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Nutra-Flo Company, based in North Sioux City, S.D., began producing liquid fertilizer in 1954. The family-owned business has become the leading independent liquid fertilizer manufacturer in North America. The company’s main product lines include PureGrade Liquid Fertilizer, MicroSolutions Liquid Micronutrients and Nulex Liquid Zinc. Plant locations are in Sioux City, Iowa, and Gibbon, Nebraska. Nutra-Flo offers high quality products, superior service and absolute dependability. Competitively priced fertilizer products are sold through local dealers across the country.