This is a derived from seawater and used as fertilizer in very very low concentrations... I put out 4 pounds of sea mineral per acre mixed with 20 gallons of water. If broadcast you can put out 50-100lbs per acre initially. There are plenty of studies and resources online to clear up the confusion. Farmers who have begun to utilize sea minerals are having very good success. They are seeing less disease (plants aren't as mineral deficient), less pestilence (higher Brix, many bugs can't digest sugar well), and more drought tolerance, and they are also seeing comparable yields as well.