Abstract
This work examines the long-term effects of deficit-irrigation (DI) practices in almond crop (Prunus dulcis Mill.) in agronomical and physiological terms. The trial was conducted during four-year monitoring period (2014–2017), in an experimental orchard (SW Spain), subjected to three irrigation regimes; i) a full-irrigation treatment (FI), which received 100% of crop evapotranspiration (ETC); ii) a regulated-deficit irrigation (RDI50), which received 50% of ETC during the kernel-filling period; and iii) a low-frequency deficit irrigation (LFDI), that was subjected to continuous periods of irrigation-restriction defined in terms of threshold values of leaf-water potential (Ψleaf) during the kernel-filling period. During the water stress period, there were monitored Ψleaf, stomatal conductance (gs) and canopy temperature (TC). Significant improvements in terms of water-use efficiency were found, as no differences in terms of yield between FI and LFDI were found, leading to the conclusion that significant water savings (between 27 and 40%) can be achieved without compromising the yield. Moreover, threshold values of Ψleaf and thermal indicators were defined which will allow establishing future irrigation scheduling without compromising almond yield, especially when DI strategies are being applied.
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Claims 4
Claim · model-written summary
LFDI improved water-use efficiency.
- Taxon
- almond
Prunus dulcist0 - Treatment
- low-frequency deficit irrigatione1
- Outcome
- water-use efficiencye0
- Direction
- improvementse0
- Comparator
- FIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant improvements in terms of water-use efficiency were found, as no differences in terms of yield between FI and LFDI were found”
e1“a low-frequency deficit irrigation (LFDI)”
t0“almond (Prunus dulcis Mill.)”
Claim · model-written summary
LFDI and FI had no reported yield difference.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no differences in terms of yield between FI and LFDI were found”
t0“almond (Prunus dulcis Mill.)”
Claim · model-written summary
Deficit irrigation achieved water savings of 27 to 40% without compromising yield.
- Taxon
- almondPrunus dulcise1
- Treatment
- deficit-irrigation (DI)e1
- Outcome
- water savingse0
- Direction
- savingse0
- Value
- between 27 and 40%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant water savings (between 27 and 40%) can be achieved without compromising the yield”
e1“deficit-irrigation (DI) practices in almond crop (Prunus dulcis Mill.)”
Claim · model-written summary
The authors defined leaf-water-potential thresholds and thermal indicators for future irrigation scheduling.
- Taxon
- almondPrunus dulcist0
- Outcome
- threshold values of Ψleaf and thermal indicatorse0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“threshold values of Ψleaf and thermal indicators were defined which will allow establishing future irrigation scheduling without compromising almond yield”
t0“almond (Prunus dulcis Mill.)”
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See all 25 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.