Biochar application physically alters soil

The third cycle of crops grown in the pot trials at the Apsara farm were harvested today. The lettuce were grown for 28 days in the pots, after a 14 day germination period in growing treys.

Biochar is reported to improve soil structure, as it can alter porosity, particle size, infiltration, drainage and water storage capacity. The physical impact of biochar in the pot trial soil was easily identifiable; it was much easier to remove the plant from the pot and the soil from the roots of the lettuce. A dense structure like that of the unammended pot will reduce the ability of the air and water to move through the soil and will make it more difficult for the plant roots to propagate through the soil.

The pictures show the two of the amendments, the soil clods are visible in the left hand picture (T0) which does not have any amendments. The picture in the right shows the biochar (84t/ha equivalent addition), compost and sediment amended soil.

Un-amended soil after lettuce harvest in pot trials. 17.06.2010

Biochar amended soil after lettuce harvest in pot trials. 17.06.2010

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One Response to “Biochar application physically alters soil”

  1. Tweets that mention Biochar application physically alters soil « Biocharm Project -- Topsy.com Says:

    […] This post was mentioned on Twitter by Kit R and Victoria Kamsler, Joerg Fingas. Joerg Fingas said: Biochar application physically alters soil: The third cycle of crops grown in the pot trials at the Apsara farm we… http://bit.ly/cj2ifj […]

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