Pestalotiopsis Quiz

What are the symptoms of pestalotiopsis infection on rubber trees?

• Yellowing of leaves

• Purple discoloration of the trunk

• Leaf spots, defoliation, and dieback of branches

• Increased growth and productivity

How does pestalotiopsis infection affect the leaves of rubber trees?

• Causes flowers to bloom early

• Stimulates growth of new branches

• Causes leaf spots and defoliation

• Turns leaves yellow and brown

In what ways does pestalotiopsis infection manifest on rubber tree branches?

• Dark brown or black spots

• Purple zigzag pattern

• Bright green stripes

• Yellow polka dots

What are some preventative measures for pestalotiopsis infection on rubber trees?

• Watering the rubber trees frequently

• Not pruning the rubber trees at all

• Using herbicides on the rubber trees

• Proper pruning, avoiding overhead irrigation, and applying fungicides

How does Pestalotiopsis spread from one rubber tree to another?

• Spores carried by wind, rain, or insects

• Spread by human touch

• Through underground roots

• By birds carrying spores

How does the climate in other countries contribute to the spread of diseases in rubber trees?

• Favorable conditions for disease growth and spread

• Excessive use of pesticides in other countries

• High altitude in other countries

• Lack of sunlight in other countries

What are the common methods used in other countries to control diseases in rubber trees?

• Watering infected branches with fertilizer

• Fungicide application, pruning infected branches, and proper sanitation practices

• Applying insecticides to the soil

• Using fire to burn the rubber trees