Vegetable crops
The studies carried out in the Vinnytsia region included pre-sowing treatment of tomato 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 content of carbohydrates and mono- and disaccharides with a simultaneous decrease in water in the fruits. In addition, the fertilizer increased the yield by 11.2% compared to the control.
| Content, g/100g of tomatoes | |||
| water | carbohydrates | mono- and disaccharides | |
| Control | 93,2 | 3,82 | 3,35 |
| Fertilizer “Leonardite” | 92,7 | 4,07 | 3,57 |
| Yield t/ha | |
| Control | 31,2 |
| Fertilizer “Leonardite” | 34,7 |
Increase in yield
on 11,2 %