Abstract
This study was intended to assess the effects of a biostimulant based on Ascophyllum nodosum and fulvic acid in the mitigation of water deficit in soybean plants. The experimental design was completely randomized in a 2 x 4 + 1 factorial scheme (two application times, four proportions of biostimulant, and a control. 65 days after sowing, plant height, stem diameter, number of leaves, leaf area, gas exchange, photosynthetic pigments, membrane damage, and dry masses were measured. The proportion of 0.250 kg ha-1 before the imposition of water deficit positively increased growth, gas exchange variables, and the relative chlorophyll index (p < 0.05). Leaf water potential was less negative (p < 0.05) when applying the proportion of 0.100 kg ha-1 before or 0.250 kg ha-1 after water deficit. The damage was reduced when 0.250 to 0.500 kg ha-1 was applied before the imposition of water deficit (p < 0.05). The biostimulant mitigated the effects of water stress on soybean, mainly when applied before the imposition of stress
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Claims 5
Claim · model-written summary
Applying 0.250 kg ha-1 of the biostimulant before water deficit positively increased soybean growth, gas exchange variables and relative chlorophyll index compared with a control.
- Taxon
- soybean
Glycine maxt0 - Treatment
- 0.250 kg ha-1 before the imposition of water deficite1
- Outcome
- growth, gas exchange variables, and the relative chlorophyll indexe1
- Direction
- increasede1
- Comparator
- a controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mitigates water deficit in soybean”
e0“four proportions of biostimulant, and a control”
e1“The proportion of 0.250 kg ha-1 before the imposition of water deficit positively increased growth, gas exchange variables, and the relative chlorophyll index (p < 0.05)”
Claim · model-written summary
Applying 0.100 kg ha-1 of the biostimulant before water deficit made soybean leaf water potential less negative than the control.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 0.100 kg ha-1 beforee2
- Outcome
- Leaf water potentiale2
- Direction
- less negativee2
- Comparator
- a controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mitigates water deficit in soybean”
e0“four proportions of biostimulant, and a control”
e2“Leaf water potential was less negative (p < 0.05) when applying the proportion of 0.100 kg ha-1 before or 0.250 kg ha-1 after water deficit”
Claim · model-written summary
Applying 0.250 kg ha-1 of the biostimulant after water deficit made soybean leaf water potential less negative than the control.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 0.250 kg ha-1 after water deficite2
- Outcome
- Leaf water potentiale2
- Direction
- less negativee2
- Comparator
- a controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mitigates water deficit in soybean”
e0“four proportions of biostimulant, and a control”
e2“Leaf water potential was less negative (p < 0.05) when applying the proportion of 0.100 kg ha-1 before or 0.250 kg ha-1 after water deficit”
Claim · model-written summary
Applying 0.250 to 0.500 kg ha-1 of the biostimulant before water deficit reduced soybean damage.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 0.250 to 0.500 kg ha-1e3
- Outcome
- damagee3
- Direction
- reducede3
- Comparator
- a controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mitigates water deficit in soybean”
e0“four proportions of biostimulant, and a control”
e3“The damage was reduced when 0.250 to 0.500 kg ha-1 was applied before the imposition of water deficit (p < 0.05)”
Claim · model-written summary
The biostimulant mitigated the effects of water stress on soybean, mainly when applied before the imposition of stress.
- Taxon
- soybeanGlycine maxt0
- Treatment
- biostimulante4
- Outcome
- effects of water stresse4
- Direction
- mitigatede4
- Qualifier
- mainly when applied before the imposition of stresse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mitigates water deficit in soybean”
e4“The biostimulant mitigated the effects of water stress on soybean, mainly when applied before the imposition of stress”
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