Abstract
The use of modern irrigation systems and monitoring of soil water status can help improve crop performance and water use efficiency. The influence of different irrigation treatments on soil water content dynamics and olive oil yield was studied over two growing seasons using a surface drip irrigation system in an olive grove in northern Mediterranean climate. Irrigation treatments included optimal irrigation, sustained deficit irrigation (33 % of optimal irrigation), and rainfed treatment. Based on the water applied, we calculated the percentage of replenished estimated evapotranspiration (ETc*) for each treatment using the Penman-Monteith method. Soil water content dynamics were monitored with capacitive probes at five depths (10 to 50 cm). The increase in soil water content at a depth of 30 to 50 cm, which was only achieved with optimal irrigation, resulted in a significantly higher olive oil yield. In contrast, deficit irrigation, despite the addition of water, did not lead to an increase in soil water in the layers below 30 cm, so that the yield was equal to that of rainfed treatment. In irrigated olive groves, it is beneficial to monitor the water content of the soil at several depths to ensure that a sufficient amount of water has been applied.
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Claims 5
Claim · model-written summary
Only optimal irrigation raised soil water content at 30 to 50 cm.
- Taxon
- olive
Olea europaeat0 - Treatment
- optimal irrigatione0
- Outcome
- soil water contente0
- Direction
- increasee0
- Qualifier
- at a depth of 30 to 50 cme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase in soil water content at a depth of 30 to 50 cm, which was only achieved with optimal irrigation”
t0“olive”
Claim · model-written summary
Optimal irrigation produced significantly higher olive oil yield when deeper soil water increased.
- Taxon
- oliveOlea europaeae0
- Treatment
- optimal irrigatione0
- Outcome
- olive oil yielde0
- Direction
- highere0
- Qualifier
- soil water content at a depth of 30 to 50 cme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase in soil water content at a depth of 30 to 50 cm, which was only achieved with optimal irrigation, resulted in a significantly higher olive oil yield.”
Claim · model-written summary
Deficit irrigation did not increase soil water below 30 cm.
- Taxon
- oliveOlea europaeat0
- Treatment
- deficit irrigatione0
- Outcome
- soil water in the layers below 30 cme0
- Direction
- did not lead to an increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“deficit irrigation, despite the addition of water, did not lead to an increase in soil water in the layers below 30 cm”
t0“olive”
Claim · model-written summary
Deficit irrigation yielded the same as rainfed treatment.
- Taxon
- oliveOlea europaeat0
- Treatment
- deficit irrigatione0
- Outcome
- yielde0
- Direction
- equal toe0
- Comparator
- rainfed treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“deficit irrigation, despite the addition of water, did not lead to an increase in soil water in the layers below 30 cm, so that the yield was equal to that of rainfed treatment.”
t0“olive”
Claim · model-written summary
The authors recommend monitoring soil water at several depths in irrigated olive groves.
- Taxon
- oliveOlea europaeae0
- Outcome
- monitor the water content of the soil at several depthse0
- Qualifier
- to ensure that a sufficient amount of water has been appliede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In irrigated olive groves, it is beneficial to monitor the water content of the soil at several depths to ensure that a sufficient amount of water has been applied.”
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