Abstract
Abstract Daily drip irrigation often increases yield and water‐use efficiency of cotton ( Gossypium hirsutum L.) compared to conventional irrigations applied at long intervals. A 2 yr experiment was designed to test whether these benefits could be achieved without using an expensive drip system. Cotton was irrigated every 10 d in the first year and every 14 d in the second year (control treatment). A supplemental irrigation was applied during either one or two long irrigation cycles coinciding with peak fruiting. The total amount of water applied was minimally changed from the control because other irrigations were reduced to compensate for the supplementation. Another treatment was drip‐irrigated daily throughout most of the season. One supplement increased seedcotton yield 15% over the control, and two supplements increased it 25%, compared to a 40% yield increase with drip irrigation. These three treatments increased crop water‐use efficiency (yield per unit applied water plus rainfall) by 12, 22 and 50%, respectively. Yield increases were associated with a lengthened period of profuse flowering and a delay in the onset of cutout. Both drip irrigation and mid‐cycle supplements increased midday leaf water potential and apparent hydraulic conductance of the plants for an extended period during fruiting, indicating enhanced water uptake and transport capacity compared to plants on long cycles. The results show that a drip system is not necessary for substantial improvements of yield and water‐use efficiency. Doubling the number of irrigations for a short period during peak fruiting achieved much of the benefits of drip irrigation.
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Claims 8
Claim · model-written summary
One supplemental irrigation raised seedcotton yield 15% over control.
- Taxon
- Cotton
Gossypium hirsutumt0 - Treatment
- One supplemente0
- Outcome
- seedcotton yielde0
- Direction
- increasede0
- Value
- 15%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One supplement increased seedcotton yield 15% over the control”
t0“Cotton”
Claim · model-written summary
Two supplements raised seedcotton yield 25% over control.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two supplements increased it 25%”
t0“Cotton”
Claim · model-written summary
Drip irrigation raised seedcotton yield 40%.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- drip irrigatione0
- Outcome
- yielde0
- Direction
- increasee0
- Value
- 40%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a 40% yield increase with drip irrigation”
t0“Cotton”
Claim · model-written summary
One supplement raised crop water-use efficiency 12%.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Frequent Irrigationst0
- Outcome
- crop water‐use efficiencye0
- Direction
- increasede0
- Value
- 12e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These three treatments increased crop water‐use efficiency (yield per unit applied water plus rainfall) by 12, 22 and 50%, respectively”
t0“Yield Enhancement in Cotton by Frequent Irrigations during Fruiting”
Claim · model-written summary
Two supplements raised crop water-use efficiency 22%.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Frequent Irrigationst0
- Outcome
- crop water‐use efficiencye0
- Direction
- increasede0
- Value
- 22e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These three treatments increased crop water‐use efficiency (yield per unit applied water plus rainfall) by 12, 22 and 50%, respectively”
t0“Yield Enhancement in Cotton by Frequent Irrigations during Fruiting”
Claim · model-written summary
Drip irrigation raised crop water-use efficiency 50%.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Frequent Irrigationst0
- Outcome
- crop water‐use efficiencye0
- Direction
- increasede0
- Value
- 50%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These three treatments increased crop water‐use efficiency (yield per unit applied water plus rainfall) by 12, 22 and 50%, respectively”
t0“Yield Enhancement in Cotton by Frequent Irrigations during Fruiting”
Claim · model-written summary
Yield gains were associated with longer profuse flowering and delayed cutout.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- profuse floweringe0
- Outcome
- Yield increasese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield increases were associated with a lengthened period of profuse flowering and a delay in the onset of cutout”
t0“Cotton”
Claim · model-written summary
Drip and supplemental irrigation increased leaf water potential and hydraulic conductance.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- drip irrigation and mid‐cycle supplementse0
- Outcome
- midday leaf water potential and apparent hydraulic conductancee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both drip irrigation and mid‐cycle supplements increased midday leaf water potential and apparent hydraulic conductance of the plants for an extended period during fruiting”
t0“Cotton”
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See all 399 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.