Aerobiology of Alternaria porri and its relation to purple blotch disease in onion

Aerobiology of Alternaria porri and its relation to purple blotch disease in onion

1994

SB339.O5REP-0301

Airborne incidence of conidia of Alternaria porri over purple blotch infected onion crops was recorded using vertical cylinder spore trap. Daily variations in the conidial incidence was related to the initiation and development of purple blotch on onion crops and prevalent weather parameters. Greater number of conidia were noticed in the air during January when the crop was in three leaf stage. Greater conidial catches were preceded by rain and high RH (above 60 percent) on the previous day. First symptoms of purple blotch appeared on 5th day after the detection of A. porri conidia in the air. [AS]

v.24(1):41-45, INDIAN JOURNAL OF MYCOLOGY AND PLANT PATHOLOGY

Research > Published Articles