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| What feeds on dead organic matter and is not a pest? |
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Definition
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| What organism needs a plant for survival, kills it slowly, and has a narrow host range? |
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| What are single strands/filaments or fungi that are made of chitin? |
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Definition
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| What are groups or masses of hyphae called? |
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Definition
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Term
| What are the reproductive units of fungi? |
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Definition
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Term
| Where are spores and groups of spores housed? |
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Definition
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Term
| What is introduction of the pathogen? |
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Definition
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Term
| What are the 4 steps of the simplified growth cycle for fungus? |
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Definition
| Hyphal growth, spore formation, spores, and spore germination |
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Term
| What fungus phyla causes mushrooms and rust? |
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Definition
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Term
| What are fungal-like organisms called? |
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Definition
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Term
| What fungus phyla is sac fungi? |
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Definition
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Term
| Phytophthora, pythium, and downy mildew are caused by what fungus phyla? |
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Definition
| Oomycota (fungal-like organisms) |
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Term
| Rust, smut, and rhizoctonia are part of what fungus phyla? |
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Definition
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Term
| Powdery mildew, botrytis, fusarium, apple scab, dollar spot, and Dutch elm disease are caused by what fungus phyla? |
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Definition
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Term
| What fungus phyla is spread by wind and causes most post-harvest diseases that rot produce? |
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Definition
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Term
| What 2 oomycota cause dampening off? |
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Definition
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Term
| What are some cultural practices that you can do to minimize the spread of fungal diseases? |
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Definition
| Isolate new plants, sterilize everything, soil drainage and proper watering, resistant cultivars or species, sunlight, dehumidify, start with healthy plants, and remove infected plants |
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Term
| What are 7 common foliar fungal diseases in broadleaf herbaceous plants? |
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Definition
| Anthracnose, botrytis, alternaria, septoria, white mold, powdery mildew, and downy mildew |
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Term
| What environment does anthracnose prefer? |
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Definition
| Wet and cool temperatures |
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Definition
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Definition
| Witch's broom caused by anthracnose |
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Term
| What causes rotted fruit with velvety gray mold? |
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Definition
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Definition
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Definition
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Definition
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Term
| What are 3 plants that anthracnose can infect? |
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Definition
| Sycamore, tomatoes, and turf |
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Term
| What are 3 plants that botrytis (gray mold) can infect? |
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Definition
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Term
| T/F: Powdery mildew is usually seen on the tops of leaves. |
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Definition
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Definition
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Definition
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| T/F: Downy mildew is usually seen on the tops of leaves. |
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Definition
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Term
| What are 3 plants that powdery mildew is often found on? |
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Definition
| Cucurbits, monarda, and zinnias |
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Term
| How does anthracnose spread? |
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Definition
| Overwintering on twig tissue with spores, then is transported by water |
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Term
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Definition
| Overwinters in infected plant tissue and can lay dormant in soil for years |
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Term
| How does powdery mildew spread? |
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Definition
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Term
| Which mildew causes symptoms to go through both sides on the leaf? |
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Definition
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Term
| How does downy mildew spread? |
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Definition
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Term
| What 3 things promote infection with botrytis? |
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Definition
| High humidity, moisture, and temperatures 60-80F |
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Term
| What are 4 things that cause powdery mildew to spread? |
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Definition
| Low air circulation, high humidity, low light, and 60-70F |
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Term
| What's the best way to control downy mildew? |
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Definition
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Term
| What are 3 plants that downy mildew can infect? |
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Definition
| Cucurbits, impatiens, and roses |
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Term
| T/F: Root rots are usually easy to cure. |
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Definition
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Term
| Pasteurization, Sterilization, or Fumigation: 212F,kills most viruses and weed seeds |
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Definition
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Term
| Pasteurization, Sterilization, or Fumigation: 140-160F and heats high enough to kill most fungi and bacteria. |
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Definition
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Term
| Pasteurization, Sterilization, or Fumigation: Using methyl bromide |
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Definition
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Term
| What 4 conditions does pythium root rot/blight thrive in? |
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Definition
| Overwatered, poor drainage, excess fertilizer, and low temperatures |
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Term
| What plant pathogen causes wire roots? |
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Definition
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Term
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Definition
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Definition
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Term
| What conditions does phytophthora thrive in? |
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Definition
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Definition
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Term
What pathogen causes a sharp line that demarcates the reddish-brown (diseased)
and white (healthy) portion of the crown? |
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Definition
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Term
| Which pathogen causes brown rot on lower plant stems? |
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Definition
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Term
| What causes brown patch, large patch, leaf and sheath spot, and yellow patch? |
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Definition
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Definition
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Definition
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Definition
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Term
| What is thielaviopsis also called? |
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Definition
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Term
| What are the 3 favorite plants of thielaviopsis? |
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Definition
| Pansy, petunia, and vinca |
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Term
| What 3 soil conditions do thielaviopsis thrive in? |
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Definition
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Term
| What 3 things spread thielaviopsis (black root rot)? |
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Definition
| Infected water/containers, shore flies, and fungus gnats |
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| T/F Fusarium spreads in somewhat cool temperatures. |
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Definition
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Term
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Definition
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Term
| What are 3 plants verticillium often infect? |
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Definition
| Tomatoes, maples, and potatoes |
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Term
| Which wilt causes v-shaped chlorosis and symptoms can occur on only one side of the plant? |
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Definition
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Term
| What are 2 biological methods of fungus control? |
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Definition
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Term
| What is a chemical way to control fungus? |
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Definition
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Term
| What material controls disease if applied before the fungus begins infecting the plant? |
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