Abstract
The increase of drought periods implies that olive orchards could suffer severe water stress conditions for several years which could limit yield response when irrigation resumes. The aim of this work was to describe in olive trees the long-term effect of 4 years of drought on the first season of irrigation. The experiment was performed in Seville (Spain) during the 2024 season in a 6-year–old hedgerow olive orchard (cv Manzanilla de Sevilla). The irrigation treatments were: Control, full irrigation; Regulated deficit irrigation (RDI), with a period of water stress during pit hardening, and Recovery, irrigated as RDI after a four drought seasons. Several measurements of fruit development, water status and vegetative growth were determined. Water relations data suggested that Recovery trees had no physiological limitations due to the previous drought periods. The number of inflorescences was reduced in the Recovery treatment, but this was related to previous season conditions and was not a long-term effect. Recovery trees decreased yield amount but not quality, mainly because a crown volume lower than the Control at the beginning of the experiment. On the opposite, RDI presented the same yield as Control, with 47% less irrigation volume but similar crown volume. As a consequence, irrigation water productivity exhibited marked contrasts, with maximum values in RDI reaching 23.6 kg/m³ , better than the Control (13.4 kg/m³) and Recovery treatment (15.3 kg/m³). Maintain an optimum crown volume in period of drought would secure a fast recovery of yield when irrigation was resumed even with deficit amounts.
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Claims 10
Claim · model-written summary
Recovery trees showed no physiological limitation attributable to prior drought.
- Taxon
- olive
Olea europaeat0 - Material
- Recovery treese0
- Outcome
- no physiological limitationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water relations data suggested that Recovery trees had no physiological limitations due to the previous drought periods”
t0“olive orchards”
Claim · model-written summary
Recovery treatment reduced inflorescence number.
- Taxon
- oliveOlea europaeat0
- Treatment
- Recovery treatmente0
- Outcome
- number of inflorescencese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of inflorescences was reduced in the Recovery treatment”
t0“olive orchards”
Claim · model-written summary
Recovery trees had lower yield amount than Control.
- Taxon
- oliveOlea europaeat0
- Treatment
- Recovery treese0
- Outcome
- yield amounte0
- Direction
- decreasede0
- Qualifier
- a crown volume lower than the Control at the beginning of the experimente0
- Comparator
- Controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Recovery trees decreased yield amount but not quality, mainly because a crown volume lower than the Control at the beginning of the experiment”
t0“olive orchards”
Claim · model-written summary
Recovery trees had no reduction in quality.
- Taxon
- oliveOlea europaeat0
- Treatment
- Recovery treese0
- Outcome
- qualitye0
- Direction
- not qualitye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Recovery trees decreased yield amount but not quality”
t0“olive orchards”
Claim · model-written summary
RDI had the same yield as Control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RDI presented the same yield as Control”
t0“olive orchards”
Claim · model-written summary
RDI used 47% less irrigation volume than Control.
- Taxon
- oliveOlea europaeat0
- Treatment
- RDIe0
- Outcome
- irrigation volumee0
- Direction
- lesse0
- Value
- 47%e0
- Comparator
- Controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RDI presented the same yield as Control, with 47% less irrigation volume”
t0“olive orchards”
Claim · model-written summary
RDI attained maximum irrigation water productivity of 23.6 kg/m³.
- Taxon
- oliveOlea europaeat0
- Treatment
- RDIe0
- Outcome
- irrigation water productivitye1
- Direction
- maximume0
- Value
- 23.6 kg/m³e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum values in RDI reaching 23.6 kg/m³”
e1“irrigation water productivity exhibited marked contrasts”
t0“olive orchards”
Claim · model-written summary
Control irrigation water productivity was 13.4 kg/m³.
- Taxon
- oliveOlea europaeat0
- Treatment
- Controle0
- Outcome
- irrigation water productivitye1
- Value
- 13.4 kg/m³e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Control (13.4 kg/m³)”
e1“irrigation water productivity exhibited marked contrasts”
t0“olive orchards”
Claim · model-written summary
Recovery irrigation water productivity was 15.3 kg/m³.
- Taxon
- oliveOlea europaeat0
- Treatment
- Recovery treatmente0
- Outcome
- irrigation water productivitye1
- Value
- 15.3 kg/m³e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Recovery treatment (15.3 kg/m³)”
e1“irrigation water productivity exhibited marked contrasts”
t0“olive orchards”
Claim · model-written summary
Maintaining optimum crown volume during drought would secure rapid yield recovery after irrigation resumes.
- Taxon
- oliveOlea europaeat0
- Outcome
- Maintain an optimum crown volume in period of droughte0
- Qualifier
- even with deficit amountse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maintain an optimum crown volume in period of drought would secure a fast recovery of yield when irrigation was resumed even with deficit amounts”
t0“olive orchards”
The same questions in other papers
irrigation · yield · Olea europaea (common olive)Results differ
26 papers in the same direction as this paper · 26 in the opposite direction
- no effect
- positive
- positive
49 papers more in this group
See all 53 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.