Abstract
ABSTRACT Water availability represents the main environmental limitation in arid and semi‐arid agro‐ecosystems. In these regions, irrigation water is a scarce and expensive resource for apple and other horticultural production systems. The north‐central part of Mexico, where 70% (≈ 44 thousand hectares) of apples are grown, is such a semi‐arid system. The objective of this research was to determine the impact of partial rootzone drying (PRD) on tree physiology, yield, water use efficiency (WUE), and irrigation water use efficiency of ‘Golden Delicious’ apple trees growing in a semi‐arid region. Treatments were commercial irrigation (CI, as control) and PRD (50% of the irrigation water supplied to CI). The PRD trees had slightly reduced leaf xylem water potential, stomatal conductance, and transpiration rate. Yield, fruit size and quality, vegetative growth, and pruning weight were not modified by the irrigation treatments. Over three years, average WUE increased by 51% under PRD irrigation and water savings were ≈ 3, 240 m 3 water per hectare. Therefore, PRD is a potential irrigation technique to make apple production sustainable not only in the semi‐arid regions of Mexico, but also in other regions where water resources are becoming insufficient. Copyright © 2011 John Wiley & Sons, Ltd.
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Claims 6
Claim · model-written summary
PRD slightly reduced apple leaf xylem water potential, stomatal conductance, and transpiration rate.
- Taxon
- apple
Malus domesticae1 - Material
- ‘Golden Delicious’e1
- Treatment
- PRDe0
- Outcome
- leaf xylem water potential, stomatal conductance, and transpiration ratee0
- Direction
- reducede0
- Comparator
- commercial irrigation (CI, as control)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The PRD trees had slightly reduced leaf xylem water potential, stomatal conductance, and transpiration rate”
e1“‘Golden Delicious’ apple trees”
e2“commercial irrigation (CI, as control)”
Claim · model-written summary
PRD did not modify apple yield, fruit size, or fruit quality relative to commercial irrigation.
- Taxon
- appleMalus domesticae3
- Treatment
- PRDe1
- Outcome
- Yield, fruit size and qualitye0
- Direction
- not modifiede0
- Comparator
- commercial irrigation (CI, as control)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield, fruit size and quality, vegetative growth, and pruning weight were not modified by the irrigation treatments”
e1“PRD (50% of the irrigation water supplied to CI)”
e2“commercial irrigation (CI, as control)”
e3“‘Golden Delicious’ apple trees”
Claim · model-written summary
PRD did not modify apple vegetative growth or pruning weight.
- Taxon
- appleMalus domesticae3
- Treatment
- PRDe1
- Outcome
- vegetative growth, and pruning weighte0
- Direction
- not modifiede0
- Comparator
- commercial irrigation (CI, as control)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield, fruit size and quality, vegetative growth, and pruning weight were not modified by the irrigation treatments”
e1“PRD (50% of the irrigation water supplied to CI)”
e2“commercial irrigation (CI, as control)”
e3“‘Golden Delicious’ apple trees”
Claim · model-written summary
Over three years PRD increased mean apple water use efficiency by 51%.
- Taxon
- appleMalus domesticae1
- Treatment
- PRD irrigatione0
- Outcome
- average WUEe0
- Direction
- increasede0
- Value
- 51%e0
- Qualifier
- Over three yearse0
- Comparator
- commercial irrigation (CI, as control)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Over three years, average WUE increased by 51% under PRD irrigation”
e1“apple trees”
e2“commercial irrigation (CI, as control)”
Claim · model-written summary
PRD saved approximately 3,240 cubic metres of water per hectare.
- Taxon
- appleMalus domesticae1
- Treatment
- PRD irrigatione2
- Outcome
- water savingse0
- Direction
- savingse0
- Value
- ≈ 3, 240 m 3 water per hectaree0
- Comparator
- commercial irrigation (CI, as control)e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water savings were ≈ 3, 240 m 3 water per hectare”
e1“apple trees”
e2“PRD irrigation”
e3“commercial irrigation (CI, as control)”
Claim · model-written summary
The authors consider PRD a potentially sustainable technique for apple production where water is scarce.
- Taxon
- appleMalus domesticae0
- Outcome
- potential irrigation technique to make apple production sustainablee0
- Setting
- semi‐arid regions of Mexicoe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PRD is a potential irrigation technique to make apple production sustainable not only in the semi‐arid regions of Mexico, but also in other regions where water resources are becoming insufficient”
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See all 38 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.