Based on some other research, biochar really can’t compete with clay for WHC. So minimal impact. However, I agree with biochar depending on particle sizes used to act as more of an aggregate (course sand to gravel) in the clay to increase macropore development. The biggest down side is you need a lot of biochar to begin to change the soil structure in a primarily clay soil. Could consider a blending of course sand and biochar. Soils in the top half of the pyramid are classified as Hydrologic Soil Group (HSG) D which are often found along streams, rivers, floodplains, and wetlands so from an environmental standpoint shouldn’t be impacted anyway.
From: main@Biochar.groups.io <main@Biochar.groups.io> On Behalf Of CHANDRA SEKHAR PAUL
Sent: Wednesday, October 21, 2020 11:22 AM
Subject: Re: [Biochar] New paper on water saving benefits of biochsr
As you know clay soil generally retains a high amount of water in comparison to sandy soil. The addition of biochar to the clay soil increases the pores in soil particles. In my point of view, the biochar addition will increase water retention more in clay soil but definitely, it will depend on the biochar feedstocks and pyrolysis temperature. You can go through a research article (attached).
On Wed, Oct 21, 2020 at 1:21 AM Ron Larson <rongretlarson@...> wrote: