Biochar as phosphorus fertilizer #biochar #europe #microbes #nutrients #properties
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CHANDRA SEKHAR PAUL
Respected members,
As I currently working on the availability of phosphorus from biochar so, I am introducing a new topic about "Biochar as a phosphorus fertilizer". The main source of phosphorus is the rock phosphate which is depleting and the requirement increasing. On the other hand, biochar generally contains a large amount of phosphorus so, in this situation, it is necessary to find out a new strategy to increase the availability of the phosphorus from biochar for plant uptake. The soil microbial community also plays an important role to solubilize the phosphorus from biochar. Research in this field increasing during recent times. If anyone has suggestions/proposals or ideas on this topic please inform here in this group discussion. Thank you very much to all of you and be careful during the viral outbreak. Regards, Paul
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Frank Strie
Hello Paul and all, Sewage sludge becomes a phosphorus fertilizer - pyreg
1. In the PYREG process, the sewage sludge is completely recycled into a fertiliser substrate with plant-available phosphorus that is approved throughout Europe.
“Stricter limits, obligation to recycle phosphorus, rising waste disposal costs due to capacity bottlenecks: The recycling of sewage sludge is becoming increasingly sophisticated. We support you with our leading-edge carbonisation technology: With a PYREG system, the dried sewage sludge is carbonised, hygienised and completely recycled into a phosphorus fertiliser substrate approved throughout Europe. The technology has already proven at 3 wastewater treatment plants in Germany and the USA, and pays off from a size of 50,000 p.e. (population equivalent) ”…
From: main@Biochar.groups.io <main@Biochar.groups.io> On Behalf Of CHANDRA SEKHAR PAUL
Respected members,
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Rick Wilson <rwilson@...>
I am surprised that you believe phosphorus levels in biochar are high.
I've tested every commercially available biochar that I could bring into California. Phosphorous concentrations are very low in all cases. A few hundred ppm's on average. Potassium, in some cases is at the thousands of ppm level. I'm interested in how biochar impacts phosphorus in the soil. Please see the attached graphic describing phosphorous states in soil. Rick
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Barry Husk
Rick,
One of our recent studies on biochar and phosphorus retention in soil:
Biochar-induced soil stability influences phosphorus retention in a temperate agricultural soil http://joann-whalen.research.mcgill.ca/publications/Geoderma%20351--71-75.pdf
Barry Husk
From: main@Biochar.groups.io <main@Biochar.groups.io> On Behalf Of Rick Wilson
I am surprised that you believe phosphorus levels in biochar are high.
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Barry: Could you clarify the dates of biochar addition and the testing. The description implies that the biochar was added in 2010, but could be read to say that the research plots were established ten years ago. I could not determine when the tests took place, just the 2020 pub date. It seems that biochar provides a safe haven for mycorrhizal fungi, but require a symbiotic relationship with the plant to receive hexose, but the plants do not send out signals or easily admit the penetration of the mycorrhizal hyphae unless the plant is short on phosphorous or nitrogen. In that case, the plant provides up to 20% of its carbon from photosynthesis to the fungi, which returns nutrients including phosphorous in a form the plant can use. My read of soil runoff reduction seems to credit the glomalin exudate from the biochar-enhanced mycorrhizal fungi with gluing soil into larger particles. Furthermore, tillage exposes this carbon to degradation. Hence the question of how long after biochar addition were the tests run, and if more than one season, were the plots tilled? Thomas R Casten Cell: 630-915-9215 Work: 630-321-1095
On Sat, Mar 21, 2020 at 7:48 AM Barry Husk <husk@...> wrote:
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Rick Wilson
Thanks Barry, good article! Rick
On Saturday, March 21, 2020, 05:34:09 PM PDT, Thomas Casten <tr9casten@...> wrote:
Barry: Could you clarify the dates of biochar addition and the testing. The description implies that the biochar was added in 2010, but could be read to say that the research plots were established ten years ago. I could not determine when the tests took place, just the 2020 pub date. It seems that biochar provides a safe haven for mycorrhizal fungi, but require a symbiotic relationship with the plant to receive hexose, but the plants do not send out signals or easily admit the penetration of the mycorrhizal hyphae unless the plant is short on phosphorous or nitrogen. In that case, the plant provides up to 20% of its carbon from photosynthesis to the fungi, which returns nutrients including phosphorous in a form the plant can use. My read of soil runoff reduction seems to credit the glomalin exudate from the biochar-enhanced mycorrhizal fungi with gluing soil into larger particles. Furthermore, tillage exposes this carbon to degradation. Hence the question of how long after biochar addition were the tests run, and if more than one season, were the plots tilled? Thomas R Casten Cell: 630-915-9215 Work: 630-321-1095 On Sat, Mar 21, 2020 at 7:48 AM Barry Husk <husk@...> wrote:
-- Thomas R Casten tr9casten@... 630-915-9215
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