Abstract
Abstract Soil acidity is one of the most important soil constraints for wheat growth, and magnesium (Mg) can play a critical role in mitigating the adverse effects of soil acidity on plants. There is, however, limited information available about the influence of Mg nutrition, especially foliar application, on wheat ( Triticum aestivum ) growth in acidic soil. In a series of glasshouse experiments, Al‐sensitive wheat genotype (ES8) was grown to vegetative stage (Zadoks 23) with or without foliar Mg application at different rates (0, 50, 200 and 1,000 mg Mg/L), and acidic soil was used as the growth medium with or without lime and Mg amendment. The effects of these treatments on plant growth, physiological responses, tissue concentration of Mg, dry biomass accumulation and root length were characterized. Magnesium application to foliage significantly increased (by around 14%) both shoot and root dry biomass compared to the control (0 foliar Mg). No significant variation was observed in response to different Mg salts (sulphate or chloride) applied to either soil or foliage in relation to wheat growth and physiological responses. Other than liming, foliar Mg application (200 mg Mg/L) coupled with Mg application to soil (20 mg/kg soil) provided optimum conditions for wheat growth in an acid soil. Leaf extension rate, chlorophyll content and root length of wheat treated with 200 mg Mg/L foliar application were increased significantly (by 12%, 10% and 23%, respectively) in comparison to plants treated with 0 foliar Mg. Physiological parameters such as net photosynthetic rate, transpiration rate and stomatal conductance were 4‐fold higher in foliar Mg‐treated plants compared with those receiving no foliar Mg. Therefore, applying 200 mg Mg/L to the foliage may assist in minimizing the negative impact of soil acidity on wheat growth.
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Claims 8
Claim · model-written summary
Foliar magnesium application increased wheat shoot and root dry biomass by around 14% compared with the control.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- Magnesium application to foliagee1
- Outcome
- shoot and root dry biomasse1
- Direction
- increasede1
- Value
- around 14%e1
- Comparator
- the control (0 foliar Mg)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soil acidity stress in wheat”
e1“Magnesium application to foliage significantly increased (by around 14%) both shoot and root dry biomass compared to the control (0 foliar Mg)”
Claim · model-written summary
Different Mg salts (sulphate or chloride) applied to soil or foliage did not change wheat growth or physiological responses.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- different Mg saltse2
- Outcome
- wheat growth and physiological responsese2
- Direction
- no_changeinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soil acidity stress in wheat”
e2“No significant variation was observed in response to different Mg salts (sulphate or chloride) applied to either soil or foliage in relation to wheat growth and physiological responses”
Claim · model-written summary
Foliar Mg at 200 mg/L increased wheat leaf extension rate by 12% compared with no foliar Mg.
- Taxon
- wheatTriticum aestivume4
- Treatment
- 200 mg Mg/L foliar applicatione4
- Outcome
- Leaf extension ratee4
- Direction
- increasede4
- Value
- 12%e4
- Comparator
- plants treated with 0 foliar Mge4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Leaf extension rate, chlorophyll content and root length of wheat treated with 200 mg Mg/L foliar application were increased significantly (by 12%, 10% and 23%, respectively) in comparison to plants treated with 0 foliar Mg”
Claim · model-written summary
Foliar Mg at 200 mg/L increased wheat chlorophyll content by 10% compared with no foliar Mg.
- Taxon
- wheatTriticum aestivume4
- Treatment
- 200 mg Mg/L foliar applicatione4
- Outcome
- chlorophyll contente4
- Direction
- increasede4
- Value
- 10%e4
- Comparator
- plants treated with 0 foliar Mge4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Leaf extension rate, chlorophyll content and root length of wheat treated with 200 mg Mg/L foliar application were increased significantly (by 12%, 10% and 23%, respectively) in comparison to plants treated with 0 foliar Mg”
Claim · model-written summary
Foliar Mg at 200 mg/L increased wheat root length by 23% compared with no foliar Mg.
- Taxon
- wheatTriticum aestivume4
- Treatment
- 200 mg Mg/L foliar applicatione4
- Outcome
- root lengthe4
- Direction
- increasede4
- Value
- 23%e4
- Comparator
- plants treated with 0 foliar Mge4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Leaf extension rate, chlorophyll content and root length of wheat treated with 200 mg Mg/L foliar application were increased significantly (by 12%, 10% and 23%, respectively) in comparison to plants treated with 0 foliar Mg”
Claim · model-written summary
Foliar Mg-treated wheat had net photosynthetic rate, transpiration rate and stomatal conductance about 4-fold higher than plants with no foliar Mg.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- foliar Mge5
- Outcome
- net photosynthetic rate, transpiration rate and stomatal conductancee5
- Direction
- highere5
- Value
- 4‐folde5
- Comparator
- those receiving no foliar Mge5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soil acidity stress in wheat”
e5“Physiological parameters such as net photosynthetic rate, transpiration rate and stomatal conductance were 4‐fold higher in foliar Mg‐treated plants compared with those receiving no foliar Mg”
Claim · model-written summary
Combined foliar Mg (200 mg/L) and soil Mg (20 mg/kg) provided optimum conditions for wheat growth in acid soil, other than liming.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- foliar Mg application (200 mg Mg/L) coupled with Mg application to soil (20 mg/kg soil)e3
- Outcome
- wheat growthe3
- Qualifier
- Other than liminge3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soil acidity stress in wheat”
e3“Other than liming, foliar Mg application (200 mg Mg/L) coupled with Mg application to soil (20 mg/kg soil) provided optimum conditions for wheat growth in an acid soil”
Claim · model-written summary
Applying 200 mg Mg/L to the foliage may assist in minimizing the negative impact of soil acidity on wheat growth.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- applying 200 mg Mg/L to the foliagee6
- Outcome
- minimizing the negative impact of soil acidity on wheat growthe6
- Qualifier
- may assiste6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soil acidity stress in wheat”
e6“applying 200 mg Mg/L to the foliage may assist in minimizing the negative impact of soil acidity on wheat growth”
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