Did you know that most phosphorus (P) in crops is directed to the grain or tubers by harvest? Studies in NW Europe reveal that if grain phosphorus levels fall below 0.32%, it’s a sign that increasing soil phosphorus could have boosted yields. Soil tests alone aren’t enough—they often miss the mark on final crop phosphorus status. Many fields with seemingly adequate soil phosphorus still showed lower grain phosphorus, leading to potential yield losses. In fact, crops with grain phosphorus below 0.32% could lose around £2,360 per field! For better crop management, it’s crucial to combine both soil and grain phosphorus analysis to maximize yield and profitability.