This study presents results from determining the effects of biostimulants on the natural weight loss and biochemical composition of apples (Malus domestica L.) during long-term storage. Foliar application with 1% WPU Antifreeze + 1% WP Drip Ca+Mg contributed to a significant decrease in average weight loss in apple cultivar Sinap Orlovsky fruits during long-term storage compared with the control treatment and other options. In apple fruits, the TSS content enhanced in all variants after storage, i.e., control (8.6%), 1% WPU Antifreeze + 1% WP Drip Ca+Mg (12.5%), and 3% WPU Antifreeze + 3% WP Drip Ca+Mg (7.9%). At the end of storage, a significant decrease resulted in the titrated acids in apple, viz., 53.1% in control and 52.1% and 57.5% in variants with foliar treatments (with 1% and 3% solutions, respectively). Largely, the sugar content increased by 16.7% at the end of apple storage with 1% WPU Antifreeze + 1% WP Drip Ca+Mg. The studies revealed a notable influence of meteorological conditions on the accumulation of TSS, organic acids, sugar content, and ascorbic acid in the apple cultivar Sinap Orlovsky.
Apple (M. domestica L.), cultivar Sinap Orlovsky, weight loss, biochemical composition, long storage
The biostimulant showed the highest efficiency by using 1% WPU Antifreeze + 1% WP Drip Ca+Mg in apple (M. domestica L.) cultivation technologies to improve and preserve the quality of apples during long-time storage.