Biochar Research

Click on the link for the technical report {Tech Report Link} or read the summary report below


Biochar Dairy Feeding Trial

This involved:

Measuring 6 weekly milk yield, protein, fat, ICCC compared with long term data across 4 dairies.
Manure pH, and other properties
Soil health (burying biochar)

4 x dairy’s of 250 cattle at Fleurieu Milk Co
1 fed Biochar type 1 90ml/head/day but issues with other additives
1 fed Soft Agriculture – Pty Ltd – Mara Seeds Pty Ltd 200gms/head/day
2 dairy’s without biochar

A link to the technical report can be found HERE

Soils Research

In addition we have conducted a number of soil based research and demonstration trials with biochar.  A summary of results presentation can be found HERE  and a link to the research results can be found here – SOIL HEALTH PROJECTS

Project SummaryFull Report Here

This project aimed to improve soil carbon, pH and minerals by applying Jeffries biochar compost mixes to soil.   

The results showed that the biochar amount with or without the composts had an impact on the organic carbon content, likely due to its high carbon content of biochar (up to 80%).  The more biochar present the higher the organic carbon in tonnes/ha. The more biochar present also the higher the gravimetric moisture. This is likely due to the water holding capacity of the biochar.

The ECEC was impacted upon positively by the addition of compost and the higher the biochar in the compost and the higher the application rate the better the ECEC.  This then resulted in higher amounts of cations in the soil in the compost and biochar treatments including magnesium and calcium with the addition of compost being beneficial. The JBC treatments did better than the biochar treatments alone.

It would appear that the JBC treatments or biochar did not impact on Ammonium but the organic JBC impacted on Nitrate (that can be converted from organic N).

 The copper levels were generally lower in the nothing plots and higher in the treatments. 

The zinc levels were higher in the treatment of the Randell Rd paddock and highest in the JBC supercharged treatment but there were only minor differences. 

The availability of minerals were impacted by the JBC treatments but the pasture type also had an impact. 

The phosphorus level in the soil was always higher where the biochar was with some additional impact with the organic JBC blend.

The biochar had an impact on the level of heavy metals with or without the compost.

The addition of compost to the biochar had a greater impact on the soil mineral content than biochar alone (in most cases). However, it would have been beneficial to test just compost to test the differences.  The organic compost appeared to have a greater effect on N and P availability regardless of the pasture present and would perhaps be the better of the 2 blends however a higher amount of biochar in the organic blend may have additional benefits.

In conclusion the aim of the trial to improve soil carbon, pH and minerals by applying Jeffries biochar compost mixes to soil was achieved to varying degrees.

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