Seaweed contains all major and minor plant nutrients, and all trace elements; alginic acid; vitamins; auxins; at least two gibberellins​; and antibiotics. Sea weed products improve the water holding characteristics of the soil and help in the formation of crumb structure. They do this because the alginic acid in the sea weed combines with metallic radicals in the soil to form a polymer with a greatly increased molecular weight.

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BIOSOL-plus is a seaweed extract that contains all major and minor plant nutrients, and all trace elements; alginic acid; vitamins; auxins; at least two gibberellins​. Auxins in seaweed include indolyl-acetic acid and these auxins have been found to encourage the growth of more cells. BIOSOL-plus contains all known trace elements in a form acceptable to plants.

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