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Paper-Lester-David-Deep-PK-February-2022.pdf
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🔗 Source: era.daf.qld.gov.au
📊 Size: 1.43 MB
👤 Author: David Lester
⬇️ Downloads: 57

Summary

Research on deep placement of phosphorus (P) and potassium (K) fertilizers has shown significant increases in grain yield in central Queensland, particularly for wheat, chickpea, and sorghum crops. Stratified soil testing is crucial for identifying fertility and constraint issues, and subsurface placement of P fertilizer at 20-25 cm depth has been effective in increasing crop yields. The relationships between crop P uptake and grain yield are robust, and potassium is emerging as a yield constraint, although more research is needed. Critical soil test values have been established for P and K, and banding is the most efficient method for applying these less mobile nutrients.

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Research on deep placement of phosphorus (P) and potassium (K) fertilizers has shown significant increases in grain yield in central Queensland, particularly...

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  • File Format: PDF
  • File Size: 1.43 MB
  • Pages: 19
  • Language: EN
  • Author: David Lester
  • Total Downloads: 57
  • Last Updated: 4 hours ago

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