lint yield in the first harvest, produced significantly higher yield than Tabladyla cultivar, with 2481 kg/ha lint yield”
t0“Cotton Cultivars”
Claim · model-written summary
Vegetative-stage deficit irrigation improved cotton yield.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- deficit irrigation at vegetative growth stage (four-leaf stage to early flowering)e0
- Outcome
- yielde0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“deficit irrigation at vegetative growth stage (four-leaf stage to early flowering) of cotton not only led to improved yield, but also saved considerable amount of irrigation water”
Claim · model-written summary
Vegetative-stage deficit irrigation saved considerable irrigation water.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- deficit irrigation at vegetative growth stage (four-leaf stage to early flowering)e0
- Outcome
- irrigation watere0
- Direction
- savede0
- Qualifier
- considerable amounte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“deficit irrigation at vegetative growth stage (four-leaf stage to early flowering) of cotton not only led to improved yield, but also saved considerable amount of irrigation water”
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