June 23, 2017

Krishna Mohan – Idaho State Commentary – Onion ipmPIPE

Onion ipmPIPE 2013 ID State Commentary 05 Jun

Idaho Commentary

Onion Crop Growth Stage and Status Last Modified: 06/05/13

Onion crop development is normal, mostly 5 to 6 leaf stage. Low levels of thrips infestation. No

significant disease or pest problems. A fee fields show herbicide-related damage.

 

Weather Impacts (temperature, rain, hail, freezing) Last Modified: 06/05/13

Weather conditions are normal for this time of the year.

 

Insect Scouting, Outlook and Management Last Modified: 06/05/13

Thrips

Survey of the four sentinel (observation) plots: Average number of thrips (larvae + adults) per

plant varied between 2 and 7.

Maggots

No surveys or reports at this time

Other

No surveys or reports at this time

 

Disease Scouting, Outlook and Management Last Modified: 06/05/13

Iris yellow spot virus

No symptoms have been observed.

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

No significant problems have been observed.

Fungal Diseases (purple blotch, downy mildew, Botrytis)

No significant problems were observed

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