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The effect of organic based bio-stimulants on soil health and plant growth

The effect of organic based bio-stimulants on soil health and plant growth

  • Author: Wheatbelt NRM
  • Date Posted: Nov 27, 2015
  • Category:

Project Details

Project Delivery: Wheatbelt NRM, Lakes Grower Group

Contact: Fiona Brayshaw

Ph: 96703100


Website: Wheatbelt NRM Website

Start Date: 2015                       End Date: 2017

Site ID: SA00345S

Area (Ha): 10.3


Project Aim

To evaluate the use of organic carbon based biostimulants on soil health and plant productivity in Western Australian cropping systems.


Project Description

The use of organic carbon based biostimulants is not a common practice in WA broadacre farming systems, but has the potential to improve soil structure allowing for better water penetration and increased availability of sol nutrients for crop utilisation and growth.

Blackjak is a concentrated liquid mixture of humic, fulvic and ulmic acids that is suitable for soil and foliar application. Humic acids are natural chelating agents so soil applications help to mobilize macro and micro nutrients. When used in heavy clay soils Blackjak may help break the clay bonds potentially making the soil lighter leading to an increase in microbial activity, air and water circulation and water retention.

Also to be trialed is a combination of a liquid carbon and a liquid soluble lime applied with UAN.  The liquid carbon RCC33 Reactive Carbon Complex holds nutrients (especially high analysis fertilisers) in a loosely charged carbon bond that permits plants to easily access this nutrition, thereby preventing waste and leaching. It also chelates and holds other macro and micro elements to supply a nutrient available and fertile area for root systems, microbes, oxygen and water to interact in a highly productive aerobic environment. The soluble lime contains effective volumes of plant available calcium to remediate soil acidity, salinity and sodicity to improve nutrient availability. CalSap is a liquid calcium that regulates plant nitrogen efficiency, improves phosphate efficiency, helps strengthen cell walls, improves plant risk remediation, improves pasture quality.

The project will test the use of Blackjak @ 2l/ha and combo – CalSap @ 7l/ha and RCC33 @ 14l/ha with liquid N compared to control areas, on soil attributes, crop plant tissue, grain yeild and grain quality.


Project Outputs

Project outputs will be added once the trial has been completed.





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