Field Research & Agronomy

AIM:

To assess the relative value of banding and topdressing K at seeding time or topdressing after emergence on growth and yield of wheat in the Esperance area.

For further detaqils contact your local Area Manager or the Summit Research Team

CONCLUSIONS:

• Differences in yield between treatments were significant.
  
• Treatments clearly demonstrated advantages of banding K fertiliser over topdressing.
  
• Sulphate of potash, and SOP-based K products such as the Gusto range, displayed yield advantages over muriate of potash, possibly due to additional S.
  However, price differentials need to be taken into account if increasing K application rates is desired.
  
• Early strong growth of Gusto Gold plots emphasizes the benefits of a full-compound product containing N, P, S and K plus trace elements.
  
• In a high yielding year, a Gusto-based fertiliser program may need to be supplemented with additional K to maximise yield and returns.
  This will be addressed in future trials.
  
• No toxicity was observed in any MOP application up to 50 kg/ha drilled with seed.