Metagenomics: mapping the mysteries of soil

What is the role of earthworms in soil health?

• They increase soil acidity.

• They are the main predators of soil microbes.

• They act as chief engineers of soil structure.

• They are the primary source of nutrients for plants.

What technology is used to identify soil microbes by sequencing DNA?

• Genomics

• Cryogenics

• Metagenomics

• Biometrics

What is the main challenge in understanding the impact of phages on soil?

• Their role in nutrient cycling is well understood.

• Their impact on microbial activity is largely unknown.

• They are too large to be studied effectively.

• They are not present in most soils.

What farming practice has been recently adopted in European arable farming?

• Complete removal of earthworms

• Increased use of chemical fertilizers

• Direct drilling of seeds without tilling

• Frequent plowing of fields

What is still uncertain about minimum tillage?

• Its ability to reduce soil erosion

• Its influence on earthworm population

• Its impact on crop productivity and carbon storage

• Its effect on soil acidity