Abstract
Due to increased occurrence and intensity of agricultural droughts in humid Mediterranean regions, monitored irrigation is becoming an increasingly inevitable element of agricultural practice. To determine the impact of different irrigation regimes on olive tree (Olea europaea L.) growth and crop yield, and of the olive oil production and biophenol content, a 3-year study was conducted in an olive grove located in a relatively humid region of southwestern Slovenia. The mean olive production from trees under full irrigation (replacement of 100% crop evapotranspiration) was significantly higher than those that were only rain fed or were under deficit irrigation (replacement of 33 and 66% crop evapotranspiration). There were no significant differences in total biophenol contents of the olive oil across these irrigation treatments. These irrigation effects can be explained according to the levels of precipitation throughout the growing season. Despite the positive effects of rainfall on these parameters, the mean olive oil yield of the rain-fed olives was about 30% lower than that for the deficit irrigation treatments.
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Claims 3
Claim · model-written summary
Full irrigation produced significantly more olives than rain feeding or deficit irrigation.
- Taxon
- Olea europaea L.
Olea europaeae1 - Treatment
- full irrigation (replacement of 100% crop evapotranspiration)e0
- Outcome
- mean olive productione0
- Direction
- highere0
- Comparator
- rain fed or were under deficit irrigation (replacement of 33 and 66% crop evapotranspiration)e0
- Setting
- southwestern Sloveniae2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mean olive production from trees under full irrigation (replacement of 100% crop evapotranspiration) was significantly higher than those that were only rain fed or were under deficit irrigation (replacement of 33 and 66% crop evapotranspiration).”
e1“olive tree (Olea europaea L.)”
e2“southwestern Slovenia”
Claim · model-written summary
Total olive oil biophenol content did not differ significantly across irrigation treatments.
- Taxon
- Olea europaea L.Olea europaeae1
- Treatment
- irrigation treatmentse0
- Outcome
- total biophenol contents of the olive oile0
- Direction
- no significant differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no significant differences in total biophenol contents of the olive oil across these irrigation treatments.”
e1“olive tree (Olea europaea L.)”
Claim · model-written summary
Rain-fed olives had about 30% less mean oil yield than deficit-irrigated olives.
- Taxon
- Olea europaea L.Olea europaeae1
- Treatment
- rain-fede0
- Outcome
- mean olive oil yielde0
- Direction
- lowere0
- Value
- about 30%e0
- Comparator
- deficit irrigation treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the mean olive oil yield of the rain-fed olives was about 30% lower than that for the deficit irrigation treatments.”
e1“olive tree (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
- negative
- no effect
- positive
49 papers more in this group
See all 53 papers →rainfall · quality: oil · Olea europaea (common olive)Results agree
1 paper in the same direction as this paper
- negative
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.