Plant Pathology Jeopardy


TURF DISEASES (2-yr. ag-tech students)

Categories: (choose 6): Spray It!, Microscopic Wonders, Diagnosis, Colorful Diseases, Survival Strategies, Environmental Concerns, Sports

SPRAY IT!

$100 Direction most systemic fungicides move.

UP

$200 Most common disease for which fungicide resistance is a problem.

DOLLAR SPOT

$300 Name one sterol inhibitor/DMI fungicide.

several correct answers

$400 Name one disease that requires a penetrant/systemic fungicide.

several correct answers

$500 New fungicide in the strobilurin chemical group.

COMPASS/TRIFLOXYSTROBIN

MICROSCOPIC WONDERS

$100 Structure on the mycelium that tells you the fungus is a Basidiomycete.

CLAMP CONNECTION

$200 Black hair-like setae tell you it’s this disease.

ANTHRACNOSE

$300 Right-angled branching of the mycelium is characteristic of this fungus.

RHIZOCTONIA

$400 Vase-like contained with conidia inside.

PYCNIDIUM

$500 Some important leaf spot diseases are caused by this fungus whose spores germinate only from the 2 tips.

BIPOLARIS

DIAGNOSIS

$100 High nitrogen, hot, humid weather, large patches, smoke ring.

BROWN PATCH

$200 Low nitrogen, compaction, late summer, orange, powdery spores.

RUST

$300 Low nitrogen, warm temperatures, white mycelium.

DOLLAR SPOT

$400 Compacted soil, low nitrogen, tiny black hair-like structures.

ANTHRACNOSE

$500 Hot weather, low mowing heights, compaction, Poa annua.

SUMMER PATCH

COLORFUL DISEASES (choose 5)

$100 This white fungus is common in shady areas.

POWDERY MILDEW

$200 Another name for Fusarium patch.

PINK SNOW MOLD

$200 Common in late summer and fall, this disease is identified by the orange, powdery spores.

RUST

$300 A disease that causes extra greening of the turf.

FAIRY RING

$400 The streaks of black, powdery spores give the disease its name.

STRIPE SMUT

$400 This is not a disease but it may look like one- bright colors, slimy or powdery.

SLIME MOLD

$500 This minor Oomycete disease is common in cool, wet weather.

YELLOW TUFT

SURVIVAL STRATEGIES

$100 This build-up of dead plant material in turf is a great hiding place for pathogens.

THATCH

$200 Survival structures for most tip blight fungi.

FRUITING BODIES (also pycnidia, pseudothecia)

$300 Thick-walled sexual spores of Oomycetes.

PYTHIUM

$400 How Typhula oversummers before growing into new gray snow mold.

SCLEROTIA

$500 How rust spores survive the winter.

THEY DON’T

ENVIRONMENTAL CONCERNS

$100 In wet weather, this fungus is the most common cause of damping-off.

PYTHIUM

$200 A disease that is more severe at high N fertility.

PYTHIUM BLIGHT, BROWN PATCH, LEAF SPOT, ETC.

$300 A disease that is more severe at low N fertility.

RED THREAD, DOLLAR SPOT, ETC.

$400 Type of N fertilizer that may help reduce take-all patch.

AMMONIUM SULFATE

$500 Similar to dollar spot, this disease is mostly found on acid soils in coastal areas.

COPPER SPOT

SPORTS

$100 Since baseball players chew rather than smoke tobacco, we shouldn’t see the smoke ring of this summer disease at (name your local baseball park).

BROWN PATCH

$200 Famous basketball player whose first name is a symptom.

WILT CHAMBERLAIN

$300 Only the best golfers should be allowed to use this fungicide.

EAGLE

$400 Fencers prefer this fungicide.

TOUCHE

$500 This hot weather leaf spot fungus is a favorite of baseball.

CURVULARIA

[Real sports fans - please help contribute better sports-related questions!]

FINAL JEOPARDY QUESTION

What cultural practice will reduce summer patch, anthracnose, dollar spot, and nematodes?

RAISE THE MOWING HEIGHT OR REDUCE COMPACTION


Use your browser's 'BACK' button to return to previous page

Updated: July 7, 2001