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Sum18-13 N x P x K x Cu

AIM

To assess the response of wheat to high nitrogen (N) and phosphorus (P) fertilizer inputs.

For further details please contact your local Area Manager, or the Summit Research Team.

Table 1: Soil Analysis
Figure 1: Yield and Protein Response
Figure 2: Nitrogen and Phosphorus Response Curves

CONCLUSIONS

  • In-season observation found growth at the site was being driven by N, with little contribution of P, K or Cu.
  • At harvest, grain yield was high, 2.2 to 5.5 t/ha, and both N and P were found to have promoted grain yield.
  • Application rates of P at 8 to 10 kg/ha and N at 140 to 160 kg/ha optimised yield and profit at the site under the 2018 season conditions.
  • Grain protein production for high-yielding Scepter wheat crops continues to be a challenge with maximum protein concentration of 9.4% seen in the trial at 200 kg N/ha.
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