Abstract
Water is the main limiting factor for olive cultivation in rainfed conditions. In irrigated orchards, water availability is scarce mainly during drought periods. Thus, increasing irrigation efficiency is a key issue to improve water management, especially in semiarid conditions. The objective of this study was to assess different irrigation strategies on tree growth and production components during three years in a young super high-density olive orchard (Arbequina cv.) located in northeast Spain. Four deficit irrigation strategies were compared to a control strategy based on replenishing crop evapotranspiration. The four strategies were as follows: Continuous Deficit Irrigation (CDI), two Regulated Deficit Irrigation strategies (Moderate, MRDI, and Severe, SRDI), and a precision Irrigation strategy based on daily trunk growth (Precision). In the Precision strategy, olive oil production increased by 7% and the vegetative variables did not show significant reductions, resulting in an average yearly water savings of 31% compared to the control strategy. The Regulated Deficit Irrigation strategies also produced promising results based on the high average yearly water-saving rates of 19% and 29%. However, the SRDI strategy exhibited significant reductions in tree height, lateral branches growth, olive yield, and oil yield compared to the control. On the other hand, the MRDI strategy did not differ significantly in oil yield, tree height, and lateral branches growth compared to the control or Precision strategies. Similarly, the CDI strategy resulted in significantly lower tree height, lateral branches growth, and production compared to the control. Although the observed reduced growth in both SRDI and CDI strategies presents an interesting opportunity for managing excessive vigor in super high-density olive orchards, it is important to consider that this approach may compromise production in successive seasons.
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Claims 11
Claim · model-written summary
Precision irrigation increased olive oil production by 7% versus control.
- Taxon
- olive
Olea europaeat0 - Treatment
- Precision strategye0
- Outcome
- olive oil productione0
- Direction
- increasede0
- Value
- 7%e0
- Comparator
- control strategye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the Precision strategy, olive oil production increased by 7% and the vegetative variables did not show significant reductions, resulting in an average yearly water savings of 31% compared to the control strategy.”
t0“olive”
Claim · model-written summary
Precision irrigation did not significantly reduce vegetative variables versus control.
- Taxon
- oliveOlea europaeat0
- Treatment
- Precision strategye0
- Outcome
- vegetative variablese0
- Direction
- did not show significant reductionse0
- Comparator
- control strategye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the Precision strategy, olive oil production increased by 7% and the vegetative variables did not show significant reductions, resulting in an average yearly water savings of 31% compared to the control strategy.”
t0“olive”
Claim · model-written summary
Precision irrigation saved an average of 31% water annually versus control.
- Taxon
- oliveOlea europaeat0
- Treatment
- Precision strategye0
- Outcome
- water savingse0
- Direction
- savingse0
- Value
- 31%e0
- Comparator
- control strategye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the Precision strategy, olive oil production increased by 7% and the vegetative variables did not show significant reductions, resulting in an average yearly water savings of 31% compared to the control strategy.”
t0“olive”
Claim · model-written summary
One regulated deficit irrigation strategy saved 19% water yearly.
- Taxon
- oliveOlea europaeat0
- Outcome
- water-saving ratese0
- Direction
- water-savinge0
- Value
- 19%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Regulated Deficit Irrigation strategies also produced promising results based on the high average yearly water-saving rates of 19% and 29%.”
t0“olive”
Claim · model-written summary
Another regulated deficit irrigation strategy saved 29% water yearly.
- Taxon
- oliveOlea europaeat0
- Outcome
- water-saving ratese0
- Direction
- water-savinge0
- Value
- 29%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Regulated Deficit Irrigation strategies also produced promising results based on the high average yearly water-saving rates of 19% and 29%.”
t0“olive”
Claim · model-written summary
Severe regulated deficit irrigation significantly reduced tree height and lateral branch growth versus control.
- Taxon
- oliveOlea europaeae0
- Treatment
- SRDI strategye0
- Outcome
- tree height, lateral branches growthe0
- Direction
- reductionse0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the SRDI strategy exhibited significant reductions in tree height, lateral branches growth, olive yield, and oil yield compared to the control.”
Claim · model-written summary
Severe regulated deficit irrigation significantly reduced olive and oil yield versus control.
- Taxon
- oliveOlea europaeae0
- Treatment
- SRDI strategye0
- Outcome
- olive yield, and oil yielde0
- Direction
- reductionse0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the SRDI strategy exhibited significant reductions in tree height, lateral branches growth, olive yield, and oil yield compared to the control.”
Claim · model-written summary
Moderate regulated deficit irrigation showed no significant differences in oil yield, tree height, or branch growth versus control or Precision.
- Taxon
- oliveOlea europaeat0
- Treatment
- MRDI strategye0
- Outcome
- oil yield, tree height, and lateral branches growthe0
- Direction
- did not differ significantlye0
- Comparator
- control or Precision strategiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the MRDI strategy did not differ significantly in oil yield, tree height, and lateral branches growth compared to the control or Precision strategies.”
t0“olive”
Claim · model-written summary
Continuous deficit irrigation significantly reduced tree height and lateral branch growth versus control.
- Taxon
- oliveOlea europaeat0
- Treatment
- CDI strategye0
- Outcome
- tree height, lateral branches growthe0
- Direction
- lowere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the CDI strategy resulted in significantly lower tree height, lateral branches growth, and production compared to the control.”
t0“olive”
Claim · model-written summary
Continuous deficit irrigation significantly reduced production versus control.
- Taxon
- oliveOlea europaeat0
- Treatment
- CDI strategye0
- Outcome
- productione0
- Direction
- lowere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the CDI strategy resulted in significantly lower tree height, lateral branches growth, and production compared to the control.”
t0“olive”
Claim · model-written summary
Reduced growth under severe regulated and continuous deficit irrigation may manage excessive vigor but could compromise subsequent production.
- Taxon
- oliveOlea europaeae0
- Outcome
- managing excessive vigore0
- Qualifier
- may compromise production in successive seasonse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Although the observed reduced growth in both SRDI and CDI strategies presents an interesting opportunity for managing excessive vigor in super high-density olive orchards, it is important to consider that this approach may compromise production in successive seasons.”
The same questions in other papers
irrigation · growth · Olea europaea (common olive)Results differ
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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.