Regional trials

The 3 New Horizons trial sites established in the 2014 season are located in South Australia's main broadacre grain growing regions at:

  • Brimpton Lake on the Eyre Peninsula 
  • Karoonda in the Murray Mallee
  • Cadgee in the South East.

Scientific trials are being conducted across the 3 sites to test the New Horizons methodology – with results from 2 completed seasons now available and a third season about to get underway.

2015 Results

Scientific trials are being conducted across the 3 sites to test the New Horizons methodology on sandy soils.

The key findings from the second year of trials (2015 season) are that:

  • the best treatments led to a 70-200% increase in grain yield
  • the best performing treatments at all sites included the incorporation of organic matter deep into the soil using a spader, which was applied in 2014
  • grain yields were often further improved with the incorporation of clay and additional fertiliser, which was also applied in 2014
  • grain yields were still substantially improved for a number of treatments in comparison to the unmodified control despite a second challenging season climatically. Note: the unmodified control was managed as per farmer best practice.

Table 1: 2015 Grain yield results


Brimpton Lake - Eyre PeninsulaKaroonda - Murray MalleeCadgee - South East
TreatmentSpading + Organic MatterSpading + Organic MatterSpading + Nutrition
Grain yield times Control*102%226%74%

*Control was unmodified and managed as per farmer best practice. 

Table 2: 2015 Dry matter results


Brimpton Lake - Eyre PeninsulaKaroonda - Murray MalleeCadgee - South East 
TreatmentSpading + Clay + Organic Matter + NutritionSpading + Clay + Organic Matter + NutritionSpading + Clay + Organic Matter + Nutrition
Dry matter times Control*78%124%60%

Brimpton Lake

The best result from this site was achieved with spading and incorporating organic matter and fertiliser, with an average grain yield of 3.82 tonnes per hectare achieved in comparison to 1.89 tonnes per hectare for the unmodified control.

Karoonda

The best result was achieved with spading and incorporating clay and organic matter with an average grain yield of 1.55 tonnes per hectare achieved compared to 0.48 tonnes per hectare for the unmodified control.

Cadgee

The best result from this site was achieved by spading and incorporating clay, organic matter and nutrition with an average grain yield of 2.2 tonnes per hectare achieved in comparison with 1.27 tonnes per hectare for the unmodified control.

2014 Results

The key findings from the first year of trials are that:

  • the best treatments at least doubled dry matter production and doubled grain yield
  • deep mixing of the soil profile using a spader improved the yield at all sites and adding nutrients and/or organic matter further boosted yield.

These results were achieved in a climatically challenging year. 

Table 3: 2014 Grain yield results 


Brimpton Lake - Eyre PeninsulaKaroonda - Murray MalleeCadgee - South East
TreatmentSpading + Organic MatterSpading + Organic MatterSpading + Nutrition
Grain yield times Control*111%318%134%

*Control was unmodified and managed as per farmer best practice.

Table 4: 2014 Dry matter results


Brimpton Lake - Eyre PeninsulaKaroonda - Murray MalleeCadgee - South East
TreatmentSpading + Clay + Organic Matter + NutritionSpading + Organic Matter + NutritionSpading + Clay + Organic Matter + Nutrition
Grain yield times Control*156%222%189%

*Control was unmodified and managed as per farmer best practice.

Brimpton Lake

The best result from this site was achieved with spading and adding organic matter with an average grain yield of 2.96 tonnes per hectare achieved in comparison to 1.4 tonnes per hectare for the unmodified control.

Karoonda

The best result was achieved with spading and adding organic matter with an average grain yield of 2.05 tonnes per hectare achieved compared to 0.49 tonnes per hectare for the unmodified control.

Cadgee

The best result from this site was achieved by spading in nutrition with an average grain yield of 1.38 tonnes per hectare achieved in comparison with 0.59 tonnes per hectare for the unmodified control.

Images

NEW HORIZONS the next revolution in agriculture | Brimpton Lake, Eyre Peninsula test site crop
Brimpton Lake, Eyre Peninsula test site
NEW HORIZONS the next revolution in agriculture | Karoonda, Murray Mallee test site showing crop on unmodified soil vs lush crop on modified soil
Karoonda, Murray Mallee test site

Page Last Reviewed: 10 Mar 2016
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