Pesticide Exam (Turf)
Cultural Factors for Good Turf Density - ✔✔ correct answer High quality , weed-free sod; choose
turf that adapt well to MD environmental conditions, anticipated use and management level;
send soil sample to lab and correct soil PH, phosphorus and potassium issues; apply
recommended nitrogen at proper time for turf type; mow at recommended height; irrigate
thoroughly when needed.
Why are weeds present even after good management practices? - ✔✔ correct answer Excessive
wear of an area, extreme environmental conditions, thatch build-up and/or inappropriate
varieties. At which time herbicides may be needed.
Perennial Grass - ✔✔ correct answer Lives more than two years. Spreads by solons, rhizomes
and seed. Most effective control is usually prevention. Usually, there is no selective chemical is
usually available to kill these.
Quackgrass - ✔✔ correct answer Blue-green, course-textured, cool season rhizomatous
Perennial grass. Spreads vigorously in turf grass stands. Poor summer performance. Open (not
dense) formation. Little can be done through management to reduce spread.
Quackgrass Control - ✔✔ correct answer Most effective control is prevention by applying
topsoil free of perennial grass weeds, or use of sterilized/fumigated topsoil; vital during turf
establishment. Selective herbicides are unavailable , must use non-selective herbicides for
control. Mow 48 hours before or after treatment. Apply when actively growing, when soil
moisture is adequate w/ no rain forecast for 24 hours.
Annual Grasses - ✔✔ correct answer Germinate, grow, produce seed, and die within the same
year. Two approaches can be used in chemical control; preemergence herbicides and
postemergence herbicides.
Crabgrass - ✔✔ correct answer Yellow-green to green, course-textured, bunch-type grass (roots
at nodes). Seed germinates mid-Spring when temperatures reach 70 degrees for 7-10 days.
Grows rapidly late Spring-Summer. Seed heads develop until first frost in Fall.
Cultural Factors for Good Turf Density - ✔✔ correct answer High quality , weed-free sod; choose
turf that adapt well to MD environmental conditions, anticipated use and management level;
send soil sample to lab and correct soil PH, phosphorus and potassium issues; apply
recommended nitrogen at proper time for turf type; mow at recommended height; irrigate
thoroughly when needed.
Why are weeds present even after good management practices? - ✔✔ correct answer Excessive
wear of an area, extreme environmental conditions, thatch build-up and/or inappropriate
varieties. At which time herbicides may be needed.
Perennial Grass - ✔✔ correct answer Lives more than two years. Spreads by solons, rhizomes
and seed. Most effective control is usually prevention. Usually, there is no selective chemical is
usually available to kill these.
Quackgrass - ✔✔ correct answer Blue-green, course-textured, cool season rhizomatous
Perennial grass. Spreads vigorously in turf grass stands. Poor summer performance. Open (not
dense) formation. Little can be done through management to reduce spread.
Quackgrass Control - ✔✔ correct answer Most effective control is prevention by applying
topsoil free of perennial grass weeds, or use of sterilized/fumigated topsoil; vital during turf
establishment. Selective herbicides are unavailable , must use non-selective herbicides for
control. Mow 48 hours before or after treatment. Apply when actively growing, when soil
moisture is adequate w/ no rain forecast for 24 hours.
Annual Grasses - ✔✔ correct answer Germinate, grow, produce seed, and die within the same
year. Two approaches can be used in chemical control; preemergence herbicides and
postemergence herbicides.
Crabgrass - ✔✔ correct answer Yellow-green to green, course-textured, bunch-type grass (roots
at nodes). Seed germinates mid-Spring when temperatures reach 70 degrees for 7-10 days.
Grows rapidly late Spring-Summer. Seed heads develop until first frost in Fall.
