- Acetic anhydride/perchloric acid/acetic acetate method and acetic anhydride/pyridine method were used to get the result.
- Based on sodium acetate method,the addition of antibiotics could significantly improve the isolation efficiency of B.thuringiensis from soil.
- The method seems good but it needs to be tried out.
- I can't claim infallibility for this method.
- Summer fallow is the best method of destroying weeds.