Applying magnetic iron to soil around 'Fremont' mandarin trees dramatically boosted growth, yield, and fruit quality. At the highest dose, trees produced 71.6% more fruit with better nutrition, juiciness, and vitamin C than untreated trees.
1
Trees receiving 750 g of magnetic iron per tree showed canopy volume increases of over 209% compared to untreated controls across two growing seasons.
2
Yield increased by up to 71.6% in the highest-dose treatment, with fruits scoring higher on juice volume, firmness, vitamin C, and sugar content.
3
Leaf nitrogen, phosphorus, and potassium levels rose by 38.7%, 42.3%, and 35.8% respectively, while stress markers like proline and sodium ion accumulation dropped significantly.
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