Question

Which one of the following proved effective for biological control of nematode disease in plants?

• A. Gliocladium virens
• B. Pseudomonas cepacia
• C. Pisolithus tinctorius
• D. Paecilomyces lilacinus

Answer 1

The correct option is D

Paecilomyces lilacinus

The correct option is D.

Explanation for correct answer

1. A naturally growing fungus that can be found in soils is called Paecilomyces lilacinus.
2. Paecilomyces lilacinus is a pesticide active component used to prevent nematodes that attack plant roots when applied to the soil.

Explanation for incorrect answer

Option A:

1. Liocladium virens is a saprophytic fungus that feeds on a wide variety of fungi.
2. These are effective against Pythium ultimum and Rhizoctonia solani.

Option B:

1. Burkholderia cepacia is another name for Pseudomonas cepacia.
2. It is used to promote crop growth.

Option C:

1. Pisolithus tinctorius is a fungus that looks like an earthball.
2. Its inoculation promotes the growth of plants such as Scots pine.

Final answer:

Paecilomyces lilacinus is proved effective for the biological control of nematode disease in plants