June 23, 2017

Krishna Mohan – Idaho State Commentary – Onion ipmPIPE

Onion ipmPIPE 2012 ID State Commentary 27 Jul

 

Idaho Commentary

 

Onion Crop Growth Stage and Status Last Modified: 07/27/12

Onion crop development is normal, plants mostly in developmental stage 7.

 

Weather Impacts (temperature, rain, hail, freezing) Last Modified: 07/27/12

Weather continues to be generally very hot (several days with maximum temperature around100) and very dry.

 

Insect Scouting, Outlook and Management Last Modified: 07/27/12

Thrips

Survey of the four sentinel (observation) plots: Average number of thrips (larvae + adults) per plant varied between 79 to 188.  Symptoms of significant thrips damage was evident in some fields.

 

Maggots

No surveys or reports at this time

 

Other

No surveys or reports at this time

 

Disease Scouting, Outlook and Management Last Modified: 07/27/12

Iris yellow spot virus

Low level of incidence (1 to 2% plants) of IYSV symptoms were observed in all the four sentinel plots.  Low incidence of IYSV symptoms was observed in a few commercial onion bulb fields.

 

Soil-borne Diseases (Damping Off, Pink Root, Fusarium)

No surveys or reports at this time

 

Fungal Diseases (purple blotch, downy mildew, Botrytis)

No surveys or reports at this time

 

Bacterial Diseases (Xanthomonas, center rot, soft rots)

No surveys or reports at this time

 

 


Onion Pathologist
S. Krishna Mohan
Professor of Plant Pathology
University of Idaho
Email:kmohan@uidaho.edu

 

Speak Your Mind