As the season nears, concerns arise about nitrogen shortages in soil following a high-rainfall fall, which has caused nitrogen leaching. Soil conditions post-crop vary widely, influenced by factors such as prior crops (sugar beets, maize, etc.) and cultivation practices. Recent N mineral sampling underscores diminished N levels, primarily as nitrate, due to denitrification from waterlogged soils. Cover crops, if present, offer varying nitrogen contributions: larger ones potentially supply 30 kg/N per ha, while smaller ones might yield 10 kg/N per ha. Additionally, the choice of potato variety plays a pivotal role, with newer varieties with greater nitrogen efficiency compared to older ones. In our CNC, we will examine some of these varieties, like Avamond and Adelinde, and benchmark them against BMC or Festien. The selection of fertilizer type and quantity is also critical; commonly, a blend of pig manure, cattle manure, and digestate in a 6N:2P:6K ratio is utilized. This blend will be used by our CNC members for fertilizing their potatoes. The composition of the manure mixture is crucial for achieving a balanced nutrient supply throughout the growing season.