The use of organics , either alone or in combination with microbes /chemical fertilizers , have played a vital role in sustaining the agriculture from subsistence . Production of biochars from materials of predominantly plant origin to possibly animal origin , including the sewage sludge , has opend up  newer possibilities of manoeuvering   soil health vis-a-vis  crop health. In this background, i am proposing following set of questions to  my learned colleagues  for their candid answers:

* What kind of substrates are best suited for biochar production?

* How could we regulate the quality of biochar ?

* What are the parameters that guide the manurial value of   quality biochar ?. 

* How can we improve the manurial value of biochar?

* Is there any long term evaluation of biochar with reference  to crop response and soil health assessment?

Thanks and regards as well

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