25th International Symposium of the International Scientific Centre for Fertilizers (CIEC): "Significance of Sulfur in High-Input Cropping Systems"

  • Luit de Kok (Organiser)

    Activity: Organising and attending an event Organising and contributing to an event Academic


    The 25th CIEC symposium is thematically dedicated to the significance of sulfur in high-input cropping systems. The reason is simply that one of the global competence centers of sulfur research is located in Groningen. Beyond this sulfur deficiency causes worldwide avoidable yield losses, diminishes the nutritional quality and reduces nitrogen utilization efficiency of crops. The Netherlands are characterized by extremely high levels of agricultural production and big animal enterprises, which induce substantial environmental problems such as release of trace gases contributing to climate change, contamination of ground- and drinking water with nitrate and non-sustainable use of the finite resource phosphorus. Besides the implementation of GAP (Good Agricultural Practice) codes and the strict compliance with rules of balanced fertilization, novel technologies such as the acidification of slurries with sulfuric acid for reducing the release of nitrogenous gases are required urgently in order to tackle these problems. Recycled fertilizer products as for instance digestates from biogas plants offer a way to utilize manures and slurries. However, aspects of phosphorus speciation, risk of contamination with organic xenobiotics and heavy metals, and infectivity by pathogens need to be evaluated in the course of fertilizer value and soil protection.The Symposium will address various topics of global interest and the presentation of innovative data in fertilizer research is appreciated explicitly. The major subjects are: • Sulfur metabolism in crops, mechanisms & applications to food security • Increase of fertilizer efficiency by optimized nutrient ratios & nitrification inhibitors • Strategies of efficient use of nutrients from manure, slurries & secondary raw materials • Efficient use of phosphorus • Balanced fertilization & nutrient balances • Secondary nutrients: silicon & micro-nutrients!In invited lectures internationally highly acknowledged scientists will present cutting-edge research and state-of-the-art facts for each of the themes. The symposium brings together scientists from all over the world interested in the specifics of plant nutrition and fertilization in high-input systems. Participants will leave the symposium having shared ideas, having contributed to the body of knowledge concerning fertilizer use, and having made friends and contacts for future research.
    Event typeConference
    LocationGroningen, NetherlandsShow on map
    Degree of RecognitionInternational


    • Sulfur Metabolism
    • Plant Nutrition
    • Food Security
    • Fertilizers
    • Crop Cultivation