Abstract
The growth response of wheat genotypes supplied with phosphorus fertiliser at different rates (banded or mixed throughout the soil) and sparingly soluble phosphorus sources (aluminium phosphate and iron phosphate) is not known. Eleven wheat genotypes and 1 rye genotype were tested at 3 rates of phosphorus fertiliser application (5, 10 and 20 mg P/kg soil) in a pot study. Another experiment compared 4 wheat genotypes at 2 rates of phosphorus application (deficient and sufficient) and 2 application methods (banding and mixing throughout the soil). The selected wheat genotypes were also used to investigate growth and root exudation response to iron phosphate and aluminium phosphate supply. Banding of phosphorus fertiliser increased the uptake of phosphorus and wheat growth compared with mixing phosphorus throughout the soil. Wheat genotypes did not differ significantly in growth and phosphorus uptake at the low rate of application. With increasing rates of phosphorus supply, the 2 phosphorus-fertiliser-responsive wheat genotypes (Wawht 2074 and Aroona) had significantly increased phosphorus uptake and root and shoot weights. When supplied with aluminium phosphate and iron phosphate, the 2 phosphorus-fertiliser-responsive genotypes had larger roots and higher concentration of phosphorus in the shoots and roots, while the phosphorus utilisation-efficient wheat genotypes (Westonia and Gutha) had higher shoot weights than phosphorus fertiliser-responsive ones. All wheat genotypes produced quantitatively and qualitatively similar root exudates in the iron phosphate, aluminium phosphate and zero-phosphorus treatments. The aluminium phosphate treatment caused genotypes to increase root exudation of oxalic anions, uptake of phosphorus and growth, compared with the iron phosphate treatment. It was concluded that the choice of genotypes for achieving increased wheat growth would depend on the phosphorus source in soil and the rate of application of phosphorus fertiliser.
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Claims 10
Claim · model-written summary
Banded phosphorus increased wheat uptake and growth versus mixed phosphorus.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- Banding of phosphorus fertilisere0
- Outcome
- uptake of phosphorus and wheat growthe0
- Direction
- increasede0
- Comparator
- mixing phosphorus throughout the soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Banding of phosphorus fertiliser increased the uptake of phosphorus and wheat growth compared with mixing phosphorus throughout the soil”
Claim · model-written summary
At low application rate, wheat genotypes did not differ significantly in growth and phosphorus uptake.
- Taxon
- WheatTriticum aestivume0
- Outcome
- growth and phosphorus uptakee0
- Qualifier
- low rate of applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat genotypes did not differ significantly in growth and phosphorus uptake at the low rate of application”
Claim · model-written summary
Increasing phosphorus supply significantly increased phosphorus uptake and root and shoot weight in Wawht 2074.
- Taxon
- wheatTriticum aestivume0
- Material
- Wawht 2074e0
- Treatment
- increasing rates of phosphorus supplye0
- Outcome
- phosphorus uptake and root and shoot weightse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With increasing rates of phosphorus supply, the 2 phosphorus-fertiliser-responsive wheat genotypes (Wawht 2074 and Aroona) had significantly increased phosphorus uptake and root and shoot weights”
Claim · model-written summary
Increasing phosphorus supply significantly increased phosphorus uptake and root and shoot weight in Aroona.
- Taxon
- wheatTriticum aestivume0
- Material
- Aroonae0
- Treatment
- increasing rates of phosphorus supplye0
- Outcome
- phosphorus uptake and root and shoot weightse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With increasing rates of phosphorus supply, the 2 phosphorus-fertiliser-responsive wheat genotypes (Wawht 2074 and Aroona) had significantly increased phosphorus uptake and root and shoot weights”
Claim · model-written summary
With aluminium phosphate, responsive genotypes had larger roots and more phosphorus in roots and shoots.
Verbatim
e0“When supplied with aluminium phosphate and iron phosphate, the 2 phosphorus-fertiliser-responsive genotypes had larger roots and higher concentration of phosphorus in the shoots and roots”
Claim · model-written summary
With iron phosphate, responsive genotypes had larger roots and more phosphorus in roots and shoots.
Verbatim
e0“When supplied with aluminium phosphate and iron phosphate, the 2 phosphorus-fertiliser-responsive genotypes had larger roots and higher concentration of phosphorus in the shoots and roots”
Claim · model-written summary
Westonia had higher shoot weight than responsive genotypes.
- Taxon
- wheatTriticum aestivume0
- Material
- Westoniae0
- Outcome
- shoot weightse0
- Direction
- highere0
- Comparator
- phosphorus fertiliser-responsive onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the phosphorus utilisation-efficient wheat genotypes (Westonia and Gutha) had higher shoot weights than phosphorus fertiliser-responsive ones”
Claim · model-written summary
Gutha had higher shoot weight than responsive genotypes.
- Taxon
- wheatTriticum aestivume0
- Material
- Guthae0
- Outcome
- shoot weightse0
- Direction
- highere0
- Comparator
- phosphorus fertiliser-responsive onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the phosphorus utilisation-efficient wheat genotypes (Westonia and Gutha) had higher shoot weights than phosphorus fertiliser-responsive ones”
Claim · model-written summary
All wheat genotypes produced quantitatively and qualitatively similar root exudates across the tested phosphorus treatments.
- Taxon
- wheatTriticum aestivume0
- Outcome
- root exudatese0
- Direction
- similare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All wheat genotypes produced quantitatively and qualitatively similar root exudates in the iron phosphate, aluminium phosphate and zero-phosphorus treatments”
Claim · model-written summary
Aluminium phosphate increased oxalic-anion exudation, phosphorus uptake and growth versus iron phosphate.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- aluminium phosphate treatmente0
- Outcome
- root exudation of oxalic anions, uptake of phosphorus and growthe0
- Direction
- increasee0
- Comparator
- iron phosphate treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The aluminium phosphate treatment caused genotypes to increase root exudation of oxalic anions, uptake of phosphorus and growth, compared with the iron phosphate treatment”
t0“Wheat genotypes”
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