Abstract
Abstract Increasing irrigation costs and declining water availability compel producers to adapt irrigation strategies for maximum crop yield and water use efficiency. A field trial was conducted to observe the effects of various drip irrigation ratios (IR‐0, IR‐25, IR‐50, IR‐75 and IR‐100) on water use efficiency (WUE), the irrigation water use efficiency (IWUE), lint yield, yield components and fibre quality at two upland cotton varieties during 2004 and 2005. WUE was found to increase from 0.62 to 0.71 kg m −3 as the irrigation water applied was reduced from 100 % to 75 % of soil water depletion. Deficit irrigation of cotton with drip irrigation at 75 % treatment level (IR‐75) did not decrease seed cotton yield and yield components during 2 years, with the exception of the number of bolls in 2005. Among fibre quality parameters, no significant differences in fibre length, fineness, uniformity index and elongation were detected between the 100 % and 75 % irrigation levels in 2005. The results revealed that irrigation of cotton with a drip irrigation method at 75 % level had significant benefits in terms of saved irrigation water without reducing yield, and high WUE indicated a definitive advantage of employing deficit irrigation under limited water supply conditions.
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Claims 6
Claim · model-written summary
Cutting irrigation from 100 % to 75 % of soil water depletion raised cotton WUE from 0.62 to 0.71 kg m-3 in a field trial.
- Taxon
- Gossypium hirsutum
Gossypium hirsutumt0 - Treatment
- 75 % of soil water depletione1
- Outcome
- WUEe1
- Direction
- increasee1
- Value
- 0.62 to 0.71 kg m −3e1
- Comparator
- 100 %e1
- Setting
- field triale2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Deficit Drip Irrigation Ratios on Cotton (Gossypium hirsutum L.) Yield and Fibre Quality”
e1“WUE was found to increase from 0.62 to 0.71 kg m −3 as the irrigation water applied was reduced from 100 % to 75 % of soil water depletion”
e2“A field trial was conducted to observe the effects of various drip irrigation ratios”
Claim · model-written summary
Drip irrigation at the 75 % level did not reduce seed cotton yield or yield components over two years.
- Taxon
- cottonGossypium hirsutume3
- Treatment
- drip irrigation at 75 % treatment levele3
- Outcome
- seed cotton yield and yield componentse3
- Direction
- did not decreasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Deficit Drip Irrigation Ratios on Cotton (Gossypium hirsutum L.) Yield and Fibre Quality”
e3“Deficit irrigation of cotton with drip irrigation at 75 % treatment level (IR‐75) did not decrease seed cotton yield and yield components during 2 years”
Claim · model-written summary
Drip irrigation at the 75 % level reduced the number of bolls in 2005.
- Taxon
- cottonGossypium hirsutume3
- Treatment
- drip irrigation at 75 % treatment levele3
- Outcome
- number of bollse4
- Direction
- decreaseinferrede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Deficit irrigation of cotton with drip irrigation at 75 % treatment level (IR‐75) did not decrease seed cotton yield and yield components during 2 years”
e4“with the exception of the number of bolls in 2005”
Claim · model-written summary
No significant difference in fibre length, fineness or uniformity index between 100 % and 75 % irrigation in 2005.
- Taxon
- Gossypium hirsutumGossypium hirsutumt0
- Treatment
- 75 % irrigation levelse5
- Outcome
- fibre length, fineness, uniformity indexe5
- Direction
- no significant differencese5
- Comparator
- 100 %e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Deficit Drip Irrigation Ratios on Cotton (Gossypium hirsutum L.) Yield and Fibre Quality”
e5“no significant differences in fibre length, fineness, uniformity index and elongation were detected between the 100 % and 75 % irrigation levels in 2005”
Claim · model-written summary
No significant difference in fibre elongation between 100 % and 75 % irrigation in 2005.
- Taxon
- Gossypium hirsutumGossypium hirsutumt0
- Treatment
- 75 % irrigation levelse5
- Outcome
- elongatione5
- Direction
- no significant differencese5
- Comparator
- 100 %e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Deficit Drip Irrigation Ratios on Cotton (Gossypium hirsutum L.) Yield and Fibre Quality”
e5“no significant differences in fibre length, fineness, uniformity index and elongation were detected between the 100 % and 75 % irrigation levels in 2005”
Claim · model-written summary
Drip irrigation at the 75 % level is recommended because it saves irrigation water without reducing yield.
- Taxon
- Gossypium hirsutumGossypium hirsutumt0
- Treatment
- drip irrigation method at 75 % levele6
- Outcome
- saved irrigation water without reducing yielde6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of Deficit Drip Irrigation Ratios on Cotton (Gossypium hirsutum L.) Yield and Fibre Quality”
e6“The results revealed that irrigation of cotton with a drip irrigation method at 75 % level had significant benefits in terms of saved irrigation water without reducing yield”
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