Abstract
Abstract Deficit irrigation can enhance crop water productivity (CWP; yield per water applied) but requires careful management to prevent drought-like responses that limit leaf gas exchange (i.e., water-conservative responses) and compromise yield. Grafted and ungrafted melons ( Cucumis melo L.) were evaluated under three irrigation treatments: full irrigation (100 % field capacity; FC) and 70 % or 50 % deficit irrigation, based on water applied to the 100 % FC. Although deficit irrigation accentuated drought stress through the season, plants under moderate deficit irrigation (70 % FC) had similar water potential (Ψ), and only 34 and 14 % lower stomatal conductance ( g s ) and photosynthetic rate ( P n ) than the full irrigation. Under severe deficit irrigation (50 % FC), plants had 28 and 17 % lower predawn and midday Ψ than the full irrigation. The lower plant water status of the 50 % FC resulted in water conservative-responses, and a 65 and 47 % lower g s and P n than the 100 % FC. Yield of the 100 and 70 % FC treatments were affected by evapotranspiration demands (i.e., irrigation × year interaction), while the 50 % FC had a 40 % lower yield than the full irrigation. Moderate deficit irrigation reduced water applied by 25 % and had either a similar or a 47 % increase in CWP compared to the full irrigation. Overall, grafting improved yield by 14 %, but it was greater under full irrigation and low environmental stress. Overall, melon crop performance was maintained under a constant, moderate deficit irrigation, and this should be considered as an effective water-saving strategy for melons to cope with long-season droughts.
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Claims 12
Claim · model-written summary
At 70 % FC, stomatal conductance was 34 % lower than under full irrigation.
- Taxon
- melons
.jpg?width=60)
Cucumis melot0 - Treatment
- 70 % FCe0
- Outcome
- stomatal conductancee0
- Direction
- lowere0
- Value
- 34 and 14 %e0
- Comparator
- full irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“plants under moderate deficit irrigation (70 % FC) had similar water potential (Ψ), and only 34 and 14 % lower stomatal conductance ( g s ) and photosynthetic rate ( P n ) than the full irrigation”
t0“cantaloupe melons”
Claim · model-written summary
At 70 % FC, photosynthetic rate was 14 % lower than under full irrigation.
- Taxon
- melonsCucumis melot0
- Treatment
- 70 % FCe0
- Outcome
- photosynthetic ratee0
- Direction
- lowere0
- Value
- 14 %e0
- Comparator
- full irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants under moderate deficit irrigation (70 % FC) had similar water potential (Ψ), and only 34 and 14 % lower stomatal conductance ( g s ) and photosynthetic rate ( P n ) than the full irrigation”
t0“cantaloupe melons”
Claim · model-written summary
At 70 % FC, water potential was similar to full irrigation.
- Taxon
- melonsCucumis melot0
- Treatment
- 70 % FCe0
- Outcome
- water potentiale0
- Direction
- similare0
- Comparator
- full irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants under moderate deficit irrigation (70 % FC) had similar water potential (Ψ), and only 34 and 14 % lower stomatal conductance ( g s ) and photosynthetic rate ( P n ) than the full irrigation”
t0“cantaloupe melons”
Claim · model-written summary
At 50 % FC, predawn water potential was 28 % lower than under full irrigation.
- Taxon
- melonsCucumis melot0
- Treatment
- 50 % FCe0
- Outcome
- predawne0
- Direction
- lowere0
- Value
- 28 and 17 %e0
- Comparator
- full irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under severe deficit irrigation (50 % FC), plants had 28 and 17 % lower predawn and midday Ψ than the full irrigation”
t0“cantaloupe melons”
Claim · model-written summary
At 50 % FC, midday water potential was 17 % lower than under full irrigation.
- Taxon
- melonsCucumis melot0
- Treatment
- 50 % FCe0
- Outcome
- midday Ψe0
- Direction
- lowere0
- Value
- 17 %e0
- Comparator
- full irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under severe deficit irrigation (50 % FC), plants had 28 and 17 % lower predawn and midday Ψ than the full irrigation”
t0“cantaloupe melons”
Claim · model-written summary
At 50 % FC, stomatal conductance was 65 % lower than at 100 % FC.
- Taxon
- melonsCucumis melot0
- Treatment
- 50 % FCe0
- Outcome
- g se0
- Direction
- lowere0
- Value
- 65 and 47 %e0
- Comparator
- 100 % FCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lower plant water status of the 50 % FC resulted in water conservative-responses, and a 65 and 47 % lower g s and P n than the 100 % FC”
t0“cantaloupe melons”
Claim · model-written summary
At 50 % FC, photosynthetic rate was 47 % lower than at 100 % FC.
- Taxon
- melonsCucumis melot0
- Treatment
- 50 % FCe0
- Outcome
- P ne0
- Direction
- lowere0
- Value
- 47 %e0
- Comparator
- 100 % FCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lower plant water status of the 50 % FC resulted in water conservative-responses, and a 65 and 47 % lower g s and P n than the 100 % FC”
t0“cantaloupe melons”
Claim · model-written summary
At 50 % FC, yield was 40 % lower than under full irrigation.
- Taxon
- melonsCucumis melot0
- Treatment
- 50 % FCe0
- Outcome
- yielde0
- Direction
- lowere0
- Value
- 40 %e0
- Comparator
- full irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 50 % FC had a 40 % lower yield than the full irrigation”
t0“cantaloupe melons”
Claim · model-written summary
At moderate deficit irrigation, water applied fell by 25 %.
- Taxon
- melonsCucumis melot0
- Treatment
- Moderate deficit irrigatione0
- Outcome
- water appliede0
- Direction
- reducede0
- Value
- 25 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moderate deficit irrigation reduced water applied by 25 %”
t0“cantaloupe melons”
Claim · model-written summary
At moderate deficit irrigation, crop water productivity was similar or 47 % higher than under full irrigation.
- Taxon
- melonsCucumis melot0
- Treatment
- Moderate deficit irrigatione0
- Outcome
- CWPe0
- Direction
- increasee0
- Value
- 47 %e0
- Comparator
- full irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moderate deficit irrigation reduced water applied by 25 % and had either a similar or a 47 % increase in CWP compared to the full irrigation”
t0“cantaloupe melons”
Claim · model-written summary
Grafting improved yield by 14 %, especially under full irrigation and low stress.
- Taxon
- melonsCucumis melot0
- Treatment
- graftinge0
- Outcome
- yielde0
- Direction
- improvede0
- Value
- 14 %e0
- Qualifier
- full irrigation and low environmental stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overall, grafting improved yield by 14 %, but it was greater under full irrigation and low environmental stress”
t0“cantaloupe melons”
Claim · model-written summary
Moderate deficit irrigation is recommended as a water-saving strategy for melons.
- Taxon
- melonsCucumis meloe0
- Outcome
- effective water-saving strategye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overall, melon crop performance was maintained under a constant, moderate deficit irrigation, and this should be considered as an effective water-saving strategy for melons to cope with long-season droughts”
The same questions in other papers
grafting · yield · Cucumis melo (muskmelon)Results differ
29 papers in the same direction as this paper · 4 in the opposite direction
- negative
- no effect
- negative
30 papers more in this group
See all 34 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.