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 itís 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 DONíT

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 shouldnít 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


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Updated: July 7, 2001