Overcoming zinc deficiency in wheat with foliar sprays

1985

Research organisaton

Trial details

Researcher(s) N/A
Year(s) 1985
Contributor Department of Agriculture and Food WA
Trial location(s) Lake Grace -Newdegate_2, WA
Overcoming zinc deficiency in wheat with foliar sprays locations
Aims

To determine the effectiveness of foliar sprays of zinc  fertiliser  for maximum grain yield of wheat for a range of zinc deficinet soil types in the Newdegate- lake Grace district.

Key messages

5 Experiments started in 1980's reported in 1985-86.

  1. Sources of Zn (sulfate (22%);  & chelate (EDTA 15% Zn) at 5-7 levels of Zn
  2. Applied at 2 growth stages [4th leaf; mid-tillering] of wheat grown at 5 sites.
  3. Wheat sprayed at 4th leaf yielded higher [ about 0.5 t/ha higher) than delaying until mid-tillering under severely Zn deficient plants.
  4. 0.45 kg Zn/ha for both times of spraying resuilted in maximum yield of 1.5 -2.5 t/ha (summarised over 5 experiemnts) in each particular year. About 50 -60% grain yield increases.
  5. Zn chelate was more effective at the  4the leaf stage. About 200 g Zn/ha for maximum grain yield for chelate while 450 for the sulfate source.
  6. At mid-tillering about 250-300 g Zn/ha required for maximum yield for both chelate and sulfate 
  7.  Recommendation : 1 kg of Zn sulfate required for maximum yield on severely deficient soil; spray on onset of symptoms.
  8. Little foliage damage if sprayed under cool, cloudy conditions. Warm sunny conditions increased leaf damage and decreased response to foliar sprays.
  9. Sprays at 4th leaf were higher yielding than the mid-tillering stage.
  10. Cool condition for leaf absorption.
  11. Results replicated over several season and soil types.
Lead research organisation Department of Agriculture and Food WA
Host research organisation Department of Agriculture and Food WA
Related program More Profit from Crop Nutrition
Acknowledgments N/A
Other trial partners Not specified

Method

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

Lake Grace -Newdegate_2 1985

Sowing machinery

12 run sowing machine 

Sow date Not specified
Harvest date Not specified
Plot size 2.1m x 50m
Plot replication 4
Fertiliser

400 kg Plain super/ha; Zn @ 2.0 kg/ha.

Sources of Copper were Cu sulfate (25% Cu), copper oxychloride (52% Cu) and Cu chelate (EDTA, 15% Cu).

 

Trial source data and summary not available
Check the trial report PDF for trial results.
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Lake Grace -Newdegate_2, WA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Lake Grace -Newdegate_2, WA Sodosol
National soil grid Source: CSIRO/TERN
NOTE: National Soil Grid data is aggregated information for background information on the wider area
Actual soil values can vary significantly in a small area and the trial soil tests are the most relevant data where available

Soil properties

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Climate

Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

Lake Grace -Newdegate_2 WA

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Some data on this site is sourced from the Bureau of Meteorology

SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.

Trial report and links


No trial reports or attachments found


Trial last modified: 21-05-2019 20:15pm AEST