Plant Disease- Downey Mildew

What is the primary symptom of Downy Mildew?

• Powdery white patches on leaves

• Yellowing of leaves

• Downy, fuzzy growth on the underside of leaves

• Dark spots on stem

Downey Mildew is caused by:

• Bacteria

• Fungi

• Viruses

• Nematodes

Which of the following environmental conditions favors the development of Downy Mildew?

• High humidity and warm temperatures

• Low humidity and cool temperatures

• Drought conditions and extreme heat

• Excessive rainfall and flooding

Which of the following plants is commonly affected by Downy Mildew?

• Tomatoes

• Roses

• Cucumbers

• Carrots

How does Downy Mildew spread from plant to plant?

• Through contaminated soil

• Through infected seeds
  

• Through airborne spores

• Through insect vectors

What is the most effective method for controlling Downy Mildew?

• Pruning affected plant parts

• Applying chemical pesticides

• Increasing air circulation around plants

• Watering plants overhead

Which of the following cultural practices can help prevent Downy Mildew?

• Overcrowding plants

• Watering plants in the evening

• Planting resistant varieties

• Fertilizing plants excessively

What is the long-term impact of severe Downy Mildew infestations on plant health?

• Increased yield and vigor

• Stunted growth and reduced yield

• Enhanced disease resistance

• Improved fruit quality

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

What is the primary difference between Downy Mildew and Powdery Mildew?

• Downy Mildew forms powdery white patches on leaves, while Powdery Mildew forms downy, fuzzy growth on the underside of leaves.

• Downy Mildew is caused by bacteria, while Powdery Mildew is caused by fungi.

• Downy Mildew spreads through airborne spores, while Powdery Mildew spreads through insect vectors.

• Downy Mildew thrives in low humidity conditions, while Powdery Mildew thrives in high humidity conditions.

Which of the following is a crop commonly affected by Downy Mildew?

• Wheat

• Corn

• Grapevines

• Sunflowers

Tags

NGSS.MS-LS2-4