Different mineral nitrogen fertilizers (ammonium, urea, nitrate, calcium cyanamide) have been demonstrated to impact plant health. However, these effects are often extensively studied primarily in cereal crops, and variations exist depending on the specific type of crop.

The effects of various mineral nitrogen fertilizers on alternative crops, such as vegetables, have received less comprehensive investigation. For instance, long-term mineral fertilization demonstrated positive effects on disease suppression in lettuce when compared with organic management across two soil types (Windisch et al., 2021).

The intricate interactions involving soil composition, fertilization practices, root secretions, rhizosphere microbiomes, and disease susceptibility remain largely unexplored.

The aim of these experiments is to enhance our quantitative comprehension of the intricate interplays among soil composition, fertilization methods, crop varieties, root secretions, rhizosphere microbiomes, and disease presence.

Various types of vegetable crops receive fertilization from diverse mineral nitrogen fertilizers (ammonium, urea, nitrate, calcium cyanamide). The impacts on crop yield, plant health, rhizosphere microbiota, and root secretions will be measured.

Anticipated outcomes include the identification of overarching patterns rather than those specific to particular plant species. This research aims to provide recommendations for effective fertilizer choices with broad applicability.