Yara Pure Nutrient app provides sound information on key aspects of mineral nitrogen fertilization. It aims at returning mineral fertilizers to their rightful place as a “pure nutrient”, offering the required precision, efficiency and reliability to meet both the agronomic and environmental imperatives of sustainable agriculture. This app compares the advantages and benefits of specific fertilizer types such as nitrates and urea and explains techniques for optimizing crop yield while improving environmental compatibility and cost. It provides a wealth of information on related aspects and is a must for farmers and all those interested in the agronomic, economic and ecological aspects of farming and fertilization. It is updated regularly with new topics. Yara is an international company specialized in plant nutrition. As the world’s largest supplier of mineral fertilizers for more than a century, we help provide food for a growing world population.