Explanation:

Only (2)

First statement is incorrect as this disease also affects some orther crops.

Magnaporthe grisea, also known as rice blast fungus, rice rotten neck, rice seedling blight, blast of rice, oval leaf spot of graminea, pitting disease, ryegrass blast, and Johnson spot, is a plant-pathogenic fungus that causes a serious disease affecting rice. Members of the Magnaporthe grisea complex can also infect other agriculturally important cereals including wheat, rye etc.

Second  statement is corrrect 
Rice blast is a significant problem in temperate regions and can be found in areas such as irrigated lowland and upland. Conditions conducive for rice blast include long periods of free moisture where leaf wetness is required for infection and high humidity is common.