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Turfgrass Management

In a sentence

This book provides a comprehensive guide to turfgrass science and management, covering plant biology, environmental factors, and cultural practices to establish and sustain high-quality turf.

Turfgrass Management, Sixth Edition, is the essential text for anyone starting a career in turfgrass science or seeking to master the art of maintaining beautiful, functional turf. This book breaks down the complexities of turfgrass systems, from the fundamental biology of grass growth and development to the intricate interplay of atmospheric, soil, and biotic environments. You'll learn the principles behind primary cultural practices like mowing, fertilization, and irrigation, as well as supplementary techniques and effective pest management strategies. Whether you're managing a golf course, athletic field, or lawn, this comprehensive guide will equip you with the scientific knowledge and practical skills to diagnose problems, implement corrective measures, and cultivate resilient, high-quality turf that meets specific objectives and withstands environmental pressures.

The four lenses

  • Science
  • Statistics
  • Systems
  • Strategy

The model

This model outlines how cultural management practices and environmental conditions influence the physiological and structural state of a turfgrass ecosystem, ultimately determining its visual and functional quality.

Turfgrass Selectiondesign lever

The strategic choice of turfgrass species and cultivars based on their genetic traits for adaptation to local climate, soil conditions, intended use, and desired level of maintenance.

Cultural Practicesdesign lever

The set of human interventions applied to the turfgrass system to sustain it at a desired level of quality, including mowing, fertilization, irrigation, cultivation, and pest management.

Environmental Conditionscontextual condition

The set of atmospheric, edaphic (soil), and biotic factors that comprise the natural and modified environment in which the turfgrass grows, including temperature, light, water, soil properties, and traffic.

Turfgrass Vigorpsychological state

The overall health and metabolic activity of the turfgrass plants, manifested as the rate of growth, depth and mass of the root system, and the capacity to recover from injury.

Shoot Densitypsychological state

The number of aerial shoots per unit of surface area, which is a primary component of visual turf quality and competition against weeds.

Carbohydrate Reservespsychological state

The store of nonstructural carbohydrates (e.g., fructosans or starch) in plant storage organs, which provides energy for respiration, regrowth after mowing, and survival during stress periods.

Stress Tolerancepsychological state

The ability of turfgrass to survive and maintain function when exposed to adverse environmental conditions such as heat, cold, drought, salinity, and traffic.

Visual Turf Qualityoutcome metric

The aesthetic characteristics of the turf, which is a composite assessment of its density, texture, uniformity, color, and growth habit.

Functional Turf Qualityoutcome metric

The performance characteristics of the turf related to its intended use, such as its rigidity, elasticity, resiliency, wear resistance, and recuperative capacity.

How they connect

  • cultural practices → influences turfgrass vigor
  • cultural practices → influences shoot density
  • cultural practices → influences carbohydrate reserves
  • environmental conditions − influences stress tolerance
  • turfgrass selection → influences stress tolerance
  • carbohydrate reserves → predicts stress tolerance
  • turfgrass vigor → predicts functional turf quality
  • shoot density → predicts visual turf quality
  • stress tolerance → predicts visual turf quality
  • stress tolerance → predicts functional turf quality

A candidate measure

Turfgrass Management — derived measurement candidates

Turfgrass Selection

Name of species and cultivar; Lot number from seed/sod tag; Documented traits from National Turfgrass Evaluation Program (NTEP) reports

self-report suitability: none

Cultural Practices

Mowing height (mm); Mowing frequency (events/week); N applied (kg/ha/year); Water applied (mm/week); Cultivation events (type, date)

self-report suitability: none

Environmental Conditions

Growing Degree Days (GDD); Soil moisture percentage; Soil bulk density (g/cc); Thatch depth (cm); Traffic events (e.g., rounds of golf)

self-report suitability: none

Turfgrass Vigor

Clipping yield (dry weight g/m^2/day); Root mass density (mg/cm^3); Time to recovery (days); Normalized Difference Vegetation Index (NDVI)

