Fruit crops
The research carried out in the Cherkasy region involved the pre-sowing treatment of apple seeds with “Leonardite” fertilizer at the rate of 1.0 l/t and its foliar feeding in the amount of 3 times at the rate of 0.2 l/ha. The research results showed an increase in the mass of one fruit, its diameter, the content of sugars and dry substances in it, with a simultaneous decrease in the content of organic acids. Fertilizer treatment increased yield per tree and total yield by 13.7% compared to the control.
| Growth and development | |||
| Weight of one fruit, g | Diameter of one fruit, cm | Yield from one tree, kg | |
| Control | 154 | 7 | 20,8 |
| Fertilizer “Leonardite” | 162 | 7,3 | 23,7 |
| Sugar content, % | Content of organic acids, % | Dry matter content, % | |
| Control | 10,6 | 0,4 | 15,6 |
| Fertilizer “Leonardite” | 11,3 | 0,34 | 16,5 |
| Yield t/ha | |
| Control | 13,9 |
| Fertilizer “Leonardite” | 15,8 |
Increase in yield
on 13,7 %