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soybeans ripening on plant

In each year of the trials we ran the standard application (per the above). In addition to this we also ran trials to evaluate optimal rates of application and potential nutrient use efficiency benefits (the results are available in the trial data). In each year the treated plots generated greater yields than the control plots. In 2015 where fertility was excellent the yield response was lower. Looking at years where fertility was good (4 of the 5 years) the treatments provided an average of 18% yield improvement. Yield improvements were gained irrespective of low or high control plot yields. Download the report.

Trial aim 

To evaluate the impacts on soybean yield when using BioAg fermented microbial liquids over the top of standard fertiliser applications.

Background

In field use and demonstration in Australia’s cropping regions had identified positive yield responses when applying BioAg’s fermented liquid cultures on to a range of crops.

In order to get more reliable, replicable, year on year results we needed to run independent, small plot replicated trials. Given the trial controls required BioAg selected the globally renowned AgriCentre Inc in Memphis, Tennessee, USA to perform the trials. 

Fertiliser rates were based on standard practice in the Tennessee area.

Method

Year20132014201520162017
Study designRandomised complete block
Plot size8 x 200 ft10 x 30 ft8 x 200 ft10 x 25 ft
Control plots4
Treated plots4
Treatment7.0 l/Ha Soil & Seed
2.9 l/Ha Balance & Grow
3.9 l/Ha Fruit & Balance
Soybean varietyGlycine Max Soybean

Products trialled

Treated plots received applications of BioAg’s Fermented Microbial Fertilisers; Soil & Seed, Balance & Grow and Fruit & Balance. 

Soil & Seed was applied on the soil at planting. Balance & Grow was applied as a foliar as two equal treatments, the first three weeks after planting and the second three weeks after the first application. Fruit & Balance was applied as a foliar as two equal treatments.

The first two weeks after the second application of Balance & Grow and the second 10 to 14 days after the first treatment.

Site characteristics

 

 20132014201520162017
% Sand13.6%27.6%11.3%27.6%13.6%
% Silt61.6%33.6%79.0%33.6%61.6%
% Clay 24.6%38.8%9.7%38.8%24.6%
% OM1.4%1.7%1.2%1.7%1.4%
pH6.56.46.96.46.5
CEC9.56.26.16.29.5
FertilityGoodExcellentGood
DrainageGood

Summary of results

In each year of the trials we ran the standard application (per the above). In addition to this we also ran trials to evaluate optimal rates of application and potential nutrient use efficiency benefits (the results are available in the trial data).

In each year the treated plots generated greater yields than the control plots. In 2015 where fertility was excellent the yield response was lower.

Looking at years where fertility was good (4 of the 5 years) the treatments provided an average of 18% yield improvement.

Yield improvements were gained irrespective of low or high control plot yields.

Yield response

Conclusion

The USA trials have shown that the use of BioAg liquids over the top of a fertiliser program increases yields. While yield in each season varied, each year provided a beneficial return.