| Summary: | Soil solarization is a hydrothermal procedure of disinfesting soil of soilborne diseases and pests. Solarization can be combined with many other chemical or non-chemical alternatives to afford integrated pest and diseases management or improve plant yield. Calcium cyanamide (CaCN<sub>2</sub>) is a fertilizer used in agriculture sector and is also effective in suppressing soilborne pathogens. The present study assessed the influences of different pre-plant CaCN<sub>2</sub> dosages on strawberry grown on solarized or non-solarized soil. Soil solarization and 500 kg ha<sup>−1</sup> CaCN<sub>2</sub> significantly increased early marketable yield by 105.3%, total marketable yield by 53.0% and firmness by 3.0%, respectively compared with the control (no solarization × 0 kg ha<sup>−1</sup> of CaCN<sub>2</sub>). Exposing solarized plots to CaCN<sub>2</sub> at 1000 kg ha<sup>−1</sup> significantly increased fruit ascorbic acid content by 77.5% and phenolic content by 13.3% compared with fruits from control plants. Overall, plants grown on solarized soil performed better than those cultivated on no-solarized plots. Plants grown on soil treated with a dosage of 500 or 1000 kg ha<sup>−1</sup> CaCN<sub>2</sub> increased plant height, number of shoots plant<sup>−1</sup>, number of leaves plant<sup>−1</sup>, root collar diameter, plant visual quality, anthocyanins, and antioxidant capacity compared to control plants. Fruits from plants grown on soil exposed to CaCN<sub>2</sub> with a dosage of 500 and 1000 kg ha<sup>−1</sup> showed a lower N fruit content (5.4 and 19.5%, respectively) than control plants (non-treated control).
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