Plant Disease- Phytophthora Root Rot

What is the primary cause of Phytophthora root rot in plants?

• Fungi

• Bacteria

• Viruses

• Oomycetes

Which part of the plant is primarily affected by Phytophthora root rot?

• Leaves

• Stems

• Roots

• Flowers

What are the symptoms of Phytophthora root rot in plants?

• Wilting and yellowing of leaves

• Dark lesions on stems

• Stunted growth and root rot

• White powdery growth on leaves

How does Phytophthora root rot spread in plants?

• Through airborne spores

• Through contaminated soil and water

• Through insect vectors

• Through direct contact with infected plants

Which environmental conditions are conducive to the development of Phytophthora root rot?

• Dry and sunny conditions

• High humidity and waterlogged soil

• Cold temperatures

• Sandy soil

What is the most effective method for managing Phytophthora root rot?

• Pruning affected plant parts

• Applying chemical pesticides

• Improving soil drainage

• Increasing irrigation frequency

Which cultural practice can help prevent the development of Phytophthora root rot?

• Overwatering plants

• Planting in compacted soil

• Avoiding planting susceptible species in affected areas

• Applying excessive fertilizer

What role does soil pH play in the development of Phytophthora root rot?

• High soil pH promotes disease development

• Low soil pH promotes disease development

• Soil pH has no effect on disease development

• Soil pH inhibits the growth of Phytophthora pathogens

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

What impact does Phytophthora root rot have on plant health and productivity?

• It enhances plant growth and productivity

• It causes wilting, stunting, and eventual plant death

• It improves nutrient uptake from the soil

• It increases fruit yield

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

How can Phytophthora root rot disease be prevented in garden plants?

• By planting susceptible species in affected areas

• By maintaining consistently wet soil conditions

• By improving soil drainage and avoiding waterlogged conditions

• By applying excessive irrigation