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 ...

Soil pH or soil reaction is an indication of the acidity or alkalinity of soil and is measured in pH units. Soil pH is defined as the negative logarithm of the hydrogen ion concentration. The pH scale ...

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 increasing human population is placing greater pressure on soil and water resources and threatening our ability to produce sufficient food, feed, and fiber. As a result, there is a growing ...

Cultivating the soil by digging is fundamental to good gardening. Learn the difference between single and double digging and when the no dig method works. Digging the soil is essential for good ...

There is no soil on Mars. Just dusty, poisonous regolith—the mixture of loose rock, sand, and dust that makes up the planetary surface. On Earth, the regolith is replete with billions of years ...

2005). With the exception of C, H, and O, which plants obtain from air and water, plants derive the remaining 14 elements from the soil or through fertilizers, manures, and amendments (Parikh ...

The bulk of soil is made up of a mixture of organic matter, rock and mineral particles. However, it's the air, water and nutrients in the ground that the growing plant really relies on.

Agronomist, Agronomy Research Manager, Agronomy Specialist, Crop Nutrition Scientist, Microbiology Soil Scientist, Research Soil Scientist, Soil Classifier/Soil Scientist, Soil Fertility Extension ...

But gardening grows on me, and now I know not to use the word "dirt." "We refer to it as soil, because dirt is a four-letter ...

Peat soil is rich in organic matter but low in nutrients, requiring supplementation for optimal plant growth. Plants like ...