The trial was held on a property in Walkaway, Western Australia on very a very sandy soil, low in nutrients. Being on a fertigation system, the owner of the farm was concerned that nutrients applied were leaching through the soil profile before the plants had a chance to use them.
Our assumption, was that by adding biochar to the soil it would slow the leaching process, assisting in fertiliser efficiency and improving soil & crop health.The trial also had the added benefit of potentially value adding poultry waste, currently a low value commodity and often a problem for poultry farmers.
Biochar was applied and worked into soil at a medium and a high rate combined with a traditional cucumber starter fertiliser at full rate and low rate. There were also two treatments of biochar alone, at a high rate and very high rate.