Biochar trench production and hoof processing

Biochar - Yahoo Groups

Frits work with integrating TFOD trench biochar production with cattle stalls in Mozambique looks like a practical solution for a number of situations. Could raw, lumpy charcoal be provided as bedding for cattle, goats, horses and pigs, thereby crushing the char, capturing nutrients, reducing emissions, reducing odour / fly /insect pests, improving animal health and comfort, preparing biochar for composting or direct soil amendment.

The amazing news from Nepal keeps coming...

More stunning stuff from Hans-Peter and the team working in Nepal...
"We recently published a new paper about using field made biochar as nutrient carrier achieving average yield increases of 100% with concentrated root zone application of only 1 t biochar per ha. Demonstrating the new method in 21 field trials with 13 different crops seems quite consistent and we hope to trigger new experiments and farmer adaptations  in what might become a breakthrough in agronomic biochar use. I attach the paper wishing you an inspiring read, 

Yours, Hans-Peter"

BIOCHAR-BASED FERTILIZATION WITH LIQUID NUTRIENT ENRICHMENT: 21 FIELD TRIALS COVERING 13 CROP SPECIES IN NEPAL

Hans-Peter Schmidt 1 * , Bishnu Hari Pandit 2 , Gerard Cornelissen 3,4, Claudia I. Kammann 5
1 Ithaka Institute for Carbon Strategies, Rue de l’Ancienne Eglise 9, CH-1974 Arbaz, Switzerland 
2 Ithaka Institute for Climate Farming (IICF), Ratanpur, 33900 Tanahu, Nepal 
3 Institute for Environmental Sciences (IMV), University of Life Sciences (NMBU), Akershus, As 1432, Norway 
4 Norwegian Geotechnical Institute (NGI), 0806 Oslo, Norway 
5 WG Climate Change Research for Special Crops, Department of Soil Science and Plant Nutrition, Hochschule Geisenheim University, Von-Lade-Str. 1, Geisenheim D-65366, Germany 
Received 27 January 2017; Revised 15 May 2017; Accepted 29 June 2017 

ABSTRACT 

"Biochar produced in cost-efficient flame curtain kilns (Kon-Tiki) was nutrient enriched either with cow urine or with dissolved mineral (NPK) fertilizer to produce biochar-based fertilizers containing between 60–100 kg N, 5–60 kg P2O5 and 60–100 kg K2O, respectively, per ton of biochar. In 21 field trials, nutrient-enriched biochars were applied at rates of 0·5–2 t ha 1 into the root zone of 13 different crops. Treatments combining biochar, compost and organic or chemical fertilizer were evaluated; control treatments contained same amounts of nutrients but without biochar. All nutrient-enriched biochar substrates improved yields compared with their respective nobiochar controls. Biochar enriched with dissolved NPK produced on average 20% ± 5·1% (N = 4 trials) higher yields than standard NPK fertilization without biochar. Cow urine-enriched biochar blended with compost resulted on average in 123% ± 76·7% (N = 13 trials) higher yields compared with the organic farmer practice with cow urine-blended compost and outcompeted NPK-enriched biochar (same nutrient dose) by 103% ± 12·4% (N = 4 trials) respectively. Thus, the results of 21 field trials robustly revealed that low-dosage root zone application of organic biochar-based fertilizers caused substantial yield increases in rather fertile silt loam soils compared with traditional organic fertilization and to mineral NPK or NPK-biochar fertilization. This can be explained by the nutrient carrier effect of biochar, causing a slow nutrient release behaviour, more balanced nutrient fluxes and reduced nutrient losses, especially when liquid organic nutrients are used for the biochar enrichment. The results open up new pathways for optimizing organic farming and improving on-farm nutrient cycling."

Terra Preta - How to make the best Organic Gardening soil on the Planet?

Nepal, biochar, pumpkins x4

The "Nepal" label will provide more history on this research...

Fourfold Increase in Pumpkin Yield in Response to Low-Dosage Root Zone Application of Urine-Enhanced Biochar to a Fertile Tropical Soil

Abstract

A widely abundant and invasive forest shrub, Eupatorium adenophorum, was pyrolyzed in a cost-efficient flame curtain kiln to produce biochar. The resulting biochar fulfilled all the requirements for premium quality, according to the European Biochar Certificate. The biochar was either applied alone or mixed with fresh cow urine (1:1 volume) to test its capacity to serve as slow release fertilizer in a pumpkin field trial in Nepal. Treatments included cow-manure compost combined with (i) urine-only; (ii) biochar-only or (iii) urine-loaded biochar. All materials were applied directly to the root zone at a biochar dry matter content of 750 kg·ha⁻¹ before seeding. The urine-biochar treatment led to a pumpkin yield of 82.6 t·ha⁻¹, an increase of more than 300% compared with the treatment where only urine was applied, and an 85% increase compared with the biochar-only treatment. This study showed for the first time that a low-dosage root zone application of urine-enhanced biochar led to substantial yield increases in a fertile silt loam soil. This was tentatively explained by the formation of organic coating of inner pore biochar surfaces by the urine impregnation, which improved the capacity of the biochar to capture and exchange plant nutrients.