Humus is highly recalcitrant, and this resistance to decomposition leads to a long residence time in soil. Plant debris is less recalcitrant, resulting in a much shorter residence time in soil.

fresh and partially decomposed biomass (plant and animal), and the well decomposed and stable biomass fraction (humus). soil structure: The aggregation, or secondary shape, of soil particles which ...

A worm burrows its way through the dark earth, ingesting particles of soil and expelling nutrient-rich casts in a constant forage for food. Charles Darwin described earthworms as one of the most ...

The drought monitor report as of Tuesday, Oct. 15 shows a continued deterioration in drought conditions for the state. Barton ...

Both intext and exercise questions are important for students. They help students to check their understanding of topics.

Huttunen, Liisa Saravesi, Karita Markkola, Annamari and Niemelä, Pekka 2013. Do elevations in temperature, CO2, and nutrient availability modify belowground carbon gain and root morphology in ...

Soil is a mixture of tiny particles of rock, dead plants and animals, air and water. Different soils have different properties depending on their composition. Sandy soil is pale coloured and has ...

Soil fertility is the ability of soil to sustain plant growth and optimize crop yield. This can be enhanced through organic and inorganic fertilizers to the soil. Nuclear techniques provide data that ...

Soil is important to each of us in our everyday lives, but too often we think about it as just dirt! Soil is the special link between plants and humans. It feeds us, captures carbon and provides a ...

When European-American settlers first began ploughing in Iowa, they found the weather and local geology had combined this organic mulch with sand and silt to form a nutrient-rich type of soil ...

The American dictionary Merriam-Webster is to change its definition of the word racism after receiving an email from a young black woman. Kennedy Mitchum, a recent graduate of Drake University in ...

"The definition of a toxic work environment; that was Stark Soil & Water," said Taylor Noble, a drainage specialist who left ...