Phosphorous is an important macro element for the growth of vegetable tissues; aids the development of the roots system and is paramount for physiological processes linked to flowering, fruit setting and fruit ripening. Potassium regulates transpiration, and intervenes in the creation of sugary substances and their move to the plants reserve organs. Quality of crop yield (sugary levels, colour, flavour, consistency), depends on these two nutrients..

Potassium phosphites are fertilising salts which are highly water-soluble and have a chemical structure of moderate dimensions with a high P₂O₅ content: thanks to these characteristics, they present a high systemic activity in the plants as they easily penetrate in the vegetable tissues and move in both ascending and descending directions. In comparison to potassium phosphates, at same weight, they supply higher quantities of P₂O₅ e K₂O.  Within vegetables they have a nutritional function as well as a highly protective function, derived from the natural phosphite induced increase of the synthesis of endogen phytoalexins. These are natural substances that increase vegetable resistance to fungal and bacterial pathogens.

For these reasons, VITA FOSFYK can be conveniently used for phosphor-potassium nutrition in alternative to common potassium phosphate,  in both foliar applications and soil and root applications.