Residual effects of fertiliser zinc on a black earth soil from north western New South Wales

1973 - 1978

Research organisations

Trial details

Researcher(s) Jonathon Holland
RG Weir
Year(s) 1973 - 1978
Contributor Department of Primary Industries NSW
Trial location(s) Breeza, NSW
Further information View external link
Residual effects of fertiliser zinc on a black earth soil from north western New South Wales locations
Aims

To investigate the effects of rates of initial and subsequent applications of zinc on maize yields grown on black earth soils of north western NSW.

Key messages
  • In most seasons, treatment with zinc almost doubled grain yields.
  • Broadcasting and working in was more effective than drilling zinc with the fertilizer.
  • Residual effects of the initial 5.6, 11.2 and 38 kg Zn remained evident throughout the 6 years and the higher rates continued to produce highest yields.
Lead research organisation N/A
Host research organisation Department of Agriculture NSW
Related program More Profit from Crop Nutrition
Acknowledgments N/A
Other trial partners Not specified
Download the trial report to view additional trial information

Method

Crop type Cereal (Grain): Maize
Treatment type(s)
  • Crop : Nutrition
  • Fertiliser : Application Method
  • Fertiliser : Rate
Trial type Experimental
Trial design Replicated

Breeza 1973

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

Zinc was either broadcast or drilled at initial rates of 0, 5.6, 11.3 or 38 kg Zn/ha and 0 or 5.6 kg Zn/ha in subsequent seasons.

Breeza 1974

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

Zinc was either broadcast or drilled at initial rates of 0, 5.6, 11.3 or 38 kg Zn/ha and 0 or 5.6 kg Zn/ha in subsequent seasons.

Breeza 1975

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

Zinc was either broadcast or drilled at initial rates of 0, 5.6, 11.3 or 38 kg Zn/ha and 0 or 5.6 kg Zn/ha in subsequent seasons.

Breeza 1976

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

Zinc was either broadcast or drilled at initial rates of 0, 5.6, 11.3 or 38 kg Zn/ha and 0 or 5.6 kg Zn/ha in subsequent seasons.

Breeza 1977

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

Zinc was either broadcast or drilled at initial rates of 0, 5.6, 11.3 or 38 kg Zn/ha and 0 or 5.6 kg Zn/ha in subsequent seasons.

Breeza 1978

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

Zinc was either broadcast or drilled at initial rates of 0, 5.6, 11.3 or 38 kg Zn/ha and 0 or 5.6 kg Zn/ha in subsequent seasons.

Download the trial report to view additional method/treatment information

Trial report and links

1973 trial report



Trial last modified: 17-11-2025 20:58pm AEST