Abstract
The consumption of blueberries has increased in recent years due to their excellent flavor and high antioxidant activity, which promote human well-being and health. Several sustainable cultural practices, such as biostimulants, have been applied to increase crop performance. The pre-harvest foliar application of two doses of a biostimulant based on the macroalgae Ecklonia maxima (EM), two doses of a glycine–betaine (GB) biostimulant, and two doses of the combination of the biostimulants in ‘Duke’ and ‘Draper’ blueberry cultivars in 2022 and 2023 were studied. The application of 4 L ha−1 EM significantly increased the yield of ‘Draper’ blueberries, while the same occurred in ‘Duke’ fruits treated with 4 L ha−1 EM + 4 kg ha−1 GB. The blueberries sprayed with both doses of EM + GB were heavier and larger. ‘Duke’ fruits treated with EM were firmer and, following 4 L ha−1 EM + 4 kg ha−1 GB treatment, presented a lower concentration of organic acids, determined by HPLC, greater sensorial sweetness, and lower acidity. Therefore, these biostimulants are recommended for a more environmentally friendly production perspective, as they may increase blueberry yield and improve fruit quality.
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Claims 8
Claim · model-written summary
Four liters per hectare EM increased Draper blueberry yield significantly.
Not reportedComparator
Verbatim
e0“The application of 4 L ha−1 EM significantly increased the yield of ‘Draper’ blueberries”
Claim · model-written summary
Combined EM and GB increased Duke blueberry yield significantly.
- Taxon
- blueberryt0
- Material
- ‘Duke’e0
- Treatment
- 4 L ha−1 EM + 4 kg ha−1 GBe0
- Outcome
- yielde1
- Direction
- increasede1
Not reportedComparator
Verbatim
e0“the same occurred in ‘Duke’ fruits treated with 4 L ha−1 EM + 4 kg ha−1 GB”
t0“Blueberry”
e1“The application of 4 L ha−1 EM significantly increased the yield of ‘Draper’ blueberries”
Claim · model-written summary
Both EM plus GB doses made blueberries heavier and larger.
- Taxon
- blueberriese0
- Treatment
- both doses of EM + GBe0
- Outcome
- heavier and largere0
- Direction
- heavier and largere0
Not reportedComparator
Verbatim
e0“The blueberries sprayed with both doses of EM + GB were heavier and larger”
Claim · model-written summary
EM treated Duke fruit was firmer.
Not reportedComparator
Verbatim
e0“‘Duke’ fruits treated with EM were firmer”
t0“Blueberry”
Claim · model-written summary
Combined EM and GB lowered organic acid concentration in Duke fruit.
- Taxon
- blueberryt0
- Material
- ‘Duke’e1
- Treatment
- 4 L ha−1 EM + 4 kg ha−1 GBe0
- Outcome
- concentration of organic acidse0
- Direction
- lowere0
Not reportedComparator
Verbatim
e0“following 4 L ha−1 EM + 4 kg ha−1 GB treatment, presented a lower concentration of organic acids”
t0“Blueberry”
e1“‘Duke’ fruits treated with EM were firmer”
Claim · model-written summary
Combined EM and GB increased sensory sweetness of Duke fruit.
- Taxon
- blueberryt0
- Material
- ‘Duke’e2
- Treatment
- 4 L ha−1 EM + 4 kg ha−1 GBe2
- Outcome
- sensorial sweetnesse0
- Direction
- greatere0
Not reportedComparator
Verbatim
e0“greater sensorial sweetness”
e2“the same occurred in ‘Duke’ fruits treated with 4 L ha−1 EM + 4 kg ha−1 GB”
t0“Blueberry”
Claim · model-written summary
Combined EM and GB lowered acidity of Duke fruit.
- Taxon
- blueberryt0
- Material
- ‘Duke’e2
- Treatment
- 4 L ha−1 EM + 4 kg ha−1 GBe2
- Outcome
- aciditye0
- Direction
- lowere0
Not reportedComparator
Verbatim
e0“lower acidity”
e2“the same occurred in ‘Duke’ fruits treated with 4 L ha−1 EM + 4 kg ha−1 GB”
t0“Blueberry”
Claim · model-written summary
The authors recommend these biostimulants for blueberry production.
Verbatim
e0“these biostimulants are recommended for a more environmentally friendly production perspective, as they may increase blueberry yield and improve fruit quality”
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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.