Turfgrass
Organic matter is a common component of this upper region of soil that consists of decayed plant material
What is thatch?
This feature of white grubs is commonly used for identification purposes
What is Raster Pattern?
When applied to an actively grown weed, an herbicide is known as this.
What is a post-emergent herbicide?
Diseases need these three parts of the disease triangle to occur.
What is Host, Pathogen, and Environment?
Turfgrasses convert light energy into chemical energy through this process.
What is photosynthesis?
Cynodon dactylon and Cynodon dactylon x. C. transvaalensis are the scientific names for these two species
What are common and hybrid bermudagrass?
What is tunneling?
Between grassy weeds, broadleaf weeds, and sedges, these weeds are the most difficult to selectively control with herbicides.
What are grassy weeds?
The most commonly occurring and sprayed for turfgrass disease.
What is Dollar Spot?
Name three methods for establishing turfgrasses.
Seeding, sodding, sprigging, and plugging
The main mechanism for turfgrass cooling, where water is released through small pores in leaves, or when surface water turns into atmospheric vapor.
What is evapotranspiration?
Larvae undergo pupation in this metamorphosis, while eggs become nymphs in this metamorphosis
What is a complete and incomplete?
A common turfgrass weed with an ocrea.
What is Prostrate Knotweed, Smartweed, or Virginia Butttonweed?
Rhizoctonia solani is the pathogen responsible for causing these two turfgrass diseases.
What are Brown Patch and Large Patch?
Between sandy, silt, and clay soils, which typically have the highest bulk densities?
Sandy soils
In a 35/35/30 Tall fescue/Perennial ryegrass/Kentucky bluegrass seed mixture, which turfgrass species would be in the highest quantity.
Kentucky Bluegrass
Chlorantraniliprole is the active ingredient in this Syngenta insecticide
What is Acelepryn?
White Clover, Black Medic, and Yellow Woodsorrel are known for this type of leaf.
What is trifoliate?
Spring dead spot, take-all patch, and summer patch all infect this portion of turfgrass plants.
Belowground (roots, stolons, and rhizomes)
What is the most common method for determining organic matter content?
LOI (Loss on Ignition)
Cool-season grasses exposed to cold winds in the winter (no snow cover) are susceptible to this type of winterkill?
Desiccation
What are the developmental stages of white grubs, billbugs, armyworms, and many other insect larvae
Instars
Yellow and Purple nutsedge can be distinguished by this leaf feature.
What is leaf tapering? (yellow-slowly tapesr; purple-abruptly tapers)
Name a turfgrass disease that is not caused by a fungus.
Pythium, Bacterial wilt, and others
What is the purpose of the gravel layer in a USGA-specification putting green rootzone?
Create perched water-table, allows for rapid drainage, prevents sand particles from entering drainage tile, allow for upward capillary flow.