Once again, and for the eleventh consecutive year, the Fertiberia Chair of Agro-environmental Studies celebrated its Seminar on Fertilization for sustainable agriculture, this year on "SECTOR OF FERTILIZERS, TRENDS OF THE FUTURE". More than two hundred participants, among whom were representatives of MAPAMA, the Autonomous Communities, agricultural associations, farmers, researchers, students, university professors, etc., attended the meeting, which took place last Wednesday, April 18, in the Higher Technical School of Agronomic, Food and Biosystems Engineering of the Polytechnic University of Madrid.