Abstract
The use of microalgae as natural biofertilizer in horticulture has recently been reported, while the use of humic substances is widespread. However, the combined use of microalgae with humic substances applied to plant leaves is still unexploited. Thus, the objective of this work was to combine fulvic acid (FA) with the Scenedesmus subspicatus microalga biomass (SC) as a natural biofertilizer applied via leaf in two onion cultivars in organic system. Four experiments were conducted: i) bioassays to verify the bioactive effect of FA, SC and combinations using the Vigna radiata model plant; ii) greenhouse pot experiment with foliar applications of FA, SC and combination in two onion cultivars; iii) field experiment in organic system with foliar applications of FA, SC and combination in two onion cultivars; and iv) onion bulb storage experiment. The bioactive effect of SC, FA and their combinations was identified by promoting changes in root growth of V. radiata. In pots, treatments containing FA, SC and combination promoted increase in fresh and dry leaf mass. The foliar application of FA, SC and combination promoted an increase in field bulb productivity, reduced mass loss in stored bulbs and increased carbohydrate, amino acid and protein contents in onion bulbs.
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Claims 5
Claim · model-written summary
SC, FA and their combinations changed root growth of V. radiata.
- Taxon
- V. radiata
.jpg?width=60)
Vigna radiatae0 - Treatment
- SC, FA and their combinationse0
- Outcome
- root growthe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The bioactive effect of SC, FA and their combinations was identified by promoting changes in root growth of V. radiata.”
Claim · model-written summary
FA, SC and their combination increased fresh and dry onion leaf mass in pots.
- Taxon
- onion
Allium cepat0 - Treatment
- FA, SC and combinatione0
- Outcome
- fresh and dry leaf masse0
- Direction
- increasee0
- Setting
- potse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Organic onion growth”
e0“In pots, treatments containing FA, SC and combination promoted increase in fresh and dry leaf mass.”
Claim · model-written summary
Foliar FA, SC and their combination increased field onion bulb productivity.
- Taxon
- onionAllium cepat0
- Treatment
- foliar application of FA, SC and combinatione0
- Outcome
- field bulb productivitye0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Organic onion growth”
e0“The foliar application of FA, SC and combination promoted an increase in field bulb productivity, reduced mass loss in stored bulbs and increased carbohydrate, amino acid and protein contents in onion bulbs.”
Claim · model-written summary
Foliar FA, SC and their combination reduced onion bulb mass loss during storage.
- Taxon
- onionAllium cepat0
- Treatment
- foliar application of FA, SC and combinatione0
- Outcome
- mass loss in stored bulbse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Organic onion growth”
e0“The foliar application of FA, SC and combination promoted an increase in field bulb productivity, reduced mass loss in stored bulbs and increased carbohydrate, amino acid and protein contents in onion bulbs.”
Claim · model-written summary
Foliar FA, SC and their combination increased carbohydrate, amino acid and protein contents in onion bulbs.
- Taxon
- onionAllium cepae0
- Organ / stage
- onion bulbse0
- Treatment
- foliar application of FA, SC and combinatione0
- Outcome
- carbohydrate, amino acid and protein contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The foliar application of FA, SC and combination promoted an increase in field bulb productivity, reduced mass loss in stored bulbs and increased carbohydrate, amino acid and protein contents in onion bulbs.”
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See all 6 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.