Two pot experiments and a two-year field trial applied lanthanum chloride to aromatic rice. Lanthanum increased the aroma compound 2-acetyl-1-pyrroline, photosynthesis, yield components and antioxidant enzyme activity. Lanthanum in the harvested grain was not reported.
Key numbers
- Pot application rates 20 to 120 mg/kg lanthanum chloride; field rate 12 kg/ha lanthanum chloride (abstract).
- Lanthanum chloride at 80 and 100 mg/kg and at 12 kg/ha raised 2-acetyl-1-pyrroline in seedlings and mature grain by 6.45% to 43.03% (abstract).
Methods (brief)
Pot and field experiments with and without lanthanum chloride; 2-acetyl-1-pyrroline, proline, gamma-aminobutyric acid and enzyme activities measured; three replicates.
Evidence fitness
Supports a statement that lanthanum is applied to rice as a yield or quality input in field practice. Because grain lanthanum was not measured, it cannot show whether this raises lanthanum in rice.
Limitations
No grain lanthanum analysis; one aromatic cultivar; one region.
Related evidence
Update history
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