Technical | Science Made Simple
EVALUATING THE EFFICACY OF BSN SUPERSTRIKE
by Dr. Hooshang Nassery
What’s in this Insight
This IN highlights the early growth and microbial testing milestones of a canola crop in South Australia. One section of the trial crop was treated with BSN Superstrike (BSNSS) and the other treated with a competitor seed treatment product.
One Month after the Crop was Sown…..
These photo images were taken on 25th May 2017 and show the advantage given to the crop when ‘kick-started’ by seed priming with BSN Superstrike.
Sample being taken from the ground
Strong root growth and rhizosphere with balanced top growth
Sample being taken from the ground
Weak root growth and rhizosphere with less advanced top growth
Fact Finding Framework
- However the visual observations from photographs taken 19 days after sowing, when the performance advantage of any seed treatment could be expected to be seen, show a considerable advantage for plants treated with BSN Superstrike
Highlights for BSN Superstrike from the Laboratory Results
The results submitted by the laboratory showed very similar results and comments for the two samples included that :
In part;the Microbe Wise test measures the biomasses of key microbial groups directly from the samples submitted. It uses molecular (‘DNA-type’) technology to analyse the unique cell membrane ‘fingerprint’ of each microbe type to identify and quantify key groups important to soil processes. This is an accurate and precise means of measurement.
All things considered, the overall conclusion from a testing protocol such as was undertaken is that residue breakdown and nutrient cycling, as well as disease resistance, was better for the BSN-treated crop.
It is known that with more rhizosphere in BSN-treated crop, drought and salt resistance is bound to be better. This is due to increased moisture retention, and with the organic matter screening excess salt, allowing this to translate to yield benefits under difficult or stress conditions.
Regrettably, the true advantage of BSN seed priming treatment was simply not reflected in the analysis given by the laboratory in a unit weight comparison. If the rhizosphere from each plant had been washed, and the attached microbial populations accounted for, then the errors that inevitably come into play by selecting just a small sample based on unit weight from each sample could be avoided. In this sense it is feared that the analysis information, whilst broadly useful, does not deliver the quantitative results that reflect the benefits of greater rhizosphere development with healthy populations of microbial activity that allow the unlocking of soil nutrients at a greater pace for the crop.
As can be seen the BSN-treated plants produced at least double the rhizosphere mass than that of the competitor product – the bulk of the BSN-treated rhizosphere is bacteria and humus. It is this mass that brings about all the benefits of microbial activity for the crop.
So, we know that BSN Superstrike increases rhizosphere activity and exudation of organic acids, and the photographic evidence of the month-old crop (at the head of this Insight) is more evidence of this. Further, it releases soil-based phosphate bound to calcium (in alkaline soils), or soil-based phosphate that is bound to aluminium, iron and manganese in acid soils. Through this increased rhizosphere activity, the resultant faster root system growth protects plants from disease, in contrast to the disease susceptibility experienced by a plant with a slow growing root system.
Therefore BSN Superstrike does the job as expected.