Question

how can you collect soil samples without distribution of microbes? ​

Answer 1

Answer:

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Add about 15 ml of nutrient agar to the plate; then put the lid on the plate and swirl gently so that the agar covers the bottom of the plate. Make a control plate by putting 1 ml of distilled water into a Petri plate, using a new pipette. Add agar; put the lid on and swirl the plate.

Answer 2

Explanation:

A soil probe or auger is ideal for taking soil samples.

You can use a soil probe to obtain soil from multiple locations around the landscape bed or garden.

Take samples to a depth of 6-8 inches. You should collect separate samples for soil tests from different sections within your yard, landscape, or garden.

Hope it helps...