Crystal green: a potential phosphorus replacement


Research organisaton

Trial details

Researcher(s) Sarah Noack and Peter Hooper (Hart Field Site Group) and Greg Butler (SANTFA)
Year(s) 2013
Contributor Hart Field Site Group
Trial location(s) Site 5, Hart, SA
Crystal green: a potential phosphorus replacement locations

To compare Crystal Green with traditional DAP and urea applications alone and in combination. 

Key messages
  • In the first year of trials (2012) a 75 kg/ha rate of Crystal Green significantly increased lentil yield by 18% compared to the nil (100%) and DAP treatments.
  • In the second year of trials no carry-over effect of Crystal Green or DAP was observed on wheat grain yield.
Lead research organisation Hart Field Site Group
Host research organisation Hart Field Site Group
Related program N/A
Acknowledgments N/A
Other trial partners SANTFA
Download the trial report to view additional trial information


Crop type Wheat
Treatment type(s)
  • Fertiliser
  • Fertiliser: Type
  • Fertiliser: Application
Trial type Experimental
Trial design Randomised,Replicated

Hart 2013

Sow date 12 June 2013
Harvest date Not specified
Plot size 1.4m x 10m
Plot replication Not specified

None residual effects of 2012 treatments

Download the trial report to view additional method/treatment information

Download results

Trial results Table 1

# Treatment 1
Grain yield (t/ha) Protein (%) Screenings (<2.0mm sieve) (%)
1 Nil 4.1 11.9 2.2
2 DAP + TSP equiv CG 35 kg/ha 4.1 11.8 2.1
3 DAP + TSP equiv CG 100 kg/ha 4.3 11.5 2.1
4 DAP 35 kg/ha 4.2 11.7 2.1
5 DAP 100 kg/ha 4.2 11.7 2.1
6 CG 35 kg/ha 4.3 11.4 1.8
7 CG 100 kg/ha 4.3 12.4 2.9
8 CG + Urea equiv DAP 35 kg/ha 4.4 12.5 2.2
9 CG + Urea equiv DAP 100 kg/ha 4.4 12.9 2.5

Grain yield t/ha


Protein %


Screenings (<2.0mm sieve) %

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 5, Hart, SA Calcarosol
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 5, Hart, SA Chromosol
National soil grid Source
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



Site 5, Hart SA 2013

Observed climate information

Rainfall trial gsr (mm) 303mm

Derived climate information

Site 5, Hart SA


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

SILO weather estimates sourced from
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 last modified: 06-06-2019 14:30pm AEST