Abstract
Abstract Seaweed extracts are proven to increase productivity in many agricultural crops, but there is limited research on their use in avocado production. Therefore, we evaluated the effectiveness of a seaweed extract from Durvillaea potatorum and Ascophyllum nodosum on avocado yield, revenue and post-harvest fruit quality in a series of field experiments in Australia, and on seedling root growth in a pot experiment. The field experiments were conducted on commercial farms across three different locations in northern Queensland over four years and utilised avocado trees with different ages, cultivars (Hass and Shepard) and inoculum pressures from Phytophthora cinnamomi . Results showed that the application of the seaweed extract by fertigation significantly improved avocado yield (kg fruit per tree) by 38%, fruit firmness by 4% (skin) and 22% (flesh) and fruit skin colour by 1° (hue), and an upgraded visual ripeness score. The increases in yield were associated with greater number of fruits per tree (up to 42%) indicating the liquid seaweed extract improved fruit set and retention per tree. Regular soil application of the seaweed extract to young trees (cv. Hass) in pots increased the root fresh weight by 22%. Overall, the regular application of the seaweed extract to avocado trees was found to be practical and economically viable for improving fruit production and post-harvest quality in Australian orchards.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Fertigation with seaweed extract significantly improved avocado yield by 38%.
- Taxon
- avocado
Persea americanae1 - Treatment
- application of the seaweed extract by fertigatione1
- Outcome
- avocado yield (kg fruit per tree)e1
- Direction
- improvede1
- Value
- 38%e1
- Setting
- northern Queenslande2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the application of the seaweed extract by fertigation significantly improved avocado yield (kg fruit per tree) by 38%”
e2“commercial farms across three different locations in northern Queensland”
Claim · model-written summary
Seaweed extract improved avocado fruit firmness of the skin by 4%.
- Taxon
- avocadoPersea americanae1
- Organ / stage
- skine2
- Treatment
- application of the seaweed extract by fertigatione1
- Outcome
- fruit firmnesse2
- Direction
- improvede1
- Value
- 4%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the application of the seaweed extract by fertigation significantly improved avocado yield (kg fruit per tree) by 38%”
e2“fruit firmness by 4% (skin) and 22% (flesh)”
t0“on avocado root growth”
Claim · model-written summary
Seaweed extract improved avocado fruit firmness of the flesh by 22%.
- Taxon
- avocadoPersea americanae1
- Organ / stage
- fleshe2
- Treatment
- application of the seaweed extract by fertigatione1
- Outcome
- fruit firmnesse2
- Direction
- improvede1
- Value
- 22%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the application of the seaweed extract by fertigation significantly improved avocado yield (kg fruit per tree) by 38%”
e2“fruit firmness by 4% (skin) and 22% (flesh)”
t0“on avocado root growth”
Claim · model-written summary
Seaweed extract improved avocado fruit skin colour by 1° hue.
- Taxon
- avocadoPersea americanae1
- Treatment
- application of the seaweed extract by fertigatione1
- Outcome
- fruit skin coloure2
- Direction
- improvede1
- Value
- 1° (hue)e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the application of the seaweed extract by fertigation significantly improved avocado yield (kg fruit per tree) by 38%”
e2“fruit skin colour by 1° (hue)”
t0“on avocado root growth”
Claim · model-written summary
Seaweed extract upgraded the visual ripeness score of avocado fruit.
- Taxon
- avocadoPersea americanae1
- Treatment
- application of the seaweed extract by fertigatione1
- Outcome
- visual ripeness scoree2
- Direction
- upgradede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the application of the seaweed extract by fertigation significantly improved avocado yield (kg fruit per tree) by 38%”
e2“an upgraded visual ripeness score”
t0“on avocado root growth”
Claim · model-written summary
Yield increases in avocado were associated with a greater number of fruits per tree, up to 42%.
- Taxon
- avocadoPersea americanae1
- Treatment
- liquid seaweed extracte3
- Outcome
- number of fruits per treee2
- Direction
- greatere2
- Value
- up to 42%e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the application of the seaweed extract by fertigation significantly improved avocado yield (kg fruit per tree) by 38%”
e2“The increases in yield were associated with greater number of fruits per tree (up to 42%)”
e3“indicating the liquid seaweed extract improved fruit set and retention per tree”
t0“on avocado root growth”
Claim · model-written summary
The liquid seaweed extract appears to improve fruit set and retention in avocado.
- Taxon
- avocadoPersea americanae1
- Treatment
- liquid seaweed extracte2
- Outcome
- fruit set and retention per treee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the application of the seaweed extract by fertigation significantly improved avocado yield (kg fruit per tree) by 38%”
e2“indicating the liquid seaweed extract improved fruit set and retention per tree”
t0“on avocado root growth”
Claim · model-written summary
Regular soil application of seaweed extract increased the root fresh weight of young avocado trees in pots by 22%.
- Taxon
- avocadoPersea americanat0
- Material
- cv. Hasse1
- Treatment
- Regular soil application of the seaweed extracte1
- Outcome
- root fresh weighte1
- Direction
- increasede1
- Value
- 22%e1
- Setting
- potse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Regular soil application of the seaweed extract to young trees (cv. Hass) in pots increased the root fresh weight by 22%”
t0“on avocado root growth”
Claim · model-written summary
Regular seaweed extract application was found practical and economically viable for improving avocado fruit production and post-harvest quality.
- Taxon
- avocadoPersea americanae1
- Treatment
- regular application of the seaweed extracte1
- Outcome
- practical and economically viable for improving fruit production and post-harvest qualitye1
- Setting
- Australian orchardse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Overall, the regular application of the seaweed extract to avocado trees was found to be practical and economically viable for improving fruit production and post-harvest quality in Australian orchards”
The same questions in other papers
application · growth · Persea americana (avocado)Positive and negative results
6 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
5 papers more in this group
See all 9 papers →fertilization · yield · Persea americana (avocado)Positive and negative results
9 papers in the same direction as this paper · 4 in the opposite direction
- negative
- no effect
- no effect
10 papers more in this group
See all 14 papers →other · yield · Persea americana (avocado)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
other · growth · Persea americana (avocado)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.