Abstract
The current investigation was aimed to investigate the influences of different irrigation regimes, bio-stimulants and their interaction on onion yield and yield components, to improve plant growth under water stress, to reduce the negative effect of water stress. A split-plot desing was used, which the main plot was irrigation treatments (100% of crop evapotranspiration, 80% ETc and 60% ETc), while the bio-stimulants (control, yeast extract, potassium humate and yeast extract plus potassium humate) were assigned in sub-plot. The results showed that soil application of the biostimulants reduced the negative impact of water deficit compared to control. Yeast extract followed by yeast extract plus potassium humate recorded the highest plant height, diameter of neck and bulb, shoots fresh weight, fresh weight of bulb and total yield of onion during both seasons. With decreasing the required amount of water (at 80% ETc), the reduction percentage was only 5.18% and 4.65% when plants treated with yeast extract compared to 100% ETc in the 1st and 2nd seasons, respectively. However, yeast extract at 80% ETc was higher in the total yield than untreated plants under 100% ETc irrigation regime by 16.37% and 16.03% during the first and second seasons. Moreover, the highest irrigation water use efficiency was recorded at an irrigation regime 80% ETc and yeast extract with no significant difference with yeast extract plus potassium humate. From obtained results, yeast extract and or yeast extract plus potassium humate could play an important role in increasing plant stress tolerance to water deficit irrigation.
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Claims 10
Claim · model-written summary
Soil applied biostimulants reduced the adverse impact of water deficit on onion relative to control.
- Taxon
- Onion
Allium cepat0 - Treatment
- soil application of the biostimulantse0
- Outcome
- negative impact of water deficite0
- Direction
- reducede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Onion”
e0“soil application of the biostimulants reduced the negative impact of water deficit compared to control”
Claim · model-written summary
Yeast extract produced the highest plant height, neck and bulb diameter, shoot and bulb fresh weight, and total yield in both seasons.
- Taxon
- onionAllium cepae0
- Treatment
- Yeast extracte0
- Outcome
- plant height, diameter of neck and bulb, shoots fresh weight, fresh weight of bulb and total yielde0
- Direction
- higheste0
- Qualifier
- during both seasonse0
- Comparator
- yeast extract plus potassium humatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Onion”
e0“Yeast extract followed by yeast extract plus potassium humate recorded the highest plant height, diameter of neck and bulb, shoots fresh weight, fresh weight of bulb and total yield of onion during both seasons”
Claim · model-written summary
With yeast extract at 80% ETc, the reduction relative to 100% ETc was 5.18% in the first season.
- Taxon
- OnionAllium cepat0
- Treatment
- 80% ETce0
- Outcome
- reduction percentagee0
- Direction
- reductione0
- Value
- 5.18%e0
- Qualifier
- 1ste0
- Comparator
- 100% ETce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Onion”
e0“With decreasing the required amount of water (at 80% ETc), the reduction percentage was only 5.18% and 4.65% when plants treated with yeast extract compared to 100% ETc in the 1st and 2nd seasons, respectively”
Claim · model-written summary
With yeast extract at 80% ETc, the reduction relative to 100% ETc was 4.65% in the second season.
- Taxon
- OnionAllium cepat0
- Treatment
- 80% ETce0
- Outcome
- reduction percentagee0
- Direction
- reductione0
- Value
- 4.65%e0
- Qualifier
- 2nde0
- Comparator
- 100% ETce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Onion”
e0“With decreasing the required amount of water (at 80% ETc), the reduction percentage was only 5.18% and 4.65% when plants treated with yeast extract compared to 100% ETc in the 1st and 2nd seasons, respectively”
Claim · model-written summary
Yeast extract at 80% ETc increased total yield by 16.37% over untreated plants at 100% ETc in the first season.
- Taxon
- OnionAllium cepat0
- Treatment
- yeast extract at 80% ETce0
- Outcome
- total yielde0
- Direction
- highere0
- Value
- 16.37%e0
- Qualifier
- firste0
- Comparator
- untreated plants under 100% ETc irrigation regimee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Onion”
e0“yeast extract at 80% ETc was higher in the total yield than untreated plants under 100% ETc irrigation regime by 16.37% and 16.03% during the first and second seasons”
Claim · model-written summary
Yeast extract at 80% ETc increased total yield by 16.03% over untreated plants at 100% ETc in the second season.
- Taxon
- OnionAllium cepat0
- Treatment
- yeast extract at 80% ETce0
- Outcome
- total yielde0
- Direction
- highere0
- Value
- 16.03%e0
- Qualifier
- seconde0
- Comparator
- untreated plants under 100% ETc irrigation regimee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Onion”
e0“yeast extract at 80% ETc was higher in the total yield than untreated plants under 100% ETc irrigation regime by 16.37% and 16.03% during the first and second seasons”
Claim · model-written summary
Irrigation at 80% ETc with yeast extract recorded the highest irrigation water use efficiency.
- Taxon
- OnionAllium cepat0
- Treatment
- 80% ETc and yeast extracte0
- Outcome
- irrigation water use efficiencye0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Onion”
e0“the highest irrigation water use efficiency was recorded at an irrigation regime 80% ETc and yeast extract with no significant difference with yeast extract plus potassium humate”
Claim · model-written summary
Irrigation water use efficiency with yeast extract did not differ significantly from yeast extract plus potassium humate.
- Taxon
- OnionAllium cepat0
- Treatment
- yeast extracte0
- Outcome
- irrigation water use efficiencye0
- Direction
- no significant differencee0
- Comparator
- yeast extract plus potassium humatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Onion”
e0“the highest irrigation water use efficiency was recorded at an irrigation regime 80% ETc and yeast extract with no significant difference with yeast extract plus potassium humate”
Claim · model-written summary
The authors conclude yeast extract could increase onion tolerance to deficit irrigation.
- Taxon
- OnionAllium cepat0
- Treatment
- yeast extracte0
- Outcome
- increasing plant stress tolerance to water deficit irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Onion”
e0“yeast extract and or yeast extract plus potassium humate could play an important role in increasing plant stress tolerance to water deficit irrigation”
Claim · model-written summary
The authors conclude yeast extract plus potassium humate could increase onion tolerance to deficit irrigation.
- Taxon
- OnionAllium cepat0
- Treatment
- yeast extract plus potassium humatee0
- Outcome
- increasing plant stress tolerance to water deficit irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Onion”
e0“yeast extract and or yeast extract plus potassium humate could play an important role in increasing plant stress tolerance to water deficit irrigation”
The same questions in other papers
botanical · physiology: water · Allium cepa (onion)Positive and negative results
1 reporting no difference from an alternative
- positive
botanical · yield · Allium cepa (onion)Positive and negative results
34 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- no effect
- no effect
34 papers more in this group
See all 38 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.