Sea -90 Agricultural grade pure sea minerals. Provides macro and micro nutrients in a natural salt mineral to increase yield. Used lightly in the soil or brewed in a microbe tea in replacement of seawater. Best used for broadcasting on soil, pastures, hay fields, row crops, small fruits, tree fruits, nuts and gardens. Suggested use in tillage .5 lbs./ 1000 sq ft. or approximately 25 lbs./ acre. For composting 3 lbs./ ton or 2 lbs./ cu yd compost biomass. The salts can be dissolved for foliar applications. Helps restore CEC and conductivity in sandy soils after heavy rains. Sea minerals have also been used for livestock mineral supplement. Conforms to USDA National Organic Program Standards.