Question

Which one of the following diseases of rice is not caused by microbe?

• A. Tip burn of paddy
• B. Stem rot of paddy
• C. False smut of paddy
• D. Blast disease of rise

Answer 1

The correct option is A Tip burn of paddy

A. Tip burn of paddy

Tip burn of paddy refers to browning of plant tissues or even yellowing and darkening of veins leading to eventual wilting. It is generally caused due to multiple factors like less oxygen supply, excessive moisture, excessive fertilisers, lack of available nitrogen and presence of undesirable air pollutants.

While stem rot of paddy, false smut of paddy and blast disease of rice all are fungal diseases.