Higher flexibility in input N:P ratios results in more balanced phosphorus budgets in two long-term experimental agroecosystems
Keywords: Phosphorus use efficiency (PUE); Tomato (Solanum lycopersicum); Corn (Zea mays); Winter wheat (Triticum aestivum); Lettuce (Lactuca sativa); Broccoli (Brassica oleracea); Organic vs. conventional fertilization