Abstract
Olive tree is one of the most tolerant species to water stress. The experiment was carried out in Italy on ive olive cultivars: Ascolana tenera, Nocellara del Belice, Itrana Maiatica e Kalamata. Four irrigation treatments were compared: a not irrigated control, a treatment fully irrigated during all season and two deicit irrigation levels that received an amount of water of 33 and 66% of ETc from pit hardening stage to fruit veraison. Results showed that a complete replacement of ETc would result in an averaged yield increase of 20% in comparison with 66%, though applying up to two times the seasonal water amount. So starting irrigation at the pit hardening stage supplying the crop with an amount of water of 66% of ETc is feasible for a water saving strategy in this experimental environment. The yield increase was primarily due to the higher fruit weight according to the enhancement in irrigation volume. Yield of the two years was ‘off’ for all cultivars probably for the high density of plantation that caused dificulties in air circulation. Plantation density was planned under the hypothesis to cut one plant after another within the row after 15–18 years to obtain a inal density of 277 plant ha-1. After 15 years of growth this hypothesis become reasonable.
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Claims 6
Claim · model-written summary
Full ETc replacement increased olive yield by 20% relative to 66% ETc.
- Taxon
- olive trees (Olea europaea L.)
Olea europaeat0 - Treatment
- complete replacement of ETce0
- Outcome
- yielde0
- Direction
- increasee0
- Value
- 20%e0
- Qualifier
- up to two times the seasonal water amounte0
- Comparator
- 66%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results showed that a complete replacement of ETc would result in an averaged yield increase of 20% in comparison with 66%, though applying up to two times the seasonal water amount.”
t0“olive trees (Olea europaea L.)”
Claim · model-written summary
Starting irrigation at pit hardening with 66% ETc was judged feasible for water saving.
- Taxon
- olive trees (Olea europaea L.)Olea europaeat0
- Outcome
- starting irrigation at the pit hardening stage supplying the crop with an amount of water of 66% of ETce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“So starting irrigation at the pit hardening stage supplying the crop with an amount of water of 66% of ETc is feasible for a water saving strategy in this experimental environment.”
t0“olive trees (Olea europaea L.)”
Claim · model-written summary
Greater irrigation volume increased fruit weight, contributing to yield increase.
- Taxon
- olive trees (Olea europaea L.)Olea europaeat0
- Treatment
- enhancement in irrigation volumee0
- Outcome
- fruit weighte0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield increase was primarily due to the higher fruit weight according to the enhancement in irrigation volume.”
t0“olive trees (Olea europaea L.)”
Claim · model-written summary
Yield was off in both years for all cultivars.
- Taxon
- olive trees (Olea europaea L.)Olea europaeat0
- Outcome
- Yielde0
- Direction
- ‘off’e0
- Qualifier
- all cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield of the two years was ‘off’ for all cultivars probably for the high density of plantation that caused dificulties in air circulation.”
t0“olive trees (Olea europaea L.)”
Claim · model-written summary
High planting density was proposed to cause poor air circulation and off yields.
- Taxon
- olive trees (Olea europaea L.)Olea europaeat0
- Outcome
- Yielde0
- Qualifier
- high density of plantation that caused dificulties in air circulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield of the two years was ‘off’ for all cultivars probably for the high density of plantation that caused dificulties in air circulation.”
t0“olive trees (Olea europaea L.)”
Claim · model-written summary
After 15 years the proposed thinning to 277 plants per hectare appeared reasonable.
- Taxon
- olive trees (Olea europaea L.)Olea europaeat0
- Outcome
- this hypothesis become reasonablee0
- Value
- 277 plant ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plantation density was planned under the hypothesis to cut one plant after another within the row after 15–18 years to obtain a inal density of 277 plant ha-1. After 15 years of growth this hypothesis become reasonable.”
t0“olive trees (Olea europaea L.)”
The same questions in other papers
irrigation · yield · Olea europaea (common olive)Results differ
25 papers in the same direction as this paper · 24 in the opposite direction · 3 reporting no difference from an alternative
- positive
- negative
- no effect
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.