self-report suitability: none

Shoot Density

Shoot count per square centimeter; Visual density rating (1-9 scale)

self-report suitability: none

Carbohydrate Reserves

Total non-structural carbohydrate (TNC) concentration in crown and rhizome tissue (mg/g)

self-report suitability: none

Stress Tolerance

Leaf turgor potential; Electrolyte leakage assay; Percent survival after a controlled stress test; Visual rating of turf quality after a stress period

self-report suitability: none

Visual Turf Quality

Composite visual quality rating (1-9 scale); Color rating (1-9 scale); Percent weed cover

self-report suitability: none

Functional Turf Quality

Ball roll distance (cm or ft) via Stimpmeter; Surface hardness (Gmax) via Clegg Impact Tester; Traction (rotational shear resistance); Resiliency (ball bounce height)

self-report suitability: none

Run the assessment

The story

The reader The reader is an aspiring or practicing turfgrass manager, student, or enthusiast who wants to cultivate and sustain a healthy, high-quality turf for a lawn, golf course, or athletic field.

External problem

The turf under their care is struggling with weeds, diseases, thin patches, and poor stress tolerance, failing to meet quality or performance standards.

Internal problem

They feel frustrated, overwhelmed, and uncertain about how to diagnose problems and what actions to take. They worry about wasting money on ineffective treatments and causing more harm than good.

Philosophical problem

It's just wrong that despite their hard work, their turf isn't thriving. A well-managed turf should be a beautiful, resilient, and functional asset, not a constant source of problems and frustration.

The plan

  1. Understand the fundamentals of turfgrass growth, species, and environmental needs.
  2. Master the primary cultural practices of mowing, fertilization, and irrigation.
  3. Learn to diagnose and solve problems using supplementary practices and integrated pest management.
  4. Integrate all practices into a complete cultural system for your specific type of turf.

Success

  • The reader confidently manages a dense, uniform, and healthy turf that resists stress and pests.
  • They can diagnose problems quickly and apply the correct, most efficient solutions.
  • Their turf is not only beautiful but also provides a safe and high-performing surface for its intended use, whether for recreation, sports, or soil stabilization.

At stake

  • They will continue to struggle with recurring problems like weeds, disease, and poor turf density.
  • They will waste time and resources on guesswork and ineffective treatments.
  • Their turf will remain a source of frustration, never achieving the quality, resilience, or functionality they desire.

Questions this book answers

What defines turf quality and how is it measured?
How do turfgrasses grow, develop, and reproduce?
What are the different species of turfgrass and what are their specific adaptations, requirements, and uses?
How do atmospheric, edaphic (soil), and biotic factors impact turfgrass health and survival?
What are the primary cultural practices (mowing, fertilization, irrigation) and how should they be implemented to sustain turf quality?

Glossary

Turfgrass Selection
The process of choosing specific turfgrass species and cultivars based on their genetic traits, adaptation to climate and site conditions, and desired quality characteristics.
Cultural Practices
The set of human interventions applied to the turfgrass system to sustain it at a desired level of quality, including mowing, fertilization, irrigation, cultivation, and pest management.
Environmental Conditions
The set of atmospheric, edaphic (soil), and biotic factors that comprise the natural and modified environment in which the turfgrass grows, including temperature, light, water, soil properties, and traffic.
Turfgrass Vigor
The overall health and metabolic activity of the turfgrass plants, manifested as the rate of growth, depth and mass of the root system, and the capacity to recover from injury.
Shoot Density
The number of aerial shoots per unit of surface area, which is a primary component of visual turf quality and competition against weeds.
Carbohydrate Reserves
The store of nonstructural carbohydrates (e.g., fructosans or starch) in plant storage organs, which provides energy for respiration, regrowth after mowing, and survival during stress periods.
Stress Tolerance
The ability of turfgrass to survive and maintain function when exposed to adverse environmental conditions such as heat, cold, drought, salinity, and traffic.
Visual Turf Quality
The aesthetic characteristics of the turf, which is a composite assessment of its density, texture, uniformity, color, and growth habit.

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