Nutri-Aktiv Zinc FLOW is a liquid fertilizer in the form of a concentrated suspension that provides zinc, to be used by means of foliar spraying or any root fertigation system or injection into soil. Foliar spray: As a general dose we will use 100-150 cc/hl. Localized irrigation: As a general dose we will use 1-2 liters/ha, carrying out 2 applications on very demanding crops.