It has a dual effect as fertilizer and a biochemical disease prevention which gather phosphorous and calcium as phosphonite in a stable compound. Will not react with Ca or Mg in the soilIt has a role in plant protection from soil born diseases (fusarium, pythium, rhizoctonia, verticillium), plant blights and powdery mildew Provides plants with P and Ca during fruit set and have negative effect on root knot nematode.