Abstract
A study was conducted in the Fraser Valley of British Columbia, Canada, to determine the effects of drip configuration (one or two lines with emitters spaced every 0.3 or 0.45 m) and irrigation at moderate or heavy rates (5 or 10 L/plant) in a mature planting of ‘Duke’ highbush blueberry ( Vaccinium corymbosum L.). Results were compared with those published previously from the first 4 years after planting. Although plant size increased with irrigation rate when the plants were younger, there was no added benefit of heavy irrigation on growth in the older plants. However, the plants became more sensitive to soil water deficits with age and, therefore, unlike when they were younger, had greater yields when more water was applied. Berry size and fruit firmness were little affected by irrigation in the older plants, but antioxidants, measured as oxygen radical absorbance capacity (ORAC), were higher with than without irrigation, suggesting that irrigation has the potential to improve the health benefits of blueberries. Growth, yield, and fruit quality were unaffected by drip configuration in any year. Overall, the results revealed that the response of highbush blueberry to drip irrigation changed over time and indicated that irrigation management should be adjusted as a planting matures.
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Claims 8
Claim · model-written summary
Heavy irrigation gave no added benefit on growth of older blueberry plants
- Taxon
- highbush blueberry
Vaccinium corymbosume0 - Treatment
- heavy irrigatione1
- Outcome
- growthe1
- Direction
- no added benefite1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highbush blueberry ( Vaccinium corymbosum L.)”
e1“there was no added benefit of heavy irrigation on growth in the older plants”
Claim · model-written summary
Older blueberry plants had greater yields when more water was applied
- Taxon
- highbush blueberryVaccinium corymbosume0
- Treatment
- more water was appliede1
- Outcome
- yieldse1
- Direction
- greatere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highbush blueberry ( Vaccinium corymbosum L.)”
e1“had greater yields when more water was applied”
Claim · model-written summary
Older plants became more sensitive to soil water deficits with age
- Taxon
- highbush blueberryVaccinium corymbosume0
- Treatment
- soil water deficitse1
- Outcome
- sensitive to soil water deficitse1
- Direction
- more sensitivee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highbush blueberry ( Vaccinium corymbosum L.)”
e1“the plants became more sensitive to soil water deficits with age”
Claim · model-written summary
Berry size and fruit firmness were little affected by irrigation in older plants
- Taxon
- highbush blueberryVaccinium corymbosume0
- Treatment
- irrigatione1
- Outcome
- Berry size and fruit firmnesse1
- Direction
- little affectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highbush blueberry ( Vaccinium corymbosum L.)”
e1“Berry size and fruit firmness were little affected by irrigation in the older plants”
Claim · model-written summary
Irrigation raised antioxidant oxygen radical absorbance capacity in older blueberry fruit
- Taxon
- highbush blueberryVaccinium corymbosume0
- Treatment
- irrigatione1
- Outcome
- oxygen radical absorbance capacity (ORAC)e1
- Direction
- highere1
- Comparator
- without irrigatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highbush blueberry ( Vaccinium corymbosum L.)”
e1“antioxidants, measured as oxygen radical absorbance capacity (ORAC), were higher with than without irrigation”
Claim · model-written summary
Growth, yield and fruit quality were unaffected by drip configuration
- Taxon
- highbush blueberryVaccinium corymbosume0
- Treatment
- drip configuratione1
- Outcome
- Growth, yield, and fruit qualitye1
- Direction
- unaffectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highbush blueberry ( Vaccinium corymbosum L.)”
e1“Growth, yield, and fruit quality were unaffected by drip configuration in any year”
Claim · model-written summary
The response of highbush blueberry to drip irrigation changed over time
- Taxon
- highbush blueberryVaccinium corymbosume1
- Treatment
- drip irrigatione1
- Outcome
- response of highbush blueberry to drip irrigatione1
- Direction
- changede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highbush blueberry ( Vaccinium corymbosum L.)”
e1“the response of highbush blueberry to drip irrigation changed over time”
Claim · model-written summary
Irrigation management should be adjusted as a blueberry planting matures
- Taxon
- highbush blueberryVaccinium corymbosume0
- Outcome
- irrigation management should be adjusted as a planting maturese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highbush blueberry ( Vaccinium corymbosum L.)”
e1“irrigation management should be adjusted as a planting matures”
The same questions in other papers
irrigation · quality: postharvest · Vaccinium corymbosum (highbush blueberry)Positive and negative results
1 in the opposite direction
- positive
irrigation · growth · Vaccinium corymbosum (highbush blueberry)Positive and negative results
2 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →irrigation · quality: grain · Vaccinium corymbosum (highbush blueberry)Results agree
1 paper in the same direction as this paper
- no effect
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.