• 1947
    Kerley Brothers founded Southwest Fertilizer & Chemical Co.
  • 1953
    Barney Kerley developed new method of liquid fertilizer production
  • 1959
    Thio-Sul® introduced to farmers
  • 1960
    Kerley Chemical focused on wholesale manufacturing
  • 1995
    Kerley is purchased by Tessenderlo Chemie
  • 2012
    TKI launched Crop Vitality brand

Leading the agriculture industry

Crop Vitality is the world’s largest and leading producer of sulphur-based liquid plant nutrition products to the agriculture industry. For 70 years we have served our customers in nurturing crops through our innovation, research and development of environmentally friendly, sustainable and nutrient-filled fertilizers. Our product line provides the nutrient elements to improve soil health, increase water percolation and maximize nutrient uptake.

Headquartered in Phoenix, Arizona, our line of products are manufactured at 11 locations throughout the United States, tested by agronomists and used by farmers across the globe. Tessenderlo Kerley, Inc (TKI) offers specialized crop and soil nutrients through Crop Vitality. The Crop Vitality group was formed in 2012 to distinguish TKI’s presence in agribusiness as we create solutions to meet the challenges of modern agriculture.