Dry soil reduces fertilizer phosphorus and zinc diffusion but not bioavailability


Research organisatons

Trial details

Researcher(s) TM McBeath, MJ McLaughlin, JK Kirby and RD Armstrong
Year(s) 2012
Contributor South Australian Research and Development Institute
Trial location(s) Waite Adelaide, SA
Further information View external link
Dry soil reduces fertilizer phosphorus and zinc diffusion but not bioavailability locations

To establish whether the efficacy of fertilizers, which are usually simultaneously placed below the seed at planting, is influenced by being in contact with the dry soil for a period of time before seed germination and crop emergence.

Key messages
  • Commercial granular and liquid monoammonium phosphate fertilizers enriched with zinc were incubated under dry and wet conditions to test the effects of dry sowing on fertilizer diffusion, lability, and subsequent availability to wheat (Tritium aestivum L. ‘Axe’) plants in the growth chamber using isotopic techniques.
  • Fertilizer incubated in dry soil tended to have a much greater lability than in wet soil, but diffusion was limited.
  • The restricted diffusion during the incubation did not negatively impact nutrient availability to plants subsequently grown in the growth chamber, however, and simulated dry sowing was not shown to have a detrimental effect on fertilizer efficiency.
Lead research organisation N/A
Host research organisation Commonwealth Scientific and Industrial Research Organisation
Related program More Profit from Crop Nutrition
Acknowledgments N/A
Other trial partners Not specified


Crop type Wheat
Treatment type(s)
  • Crop
Trial type Experimental
Trial design Unknown

Waite Adelaide 2012

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

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Trial last modified: 10-06-2019 11:25am AEST