The below mentioned article provides a note on winogradsky column, explained with the help of a suitable diagram. The Winogradsky column is a glass or clear plastic cylinder with a core of solid or sediment in it. This model system employed to study the growth of specific microorganisms, has been named after a noted Russian […]
Winogradsky Column (With Diagram) | Microbiology
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BIS Norms for Common Bio-Fertilizers | Microbiology
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The BIS means Bureau of Indian Standards. The BIS norms are also called ‘Standards for Bio fertilizers’ or ‘Standards for Existence of Bio fertilizers’, which are given below:- 1. Standards for Rhizobium (RI): IS 8268:2001 (i) Viable Cell Count: 108 Viable Rhizobium Cells/g of the Carrier within 15 day s of manufacture and 107 Cells/g […]
Bio-Fertilizers (Exam Questions) | Microbiology
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Everything you need to know about bio-fertilizers. Some of the most frequently asked exam questions are as follows:- Q.1. What are the substitutes of calcium carbonate for pelleting? Ans: The substances used for pelleting other than lime are gypsum, bentonite, rock phosphate and charcoal. Q.2. How much nitrogen may be fixed in Rhizobium legume association? […]
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