Penn State Extension
Penn State Extension
Articles Calibrating Your Fertilizer Spreader
Peter Landschoot, Ph.D.
Spreaders can be calibrated in several ways, but the following methods are relatively simple, fast, and accurate. More
Articles Winterkill of Turfgrasses
Peter Landschoot, Ph.D.
Bitter cold and icy conditions during winter sometimes lead to the death of turfgrasses on golf courses, lawns, and sports turf. More
Articles Evaluation of New Bentgrasses for Golf Course Fairways and Tees
Peter Landschoot, Ph.D.
Choosing the right cultivar or blend of cultivars for your particular situation is important for long-term performance of your fairways and tees. More
Articles Spent Mushroom Substrate as a Soil Amendment in Turf
Peter Landschoot, Ph.D.
If you are trying to improve the quality of turf growing in poor or marginal soils, consider using spent mushroom substrate (SMS) as a soil amendment. More
Articles Postemergence Control of Crabgrass and Other Summer Annual Grasses in Lawns
Peter Landschoot, Ph.D.
During rainy summers, annual grasses can be an unsightly weed problem in many Pennsylvania lawns. More
Articles SDHI Fungicides for Turfgrass Diseases
Peter Landschoot, Ph.D.
As summer approaches, plans are being finalized for disease prevention and control programs. More
Articles Evaluation of Some New Bentgrasses for Putting Greens
Peter Landschoot, Ph.D.
Choosing the right bentgrass cultivar is critical for long-term performance of your putting surfaces. More
News Brown Ring Patch Active in Central PA
05/26/2017
In May, 2017, I received a call from a golf course in central PA about a disease producing yellow circular patches on annual bluegrass greens. More
Articles What is an "Acre Furrow Slice" of Soil?
Peter Landschoot, Ph.D.
Acre furrow slice is a common means of estimating the volume or weight of the surface 6.7 inches of soil in an acre of land. More
Understanding the Phosphonate Products
Peter Landschoot, Ph.D.
Sorting through the different phosphonate product (potassium phosphite, phosphorous acid, fosetyl-Al, etc.) can be difficult. More
Articles Turfgrass Species for Pennsylvania
Peter Landschoot, Ph.D.
Turfgrasses are fine-textured grass species that form a uniform, persistent population of plants and that tolerate traffic and low mowing heights (usually two inches or below). More
Articles Turfgrass Fertilization: A Basic Guide for Professional Turfgrass Managers
Peter Landschoot, Ph.D.
Dollar for dollar, fertilization does more to improve poor-quality turfgrass or to maintain good-quality turfgrass than any other management practice. More
Articles Turfgrass Fertilization Basics
Peter Landschoot, Ph.D.
Dollar for dollar, fertilization does more to improve poor quality turfgrass or maintain good quality turfgrass than any other single management practice. More
Articles Options for Chemical Control of Moss in Putting Greens
Peter Landschoot, Ph.D., Joshua Cook
Silvery thread moss (Bryum argenteum) in putting greens is becoming an all-too-common occurrence on Pennsylvania golf courses. More
Articles Snow Removal from Synthetic In-Filled Systems
Peter Landschoot, Ph.D., Steve LeGros
There are a couple of options that can be used to successfully remove snow depending on the situation. More
Articles Managing Thatch in Lawns
Peter Landschoot, Ph.D.
Thatch can have either beneficial or detrimental effects on turf depending on the amount present. More
Articles Lawn Establishment
Peter Landschoot, Ph.D.
Establishing a new lawn begins with careful planning, knowledge of soil conditions, and an understanding of the environmental and cultural requirements of turfgrasses. More
Articles How to Calculate a Fertilizer Ratio
Peter Landschoot, Ph.D.
What is the fertilizer ratio and how to calculate it. More
Articles How Much Phosphorus and Potassium are Really in Your Fertilizer?
Peter Landschoot, Ph.D.
Calculating P and K in your fertilizer. More
Articles Irrigation Water Quality Guidelines for Turfgrass Sites
Peter Landschoot, Ph.D.
Irrigation water quality is becoming an important issue for managers of golf courses, athletic fields, and institutional grounds in Pennsylvania. More
Articles Factors Affecting Green Speed
Peter Landschoot, Ph.D., Dr. George Hamilton, Dr. Patty Sweeney, Dr. Karl Danneberger
In golf, successfully managed greens are often associated with speed. Speed alone, however, does not symbolize a good or healthy golf green. More
Articles Evaluation of Spent Mushroom Substrate as a Topdressing to Established Turf
Peter Landschoot, Ph.D.
Is mushroom substrate a good option as a topdress fertilizer? More
Articles Athletic Fields - Specification outline, construction, and maintenance
Peter Landschoot, Ph.D., John C. Harper II
Drainage patterns for some of the more important types of fields, specification guidelines for their construction, and management practices as they apply to PA and areas with similar climates. More
Articles Calculations Used to Determine the Amount of Fertilizer Needed to Treat Turf
Peter Landschoot, Ph.D.
A fundamental problem in turfgrass fertilization involves determining how much fertilizer is needed to supply a specified amount of nitrogen (or any other nutrient) per 1000 sq ft. More
Articles How Much Soil Phosphorus is in Pennsylvania’s Lawns?
Peter Landschoot, Ph.D., John Spargo
Indiscriminate use of phosphorus-containing fertilizer on runoff-prone turfgrass sites is thought to contribute to contamination of ground and surface water. More