Comparative phosphorus requirement of canola and wheat

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Abstract
The yield response of canola (also known as rape, Brassica napus) and wheat (Triticum aestivum) to applications of phosphorus (P) as single superphosphate was measured in three field experiments in south‐western Australia. The P was banded with the seed while sowing at 4 cm depth. The P requirements of the species was determined from the amount of P required to produce 90% of the maximum yield. Canola consistently required less P than wheat, from 50 to 55% less P for dried tops, and 30 to 58% less P for seed. The P concentration and P content (P concentration multiplied by yield) in dried tops or seed was consistently larger for canola than wheat.