Content tagged "soil"

Frequently Asked Questions About Flooded Gardens and Lawns

To remove water from a flooded garden it is best to divert the water and if necessary, pump out excess water. However, this will not reverse damage caused by...

Urban Soils: Contamination and Urban Trees

Soil can be contaminated by masonry, wood, paper, asphalt, paint, fuel, cement, oil, salt, or other materials. Contamination may occur across an entire site,...

Urban Soils: Correcting Low Soil Moisture

Trees for Energy Conservation Updated: April 26, 2016

 Photo Credit: Raina SheridanLack of moisture in the soil is as harmful as too much water. Low soil moisture can be caused by high temperature, drought, high...

Urban Soil Problems that Affect Successful Tree Growth and Development

Trees for Energy Conservation Updated: April 25, 2016

  Many activities in an urban area can change a soil’s physical, chemical, or biological characteristics.   Construction and landscape maintenance are the...

Cause, Affect and Prevention of Erosion on Urban Trees

Site clearing and land grading are two construction activities that typically increase soil erosion. These actions change the soil profile and structure,...

How deep should mulch be applied around trees?

Wood and bark chip mulch protects trees and shrubs from lawnmower damage. However, do not make “mulch volcanoes” around tree trunks by applying chips up...

Clostridium botulinum

Keith R. Schneider, Mickey E. Parish, and Renée M. Goodrich Botulism is caused by the nerve toxins produced by the bacterium Clostridium botulinum, and can...

How to Correct Excessive Soil Moisture and Drainage Problems

Trees for Energy Conservation Updated: March 17, 2013

Soils with excessive moisture have poor aeration because pore spaces are filled with water. Roots tend to grow near the surface in such soils. With poorly...

Soil Volume and Rooting Space When Planting Trees

Trees for Energy Conservation Updated: March 17, 2013

To ensure adequate stability and to allow a tree to grow to its potential size, a tree’s root system must have adequate soil volume in which to...

How to Correct Soil Compaction

Trees for Energy Conservation Updated: March 17, 2013

Soil compaction is a major cause of tree decline in urban areas. Compaction occurs when a force, such as feet, vehicles, and even water from some sprinkler...

Nutrient Imbalance and How to Correct It

Soils in urban areas may have a nutrient imbalance. If there are inadequate nutrients, tree growth and development will be affected. Nutrient imbalances are...

When and with what do I fertilize blueberries?

Gardens & Landscapes Blueberries Updated: October 06, 2011

Soil fertility should be adjusted prior to planting blueberries, based on the recommendation from a soil test. Once the plants are installed, side-dress at...

What is soil pH, and why is it important?

Gardens & Landscapes Updated: October 03, 2011

pH stands for "potential of Hydrogen" and is a measure of the relationship of hydrogen ions (H+) to hydroxyl ions (OH-). Soil pH is a measure of hydrogen...

What diseases are problematic when planting apple trees in heavy soils?

Apples Updated: August 28, 2011

Heavy soils are those that contain more clay particles relative to sand and silt components. The high clay content causes the soils to be less friable,...

What is the purpose of soil testing?

Gardens & Landscapes Updated: July 07, 2010

What is the difference between a mulch, a soil amendment and an organic fertilizer?

Gardens & Landscapes Updated: June 29, 2010

Many organisms live on decaying wood, so if decaying wood is removed from the forest for energy production, will it negatively impact the native ecology?

Wood Energy Updated: March 12, 2010

The water fraction of an ideal soil makes up what percent of the soil volume?

Updated: November 29, 2007

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This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.