June 23, 2017

Dan Drost – Utah State Commentary – Onion ipmPIPE

Utah Commentary 4-30

 

Utah Commentary

Onion Crop Growth Stage and Status Last Modified: 04/30/13

Onion production occurs in Utah only in Davis, Weber and Box Elder counties. Good field conditions in March ensured that all seeded onions were planted by March 31. Growers with transplants (approx 150 acres) began transplanting in late-April and completed those operations within a week. Field conditions good throughout the late March and early April periods with sufficient moisture to ensure good to excellent emergence. Seed emergence was a bit slow due to colder temperatures but overall stands are considered good to excellent.

Weather Impacts (temperature, rain, hail, freezing) Last Modified: 04/30/13

The northern Utah has been cold and dry during the last two weeks. Less than 1/2 inch rain occurred during the last two weeks. Soils do contain sufficient moisture for early growth. Significant cold and freezing temperatures experienced on Apr 17-19 with lows into mid-20’s. Otherwise temperature conditions about normal with days in 50-60’s and nights in 35-45’s. Some damage noted on cotyledons due to cold.

Insect Scouting, Outlook and Management Last Modified: 04/30/13

Thrips

No surveys or reports at this time

Maggots

No surveys or reports at this time

Other

No surveys or reports at this time

Disease Scouting, Outlook and Management Last Modified: 04/30/13

Iris yellow spot virus

No surveys or reports at this time

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 Specialist Daniel Drost Professor of Horticulture Utah State University Email: dan.drost@usu.edu