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Potato crops have reached the period of row closure. This is the best period for foliar feeding: treatments can be carried out 2-3 times at intervals of 7-10 days. The most important nutrients administered foliarly are: boron, sulfur and manganese. Sulfur will contribute to the increase in sugar synthesis and thus to increase the transport of produced sugars to potato tubers and to optimize nitrogen management and reduce the content of nitrates in plants. This ingredient will also increase the plants’ resistance to blight and periodic water shortages. The administration of manganese will increase the starch content in the tubers and contribute to reducing susceptibility to common scab, rhizoctoniosis and late blight.

VITAFER S ® Mineral, highly concentrated fertilizer for emergency and preventive supply of sulfur, nitrogen and trace elements. Recommended to improve nitrogen absorption, increase plant resistance to diseases and the negative effects of abiotic and biotic stress

Composition: 19.8% N + 69.3% SO₃ + 0.014% B + 0.006% Cu + 0.027% Fe + 0.017% Mn + 0.00132% Mo + 0.006% Zn + adjuvants + EPIN

VitaFer Extra Mn® Mineral fertilizer for emergency and preventive supply of manganese. Recommended for crops with a high demand for manganese: potatoes, sugar beets, corn, vegetables and legumes.

Composition: 6.56% N + 3, 28 K₂O + 22.96% SO₃ + 27.88% Mn

VITAFER Zn + B ® – mineral fertilizer for emergency and preventive supply of zinc and boron. It optimizes the supply of plants with the ingredients necessary for proper development: zinc and boron, and has a positive effect on the increase of crops and improvement of their quality.

Composition: 3.9% N + 5.48% B + 5.48% Zn + EPIN

VITAFER Green ®Biostimulator containing plant L-amino acids with optimal content of macro and micronutrients to eliminate the adverse effects of abiotic and biotic stress. L-amino acids are the precursor of growth substances. They are a carrier of nutrients contained in foliar fertilizers and often serve as a natural adjuvant.

Composition: 2.66% N + 0.22% B + 0.22% Cu + 1.43% Fe + 0.55% Mn + 0.022% Mo + 0.55% Zn + natural plant bioregulators + amino acids and vitamins + EPIN

Doses and dates of use:

Potato: VitaFer S 3 – 5 l/ha, VitaFer Zn+ B 2l/ha, VitaFer Extra Mn 0.5 – 1 l/ha, VitaFer Green 1- 2l/ha,

VitaFer Green as an addition to the working liquid with fungicides, foliar fertilizers and insecticides, dose 0.5 – 1 l/ha.