នេះ Publication Issue មិន​មាន​ក្នុង​ភាសា​របស់​អ្នក, មើល​ក្នុង: English (en), Español (es),
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Biochar can be made from a wide variety of feedstocks and under a wide variety of conditions, yielding a wide variety of potential product characteristics. Not all biochars are suitable for soil application as supplied. This Technical Bulletin covers two rapid tests that can be used to assess the presence of toxic compounds in biochar:

1. Germination Test and 2. Worm Avoidance Test.