BlackJack / BlackJak — a leonardite-based liquid/suspension, rich in humic and fulvic acids.

Action:
This product has an acidic pH (3–5), promotes root system development, increases nutrient uptake efficiency, and reduces the required application rate (multi-component concentrate).

Usage:
Can be applied to soil or used as a foliar treatment — through drip irrigation, foliar spraying, or soil application. It is beneficial for both organic and commercial crops.